Q&A for How to Charge NiMH Batteries

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I have a 3.6 NiMH battery pack with 3 batteries inside. Can I open it and use one of the batteries?

Community Answer

It's not a great idea unless you know what you are doing. But if it's a functional pack you should be able to extract a functional cell. Be warned that packs may be made with cells that are not a typical consumer size, e.g. AA, and the contacts/terminals may be spot welded together. If you pierce the cells or damage a contact while disassembling, you could create a dangerous or just plain useless dead battery.

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Question

What does the blinking green light mean?

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If the light goes from red to green and is blinking, it indicates that it will be fully charged soon.

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Question

I have to buy a charger to use new N1-MH batteries. Where can I find one?

Adrian

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You can find them on online sites like Amazon.

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Question

What should my voltage reading be on a 6V NiMH battery that is fully charged?

Community Answer

It should be close to 6V.

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Question

Can I use the same charger for NiMh and NiCad battery?

Adrian

Top Answerer

If the charger says it can, then yes. Most universal chargers for everyday rechargeable batteries will work with both types as well. Most modern chargers will work with both types.

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Question

Will accidentally hooking the charger leads backwards damage the battery when charging?

Community Answer

It probably depends on the charger, but if it was only a few seconds, it should be fine.

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Question

I have a Hitec x4 charger. What does 'Charged capacity' mean? Does the number have one decimal place or two?

Gorgeous

Community Answer

Charged capacity is how much capacity the battery has when fully charged. It's measured in milliamp hours, or mAh. 1000 mAh is 1 amp hour, and that means that the battery can provide 1 amp for 1 hour or 2 amps for 30 minutes.

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Question

Does charging two batteries take the same amount of electricity as charging four batteries?

Gorgeous

Community Answer

No. If you have two AA batteries in one charger, the electricity will be split evenly between the batteries. If you have four, it's split even more, and it takes more electricity to charge them. It's healthier for the batteries to receive less electricity in a given amount of time, so charge more batteries at once if possible.

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