Investing the quality battery chargers for AA and AAA batteries are necessary and worth of your money. If you use a poor quality charger, it’ll cause your batteries reduce capacity from time to time. Plus, the cycle life of your batteries will reduce quickly too.
What is the best AA battery chargers?
So, what is the best AA/AAA battery chargers? Here are some main features of them:
- Integrated with discharging function.
- Control separate channel charging.
- Adjust the current for quick or slow charging.
- Refresh battery which means it will restore the battery’s capacity.
- Auto charging off when the battery is full.
These functions are only on the best smart AA/AAA battery chargers.
Why invest in the smart battery charger rather than dumb charger?
All of the dumb chargers are just charge and charge without control or/and monitor battery status as the smart chargers can do. They lack many basic functions such as discharging, auto stop charging when the battery is full, etc.
That’s why your batteries sometimes, get overcharging or hungry charging and the both will reduce battery life quickly. The price of the dumb chargers is about $15 so you can’t expect much from them.
Buying the smart battery charger is the best choice for your rechargeable AA/AAA batteries. They overcome all weakness of the dumb chargers above. However, the cost for a best smart AA/AAA battery charger is not cheap. Its price ranges from $40 to $100.
The FAQs for AA and AAA battery chargers
1. Why does rechargeable AA / AAA batteries need to discharge before recharging?
Discharging battery before recharging helps to avoid memory effect. That means if batteries are not empty when recharging, some chemical compounds will cover the negative side of battery which results in reducing capacity and short lifespan.
Note: the Eneloop rechargeable battery is one of the best brand which has no memory effect.
2. Choosing odd chargers or even chargers type?
With odd charger (single channel charging), you can charge each single battery separately (each slot charges independently). The even chargers (dual channel charging) need a pair of battery per once.
If you put a single battery into the even charger, it does not work. Personally, I think the type of odd chargers is the most convenient.
3. Slow charging or fast charging?
The smart chargers can control the charging current. If you want to fast charging, just set to increase current. However, the slow charging is best.
I highly recommend you set 500mA for AA charging and 200mA for AAA charging if you are using the smart charger. You cannot do it with dumb chargers because they are a default charging current.
4. Why avoid overcharging?
The overcharging will increase the temperature. If you use poor quality AAA/AA rechargeable batteries, the overcharging can make fire and explosion. It decreases the cycle life of the batteries too.
5. What is the restore battery’s capacity?
Some smart charger can refresh (restoring) capacity of old batteries. To do this, the smart chargers will discharge batteries slowly and then recharging it.
This process will repeat again and again until the batts’ capacity is no further increase. The refreshing helps old rechargeable batteries back to the optimum capacity.
With the benefits that I listed above, you won’t save money by buying dumb chargers, it’ll cost you more later. The best smart AA/AAA battery charger is great for choosing.