How to take care of AA and AAA rechargeable batteries? Things you should know

How to take care of AA and AAA rechargeable batteries? Things you should know

Auth Anushka Agarwal | Jun 03,2020

Batteries have surplus power. They can provide electricity to houses for an indefinite time, run devices, and store energy for future uses. This simple unit called battery has been innovated and tweaked to add to its list of positive characteristics to suit the needs of the human race.

 In a span of 50 years, batteries have come a long way from where they started, and the future awaits further transition for them. Now that batteries are being considered for electric cars and other automobile operations, there is a researching facility dedicated to finding the best versions of it. 

For household uses, AA and AAA rechargeable batteries have replaced alkaline batteries. There is a considerable evolution in the rechargeable batteries segment as well. There was a time when rechargeable batteries encompassed very less power within them, were accompanied by bulky chargers and required around 24 hours for getting recharged.

Fast forward today, these batteries are efficient, powerful, and cost-effective in their usage. Several devices like toys, remote, torch, etc., use rechargeable batteries. Brands like SmartCell batteries consist of 1200 recharge cycles and better capacity characteristics. 

How to take care of rechargeable batteries

If you want to increase the shelf-life of your AAA or AA rechargeable batteries, then the below-mentioned tips will come in handy. 

Always use a good charger for your batteries 

Smart chargers are the ones that will not over-charge or under-charge your devices. It is always better to buy rechargeable batteries and chargers of the same brand. Also, avoid using super-fast chargers as these types of chargers can deliver extremely high current which can heat up the rechargeable battery and deteriorate it quickly. According to a study, it has been found out that NiMH batteries might only last for 50-75 recharge cycles instead of average 500 recharge cycles if used continuously with super-fast chargers. 

Always select the right type of chargers for your battery

If you bought a NiMH rechargeable battery, then opt for NiMH charger only. Do not attempt to charge non-rechargeable alkaline batteries or NiCd batteries with NiMH charger. Never mix batteries with different voltages. 

Also, when charging batteries in pairs, the two batteries must be of the same capacity and charge level for the efficient charging process. For example, if you’re charging a high capacity battery that is completely drained with a lower capacity battery that is half full, then the different charge times might lead to overcharging. This issue is well avoided by intelligent chargers since they employ individual channel charging. This means the charge is controlled individually for each battery. 

Avoid charging batteries with different capacities in standard chargers 


Sine that can shorten the lifespan of the battery. Try to recharge your batteries when it shows signs of low battery or if the device is behaving dimly. 

Keep the battery contact surfaces clean

As a battery buyer and consumer, it is important that you keep the battery contact surfaces and battery compartment contacts clean. 


Just rub them with a clean pencil eraser or a rough cloth each time you replace the batteries. 

Do not leave your batteries in a charger for more than 24 hours 

Smart chargers are set to switch off once the rechargeable battery is dully damaged. This avoids damage to the battery. For others, it is best to take the batteries out of the charger once they are charged. 

Avoid leaving a rechargeable battery in a device once it is completely run down 

Even after discharge, a continued drain on the battery for a few weeks can reverse its polarity and render it useless. So, it’s better to remove the battery from the device once it has discharged. 

Remove batteries from the device when no longer in use

Suppose, you won’t be using your rechargeable batteries for a very long time. Instead of keeping it plugged in, it is better to remove them from the device. 

Avoid storing recharge batteries in warm places 


Because it decreases the recharge cycles for your battery. Storing batteries at lower temperatures reduces the rate of self-discharge and preserves the initial energy stored in the battery. Conversely, do not store your batteries in a refrigerator also. Store them in a cool place. 

Be patient with new batteries 

New rechargeable batteries can take over 3-5 recharge cycles to achieve a stated capacity of the battery. So, give it time to adjust to your device and its power needs. 

Wrapping it Up

These tips will help you to take proper care of your rechargeable batteries. Since these batteries stay with you for a longer duration, it is a better purchase than alkaline batteries, in most cases. However, some devices like wall clocks, smoke alarms, etc., use very little power. Therefore, it is better to use alkaline batteries with such devices. Browse through the SmartCell batteries products if you are looking for affordable and powerful battery variants. 

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