Top 10 AA, AAA, C, D, & 9V Battery Chargers & Batteries In 2020


Part 4 of 14 - Solar Powered Prepping Series - What You Can Maintain With Foldable Solar Panels & Solar Generators

Best Battery Chargers & Rechargeable Batteries That Use Common Battery Sizes


Top 10 AA, AAA, C, D & 9V Battery Chargers & Batteries In 2020


This article is part 4 of 14 in our series that cumulatively includes details on the vast amount of battery powered capabilities anyone can easily maintain for many years after a Doomsday event.  

Overview - Best Rechargeable Batteries & Chargers

In this article, we have researched and picked out the best AA, AAA, C, D, & 9V battery chargers & rechargeable batteries that you can keep charging almost indefinitely with no available commercial AC power.

The solution we describe in part 1 of our Solar Powered Prepping Series is to use a 60W to 120W foldable solar panel to keep a small LiFePO4 power station charged up to 2000 times (over many years).  Then just use a fraction of that power station's capacity to keep charging small rechargeable batteries over and over again using battery chargers as described in this article up to 2100 times per battery.  

With several battery chargers and plenty of small batteries, you can keep small battery operated devices running for many years.  If you really want to be prepared for any potential long term loss of commercial power caused by a catastrophic event on the nation's power grid, then do not overlook this capability.  

If you are concerned about an EMP (electromagnetic pulse event), your power stations, battery chargers and critical devices can be stored in faraday bags to protect them.

A Small Power Station Can Power Multiple Battery Chargers Simultaneously

Beaudens 150W Power Station Powering 4 Battery Chargers Simultaneously

Rechargeable Batteries & Chargers - Criteria

For small common batteries such as AAs & AAAs, we still recommend NiMH Rechargeable Batteries more than lithium-ion batteries when possible. NiMH batteries are still more cost effective, plus the current number of recharges for Eneloop batteries (2100 recharges) plus over 10 year battery life is out of this world amazing!  

In comparison, the typical estimated life of a Lithium-ion rechargeable battery is about two to three years or 300 to 500 charge cycles, whichever occurs first.

The standard Eneloop NiMH AA & AAA batteries are Low Self Discharge (LSD) type and maintain 70% of their full charge after 10 years of non-use, plus they can be recharged many more times than other battery types and that is what makes them currently the best choice.  

To get the longest longevity and best bang for your buck, with C & D cell batteries we recommend that you use C & D cell spacers/adapters that convert AA batteries into use as a C or D cell battery, and then continue to use your AA rechargeable batteries in the adapters.  

For 9V batteries, Lithium-ion rechargeable batteries are the best choice as the longevity is as good or better than NiMH plus the battery mAh (milliamp hours of battery capacity) are about 3 times more.


Panasonic Eneloop AA Batteries Have 2100 Cycles And Are Low Self Discharge Maintaining 70% Charge After 10 Years Of Non Use

Panasonic BK-3MCCA12FA Eneloop AA Batteries Have 2100 Cycles And Are Low Self Discharge Maintaining 70% Charge After 10 Years Of Non Use

Important Battery Charger Criteria:

  • Individual battery charging: We recommend battery chargers that charge each battery individually.  If you use a battery charger that charges batteries in sets of 2 or 4, that means the batteries that reach a full charge 1st will continue to receive charging current until the last battery is charged and that is not good for the health of those batteries.
  • Battery Charge Indicator: We recommend that the battery charger have some kind of visual indicator for batteries being charged and when they are fully charged.
  • Automatic shutoff: If you do not get a battery charger with an auto shutoff capability, then you will have to keep an eye on the battery charger to disconnect it from power when the batteries reach full charge versus automatically powering off to protect your batteries.
  • Max number of batteries that can be charged simultaneously: Four batteries at a time is typically a good number, but you might at least one charger that can charge more batteries (8, 12, or 16) at a time.  Remembering the military term "Two is one and one is none", it is always wise to have more than one battery charger as a backup.  If you need to charge more than 4 batteries at a time, one option is to just pull out one or more of your backup chargers.  Or if you desire, purchase larger chargers that can charge 8 or more batteries at a time.

  • Built In Protections:  Look for as much protection as possible such as auto shut off protection from over charging, reverse polarity, short circuit, over-voltage, over-current, over-heat and non-rechargeable batteries.
  • Good reputation: A high number of very good user reviews and high ratings are important, especially if you do not recognize the company or brand.

Considering these criteria, we picked out the best battery chargers that are available.


A Good Battery Charger Will Have Significant Built In Protections

The EBL Smart Battery Charger Stops Charging Automatically With Any Improper Condition

Top 10 Rechargeable Batteries, Chargers & Accessories

1. Best AA & AAA NiMH Batteries - Standard Panasonic Eneloop (White) Batteries

Remember that Low Self Discharge NiMH easily beats Lithium-ion in AA & AAA number of recycles, so if you easily want the best longevity for your AAs and AAAs and you want to save the most money, then stick with the standard Eneloop batteries and hold off on rechargeable Lithium AA and AAA batteries.

What really stands out about the standard Eneloop AA & AAA (white) NiMH batteries is that they will outlast all other brands and types by a long shot.  Each fully charged Eneloop battery lasts about the same as an Alkaline battery and can be recharged up to an amazing 2100 times!  

You will save so much money using these, since 1 AA or 1 AAA Eneloop battery equals as many as perhaps 2100 of their Alkaline battery equivalents.  In comparison, the Duracell 2450 AA Rechargeable battery is a top rated battery but it can only be recharged up to 400 times.

We also really like that these Eneloop batteries are Low Self Discharge (LSD) types, meaning you can charge them fully, put them on a shelf, and 10 years later they will still have 70% of the original charge.  After 1 year they still have 90% charge, after 3 years 80%, 5 years 75%, and 10 years 70%.  That is amazing.

Note:  As an alternative, you can pay for the higher cost Eneloop Pro (black) LSD NiMH batteries.  They last longer per charge than standard Eneloop (white) batteries but they only have up to 500 recharges.  This means the Eneloop Pros have significantly less longevity in the number of recharges and years of use, plus they do not maintain their charge as long as they only have 85% capacity of full charge after 1 year of non-use.

AA & AAA Eneloop (White) Batteries Are The Best Available Rechargeable Small Batteries

AA & AAA Eneloop Batteries Plus C & D Eneloop Spacers Are The Best Rechargeable Small Batteries That You Can Buy With 2100 Recharges And Long Lasting Battery Power


AA Eneloop Batteries Can Also Double As C & D Cell Batteries With Eneloop Spacers/Adapters 
Make Your Own C or D Rechargeable Batteries With Eneloop C and D Battery Spacers

Pros:
- No other small battery comes close to the standard Eneloops for longevity.
- Each AA and AAA Eneloop battery (per charge) lasts about the same as an Alkaline battery. With 2100 recharges for each Eneloop battery, its a no brainer to only use Eneloop batteries for AA and AAA battery devices.
- Low Self Discharge (LSD) technology - fully charged batteries still have 70% of their battery charge after 10 years of non use.
- If you purchase the Eneloop C & D Spacers, you can fill all of your C & D cell battery needs by simply installing AA Eneloop batteries inside the spacers. You may have to change the C or D cell more often, but you can do that up to 2100 times per battery so the savings and availability of always having a working battery are extensive.
Note: See our pick #9 below for the DSLRKIT 3AA to D Size Battery Adapter. With this enhanced D cell adapter, you can use 1, 2, or 3 AA Eneloop batteries in parallel to gain more battery capacity (battery run time) as desired.
Cons:
- None
Check Current Prices & Availability:

1. Amazon carries AA & AAA Eneloop batteries.

Eneloop Rechargeable Batteries and Battery Adapters - Great Stuff!

Eneloop Rechargeable Batteries and Battery Adapters - Great Stuff!

2. Best AA & AAA NiMH Battery Charger - Panasonic Eneloop BQ-CC55 Individual Battery 3 Hour Quick Charger 

The BQ-CC55 battery charger will simultaneously charge any combination of 1, 2, 3 or 4 AA or AAA batteries and you can mix and match AA & AAA batteries.  Charge any combination of four AA or AAA eneloop (white) batteries in up to 3 hours, or up to 4 hours if you are using 4AA or 4AAA eneloop pro (black) batteries.  

The BQ-CC55 quick charger is a high quality, reliable and durable battery charger.  We really appreciate that this charger is just simple to use, and it works well and fast.  Just plug in any combination of AA & AAA batteries into the BQ-CC55 and the batteries charge independently of each other going through red, yellow, green and off LED status.  

Each charger battery port cuts off automatically when the battery is fully charged.  Built in battery sensing technology protects from over charging, short circuit, over-voltage, over-heating, and will automatically stop the charging process if a non-rechargeable battery is inserted into the unit.

This charger can't get any simpler, quicker, more reliable or a better match for Eneloop batteries.  The feedback for this charger on Amazon is 4.5 stars for well over 15,000 reviews, making this a proven quality charger that has been on the market several years.  

We have two of these (pictured below) and they are working perfectly since we purchased them in early 2020.  There are higher cost AA & AAA chargers with more features like our #4 pick (the La Crosse Technology BC1000 Alpha Power Battery Charger) or #5 pick (the EBL Smart Battery Charger) if you desire their extra capabilities and features.

Mix And Match AA & AAA Eneloop Batteries In The Panasonic Eneloop BQ-CC55 Quick Charger

Mix And Match AA & AAA Eneloop Batteries And Single Charge Them In The Panasonic Eneloop BQ-CC55 Quick Charger

The Panasonic BQ-CC55 3 Hour Quick Charger Has LED Charging Status Lights For Each Port

The Panasonic Eneloop BQ-CC55 3 Hour Quick Charger Has LED Charging Status Lights That Are Independent For Each Battery Charging Port

Pros:

- High quality AA & AAA battery charger that is extremely easy to use.
- You can charge between 1 and 4 batteries simultaneously and they all charge independently.
- Advanced individual quick battery charging technology
- Charge 4AA or 4AAA Eneloop (white) batteries in up to 3 hours or 2AA or 2AAA Eneloop (white) batteries in up to 1.5 hours.
- Charge 4AA or 4AAA Eneloop Pro (black) batteries in up to 4 hours or 2AA or 2AAA Eneloop Pro (black) batteries in up to 2 hours.
- LED status lights for each battery. Red 0%-20%, Orange 20%-80%, Green 80-100%. Once a battery is completely charged, the corresponding LED turns off.
- Advanced protection from over charging, short circuit, over-voltage, over-heating, and will automatically stop the charging process if a non-rechargeable battery is inserted into the unit.
- Individual auto shutoff automatically stops charging for each battery when it is fully charged.
- Works with standard 110V AC or any AC voltage between 100V to 240V
- Ultra-convenient retractable AC plug, for direct connection to an AC wall outlet

Cons:
There is no discharge capability (to eliminate memory effect), but it is not needed with NiMH batteries such as Eneloop batteries.
Check Current Prices & Availability:

1. Amazon carries the Panasonic Eneloop BQ-CC55 Quick Charger.


Panasonic Eneloop Chargers BQ-CC55, BQ-CC17

Compare Three Generations of Panasonic Eneloop Chargers BQ-CC55, BQ-CC17

3. Best USB AA & AAA Battery Charger - EBL U421 iQuick Charger 

The EBL U421 iQuick Charger is a reliable and fast AA & AAA battery charger with all of the most important features of a small battery charger, plus it can be powered from any USB port on a computer, power bank, power station, or solar panel.  It can also be powered from any standard AC to USB 5V 2A power adapter that you may already have several on hand.

For anyone who has a solar panel and power station, the EBL U421 iQuick Charger is arguably the #1 pick for a USB powered AA & AAA powered battery charger as it is more efficient to power the battery charger from a power station or power bank using its USB charging port than it is to power a battery charger from an AC power outlet.  

Also, this charger is inexpensive enough that from a prepper's viewpoint, it makes more sense to have several of these EBL U421 chargers on hand than it would having fewer more advanced chargers for the same cost.

The EBL U421 iQuick Charger Is The Best USB Powered Smart Charger For AA And AAA Batteries

The EBL U421 iQuick Charger Is The Best USB Powered Smart Charger For AA And AAA Batteries


EBL U421 iQuick Charger Being Powered By An Energizer 150W Power Station

EBL U421 iQuick Charger Being Powered By Energizer 150W Power Station

Noteworthy Amazon Feedback:
The EBL U421 iQuick Charger has great feedback on Amazon averaging 4.5 stars. The particular feedback and picture below say a lot about the reliability and durability of this charger.
"Still works after being outside a few months. Works well does what it says very handy. Use this thing outdoors for months in the fog rain snow and heat. Still working after being soaked over night let dry and works again and very high humidity may show batteries as charging or defective with nothing in the slots but as soon as the unit is dry works again."

The EBL U421 iQuick Charger "Still Works After Being Outside A Few Months"

 The EBL U421 iQuick Charger Still Works After Being Outside A Few Months

Pros:
- Low cost, high quality, reliable AA & AAA USB powered battery charger includes micro USB charging cable.
- Independent battery charging of any combination of 1, 2, 3 or 4 AA & AAA NiMH batteries.
- Fast Charging Technology: 40min iQuick charging speed for 1 battery or 2.5 hours to charge 4 fully depleted batteries.
- USB design provides more choices for charging (power bank, power station, computer, solar panel, or AC to USB adapter).
- Trickle charging mode maximizes the capacity of rechargeable batteries.
- Advanced protection from over charging, reverse polarity, short circuit, over-voltage, over-current and over-heat.
- Individual auto shutoff automatically stops charging for each battery when it is fully charged.
- Individual battery charging status LED Indicator: The 4 LED Indicators not only can show each battery's charging status but also indicates a bad/reversed/incompatible battery. Note: Green flashing means charging; Green means fully charged; Red flashing means the battery is incompatible, bad, or reversed.

Cons:
 None
Check Current Prices & Availability:

1. Amazon carries the EBL U421 iQuick Charger 

Review Of EBL iQuick USB Charger for AA and AAA Ni-MH Batteries

EBL iQuick USB Charger for AA and AAA Ni-MH Batteries

4. Best More Advanced AA & AAA Battery Charger - La Crosse Technology BC1000 Alpha Power Battery Charger

If you want a more advanced AA & AAA battery charger with more control over the charging process, the La Crosse BC1000 is a really nice charger.  You can adjust the charge rate of any of the 4 battery ports to 200, 500, or 700 mA, or to 1A for slower to faster charging rates as you desire.  Plus you can do the same to discharge batteries at different rates.  

You can change the display for each individual battery port from charging current (mA), discharging current (mA), battery voltage (V), elapsed charging time (Hours:Minutes), accumulated battery capacity (mAh or Ah).

La Crosse Technology BC1000 Alpha Power Battery Charger

The Best AA And AAA Advanced Battery Charger Is The La Crosse Technology BC1000 Alpha Power Battery Charger


The La Crosse Technology BC1000 Alpha Power Battery Charger Has Many LCD Display Modes To Choose From

Pros:
- Once you learn how to use this charger (pretty easy to learn), you can be an expert at maximizing the longevity of every battery with discharges and slow charging as an example.
- Simultaneously and independently charges multiple AA or AAA batteries, and each battery port can be set to different charging currents: charge, discharge, refresh, and test.
- LCD shows capacity for each battery when charging is complete
- Charges aa and aaa rechargeable batteries simultaneously - Automatically switches to trickle charge when charging is complete to ensure maximum battery capacity - Overheat detection to protect over-charging - Works with all nicd and nimh "AA" and "AAA" rechargeable batteries
Cons:
- More expensive than the Panasonic Eneloop BQ-CC55 and EBL U421 USB charger, but the La Crosse BC1000 has more features. For, the money and simplicity it may be more practical to just buy the less expensive, less advanced chargers and use the money saved to buy more Eneloop batteries.
- Complex to use compared to the Eneloop and EBL chargers. Example: You have 5 seconds to select the charging current after popping in a battery or it defaults to the lowest charging current.
- The included La Crosse rechargeable batteries are not nearly as good as the Eneloops, so just plan on replacing the batteries. The charger is fantastic, so just use Eneloop batteries with this charger and you'll have a great setup.
Check Current Prices & Availability:

1. Amazon carries the La Crosse Technology BC1000 Alpha Power Battery Charger

La Crosse Technology Premium AA/AAA Battery Charger/Analyzer/Conditioner Review

La Crosse Technology Premium AA/AAA Battery Charger/Analyzer/Conditioner Review

5. Most Versatile Small Battery Charger - EBL 906 Universal LCD Smart Battery Charger

The EBL 906 Smart Battery Charger is relatively inexpensive with all of the desired capabilities and adds the flexibility to charge AA, AAA plus C, D & 9V NiCD batteries.  There are 4 slots to charge AA, AAA, C, and D cells, plus 2 9V slots.  

All slots charge independently and quickly, with a nice bright display, auto-off when charging completes, and the charger has a one button discharge function.  The charger uses an AC power cord and protects against over charge, over current, over voltage, over heating, short circuit, and non rechargeable batteries.

The EBL 906 Smart Battery Charger Charges C D AA AAA 9V Ni-MH Ni-CD Rechargeable Batteries And Has A Discharge Function

The EBL Smart Battery Charger Charges C D AA AAA 9V Ni-MH Ni-CD Rechargeable Batteries And Has A Discharge Function

The EBL Smart Battery Charger Charges 1 to 6 Batteries Simultaneously

Pros:
- Can charge 1 to 4 AA, AAA, C, or D plus 1 to 2 9V NiMH/NiCD rechargeable batteries.
- The charging slots are independently charged and you can freely mix and match different size batteries.
- One button discharge function. Simply deress the blue button to discharge the battery. LCD displays "DISCHG". The charger will resume charging mode after completion of discharge. - Fast Charging Less than 3 hours to fully charge 2 to 4 AA/AAA/C/D batteries, and less than 10 hours to fully charge 9V batteries. - Has protection against over charge, over current, over voltage, over heating, short circuit, and non rechargeable batteries. - Constant current charging mode protects the batteries against current fluctuation.
Cons:
 None
Check Current Prices & Availability:

1. Amazon carries the EBL 906 Smart Battery Charger

EBL 906 Universal LCD Display Battery Charger for AA, AAA, C, D Ni-MH Ni-CD Rechargeable Batteries

EBL Universal LCD Display Battery Charger for AA, AAA, C, D Ni-MH Ni-CD Rechargeable Batteries

6. Best Multi Bay AA, AAA & 9V Battery Charger - BONAI 16+2 Bay Smart Battery Charger

The BONAI 16+2 Bay Smart Battery Charger can charge 1 to 16 AA & AAA NiMH or NiCD batteries and 1 or 2 9V NiMH, NiCD or Li-ion rechargeable batteries simultaneously.  If you have a whole lot of rechargeable batteries that you frequently need to power up, this can be a handy option.  You also do not have to worry about the battery technology (NiMH, NiCD, or Li-Ion).

Each of the 18 battery slots charge independently plus the each battery's charge status of each is displayed on the wide LCD screen. A defective battery displays as a blank battery (with no bars) in the LCD.  This charger protects against overcharging, overheating, over voltage, over current, reverse polarity, short circuits, and defective or non-rechargeable batteries. 

This charger makes it fast and easy to charge a lot of batteries at once.  You simply put them in the charger and the charger will auto cut off for each battery as it becomes fully charged as shown in the YouTube below.  There’s no discharge function to refresh your batteries, but for charging a lot of batteries at once, the Bonai 16+2 Bay charger has room to spare. 

The BONAI 16+2 Bay Smart Battery Charger Can Charge Up To 16 AA & AAA Plus 2 9V NiMH, NiCD, Or Lithium LI-Ion Batteries Simultaneously

The BONAI 16+2 Bay Smart Battery Charger Can Charge Up To 16 AA & AAA Plus 2 9V NiMH, NiCD, Or Lithium LI-Ion Batteries Simultaneously


The BONAI 16+2 Bay Smart Battery Charger Protects Against Over-Charge, Over-Heat, Short Circuit, Over Voltage, Over Current, And Reverse Polarity

Pros:
- Fast charging for many batteries charging simultaneously. Typical charge times are listed as four to six hours for 1 to 16 AAs, or 1.5 to 3 hours for 1 to 16 AAAs.
- Suitable for any brand of AA, AAA, and 9V rechargeable batteries
- Freely charge any mix of 1 to 16 AA & AAA NiMH or NiCD batteries and 1 or 2 9V NiMH, NiCD or Li-ion rechargeable batteries.
- All batteries charge simultaneously and independently of each other.
- Designed with an easy-to-read LCD screen to view each battery's charging status.
- Protects against overcharging, overheating, over voltage, over current, reverse polarity, short circuits, and defective or non-rechargeable batteries.
Cons:
- Minor complaint: Battery slot position "raised white" numbering in the white plastic body of the charger could have been made easier to read with black numbers instead of just raised white numbers. You can see the slot numbers when you look more closely.
Check Current Prices & Availability:

1. Amazon carries the BONAI 16+2 Bay Smart Battery Charger


Review of the BONAI 16+2 Bay Smart Rechargeable Battery Charger

Review of the BONAI 16+2 Bay Smart Rechargeable Battery Charger AA and AAA model VIP-ZN1680C

7. Best 9V Rechargeable Batteries - EBL 9 Volt Rechargeable 600mAh Li-ion Batteries (4-Packs)

The EBL 9V rechargeable 600 mAh batteries are the best value in our opinion.  Their low initial cost plus the fact they can be recharged up to 1200 times makes them very affordable.  

EBL builds a high amount of protection and quality in their batteries which makes them reliable and durable.  These batteries automatically protect against over charge, over discharge, high temperature, short circuit, over Voltage and over current.

These batteries have a low discharge rate in low power using devices.  This makes the EBL 9Volt batteries perfect for smoke detectors. With low use, these batteries can last years between charges.

The EBL 9V Rechargeable Lithium Ion 600mAh Batteries Are The Best

The EBL 9 Volt Rechargeable Lithium Ion 600mAh Batteries Are The Best 9V Li-ion Battery Available And Come In 4-Packs Or 6-Packs


The EBL 9 Volt Rechargeable Lithium Ion 600mAh Batteries Protect Against Overcharge, Overdischarge, High Temperature, Short Circuit, Over Voltage And Over Current

Pros:
- Batteries come pre-charged with no memory effect.
- Improved low self discharge - These batteries will maintain 75% of capacity after 3 years of non-use.
- Batteries can be recharged up to 1200 times.
- Rugged battery with interior safeguards against overcharging and power surges.
- Can be used with any brand 9V Li-ion Enabled chargers.

Cons:
- None
Check Current Prices & Availability:

1. Amazon carries the EBL 9 Volt Rechargeable 600mAh Li-ion Batteries

NOTE:  The YouTube video for the EBL 5 Bay 9V Battery Charger below in our #7 pick also reviews the EBL 9V 600 mAh Li-ion batteries.

8. Best 9V Rechargeable Battery Charger - EBL Lithium Ion 5 Bay 9V Battery Charger 

The EBL Lithium Ion 5 Bay 9V Battery Charger is relatively inexpensive with all of the important charger criteria and will charge between 1 and 5 9V Lithium Ion batteries simultaneously.  All slots charge independently and quickly (typically in about 2 hours or more), with a handy LED charging status light (red = charging, and green = fully charged).  

There is an automatic cutoff when charging completes.  The charger protects against over charge, over current, over voltage, and over heating.  We really like that it can be powered from any USB port on a computer, power bank, power station, or solar panel.  

This charger can also be powered from any standard AC to USB 5V 2A power adapter that you may already have several on hand.  This charger has really good 4.5 star feedback on Amazon and there are a lot of reviews.

The EBL Lithium Ion 5 Bay 9 Volt Battery Quick Smart Charger Comes With 5 Batteries, Battery Case And USB Charging Cable
The EBL Lithium Ion 5 Bay 9 Volt Battery Quick Smart Charger Comes With 5 9V Batteries, Battery Case, And 2A 5V USB Charging Cable

The EBL Lithium Ion 5 Bay 9 Volt Battery Charger Being Powered Using A Beaudens 150W Power Station

The EBL Lithium Ion 5 Bay 9 Volt Battery Quick Smart Charger Being Charged Via USB Cable Using A Beaudens 150W Power Station

Pros:
- Low cost, high quality, reliable 5 Bay 9 Volt USB powered battery charger includes micro USB charging cable.
- Independent battery charging of any combination of 1, 2, 3, 4 or 5 9V Li-ion rechargeable batteries.
- USB design provides more choices for charging (power bank, power station, computer, solar panel, or AC to USB adapter).
- Trickle charging mode maximizes the capacity of rechargeable batteries.
- Advanced protection from over charging, over-voltage, over-current and over-heat.
- Individual auto shutoff automatically stops charging for each battery when it is fully charged.
- Individual battery charging status LED Indicator: The 5 LED lights show each battery's charging status. Note: Red means charging; Green means fully charged.
- Comes with a battery storage case.

Cons:
 You may have to push just a little hard to seat each battery into the 9V connector on the battery charger, but that is the same issue pretty much for any 9V charger.
Check Current Prices & Availability:

1. Amazon carries the EBL Lithium Ion 5 Bay 9V Battery Charger

EBL 9V Rechargeable Battery & 5 Bay Charger Review

EBL Li-Ion 9v Rechargeable Battery And 5 Bay Charger Review

9. Best D Cell Battery Adapter - DSLRKIT 3AA to D Size Battery Adapter

The DSLRKIT AA to D-cell battery adapters are inexpensive and can be purchased in a 4-pack or 12-pack.  You can use any kind of AA batteries in them (alkaline, lithium Ion, or rechargeable AA batteries of any brand).  

We recommend that you use the exact same batteries (brand and type) and with the same charge.  Obviously the best batteries to save the most money, plus to last the longest in long term Doomsday survival situations are the standard AA Eneloop batteries (our #1 pick above).

These D-cell battery adapters are solid in construction and since all of the battery slots are wired in parallel, you can create a D-cell battery by installing just one AA battery.  You have the option to install a 2nd AA battery to get twice the battery capacity (and twice the run time on your device) or you can install 3 AA batteries to triple your device's run time compared to just using 1 AA per D-cell battery adapter.



The DSLRKIT Parallel Battery Adapter Is The Best Converter Of 1, 2 or 3 AA Batteries To A D Cell Size Battery

The DSLRKIT Parallel Battery Adapter Is The Best Converter Of 1AA, 2AA, or 3AA Batteries To A D Cell Size Battery

Modification Needed For Each AA to D-cell Adapter

The only complaint we have about this adapter is that without a simple modification, the AA batteries are very hard to remove if all 3 AA batteries are installed.  You can push them in usually without much of an issue, but removing the batteries can be a pain if all 3 AAs were installed.  With the modification made, you can have a set of really cool, easy to use cost-saving D-cell batteries (composed of three AA Eneloop batteries)

With all 3 AA batteries installed, it can be very difficult to get the 1st battery out as there is barely anything to "grab" on the top or bottom of the battery.  Once one of the batteries is out, you can push the 2nd and 3rd batteries out through one of the other slot openings with no problem.  

Don't let this discourage you as this adapter is solid and works great with a simple modification.  You can always just only use 2 AA batteries (instead of all 3) if you do not want to make the modification.  Once one battery is out, the other two are very easy to push out.

Just read the Amazon feedback and you can see where some people are slightly modifying each adapter by shaving off, filing or using a Dremel tool to grind one small crescent shaped moon at the top edge for taking out the first battery.  We did make this modification on 8 of the 12 battery adapters that we received so that you can see what the modification looks like.  

The 4 adapters in the middle of the picture below were not modified (yet), so you can see the white plastic top outer edge is uniform all the way around.  For each of the 8 adapters shown below in the outer ring, using our Dremel Tool we made 1 small half moon cutout (at the top of 1 AA battery slot) facing the center of the picture.  One of these half moon notches has a red arrow pointing right at the cutout.

Although you could use a small round file, saw or knife, a Dremel Tool with a small pointed stone bit did the job very fast.  For each AA to D-cell adapter, all that you need to do is notch out a half moon cutout at the top (positive end) only in one of the 3 AA battery slots as shown in the picture below.  On a couple of these we cut all the way to the metal contact but that does not cause any issue as the white plastic adapter is so strong and sturdy, it will not fall apart even if you cut or grind all the way to the metal.

AA to D-cell Adapter Modification Using Dremel Tool To Make 3 AA Batteries Removal Much Easier

AA to D-cell Adapters Modification Using Dremel Tool To Make AA Battery Removal Much Easier


Modified D-cell Adapter With 3 AA Eneloop Batteries Installed Will Make The 1st AA Battery Removal Much Easier

Pros:
- Solid construction.
- Convert any AA battery to a D-cell battery
- Option to use 1 AA, 2 AAs or 3 AAs for more battery capacity
Cons:
- A modification is required to make it easier to get the 1st of 3 AA batteries out (see above description of the modification).
Check Current Prices & Availability:

1. Amazon carries the DSLRKIT 3AA to D Size Battery Adapter (Pack of 12) or (Pack of 4)

Parallel Battery Spacers 3 AA To D Cell

Parallel Battery Spacers 3 AA To D Cell

10. Best Battery Organizer -Any Foam Battery Storage Organizer Briefcase

We recommend that you store all of your rechargeable batteries in a battery storage case that has a foam insert such as the one pictured below. One of these cases will also allow you to easily plan for which batteries are the next in line to use, just by the position of the batteries in the case to facilitate the rotation.
There are many different versions of foam battery storage organizers at the link below. We settled on the Alkoo battery organizer briefcase pictured below based on the quantity of each battery type it accommodates, plus it had a zippered pocket to hold packages of button sized batteries, and it had a battery tester.

The Alkoo Battery Organizer Holder Can Hold 200+ Batteries And Has A Battery Tester Checker BT-168

A Battery Organizer Storage Case Can Hold And Organize All Of Your AA, AAA, C, D, 9V, CR123A, LR44, CR2, CR1632 And CR2032 Button Batteries

Pros:
- Inexpensive way to store all of your batteries in one organized place.
- There are many variations to choose from that hold different quantities of different battery sizes to fit your needs.
- The foam keeps the batteries held in position
- Allows you to plan a rotation of batteries.
Cons:
 None
Check Current Prices & Availability:

1. Amazon carries the Foam Battery Storage Organizer Briefcases




The Top 10 AA, AAA, C, D, 9V, CR2 & CR123A Battery Chargers & Batteries In 2020

Caution & Warning

Use at your own risk. Please note that the information provided on this web site is for information only. TopSurvivalPreps.com and it's owner have no liability or responsibility for anyone using any items described on this web site including batteries and battery chargers.

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Solar Powered Prepping Series:

The following web pages are in progress!  They will be created throughout 2020 and the links will be added below as they are created.



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Part 4 (This Article):  Best AA, AAA, C, D, & 9V Battery Chargers & Batteries In 2020

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