How to choose a good quality AA battery charger?
An AA battery charger is a device used to recharge a rechargeable battery (also known as a storage battery). Often one refers to a home use AA battery charger as an adapter unit which drawing electricity from AC current on a wall plug and converting electricity to a constant DC power and forcing a constant DC power source to a battery being charged.
It is important to know how to choose a good quality battery charger when come to choosing the right battery charger; this will ensure the batteries are charged efficiently and accurately. There are many models in the market depends on the input voltage, battery type and battery capacity to choose from.
Few things to check and consider
- Choosing the right model
- As a rule of thumb, do not mix up multiple battery types on a multi-bank charger although there are AA, AAA or 9V slots you might think they are wasted. Mixing different battery types will result in incorrect charging, reduced battery life and possible damage to the bank which does not match the charger’s settings.
2. Charging times
- The length of time of recharge your batteries depends on the battery and charger size. Do refer to the specification stated in the cover or the packaging of the charger
To view the NiMH Energizer Battery charger in action, 15 mins to complete charging
3. Battery capacity in amp-hours
- It is critical to estimate the duration of charging your battery. If you underestimate the required charging capacity, the charger will take longer to charge your batteries. If you overestimate, the charger may deliver too much current.
- Excessive charging current can cause battery heating, accelerated water loss in flooded-type batteries and damaged batteries.
- As recommended by many manufacturers, a maximum charging rate of 20% of the amp-hour capacity of the battery. For example, a 100 Ah battery should not be charged at more than a 20 Adc rate.
4. Input voltage
- Depends on the country you are located, ranging from 120 or 230 V)
5. Battery type
Type of rechargeable batteries
Although the initial cost of a rechargeable battery is higher than a disposable battery, but it can be recharged many times, some even claim the NiMH type will have a longer service life of 100-1000 charge cycles.
The rechargeable battery comes in different sizes and different combination of chemicals, lead acid, nickel cadmium (NiCd),nickel metal hydride (NiMH), lithium ion (Li-ion) and lithium ion polymer (Li-ion polymer)
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