Please Help newbie with the 1500x NEW Eneloops

robertt931 said:

I have a brand new set of the new 1500 cycle eneloops. I also have a BC-9009 charger from lacrosse. It charges AA and AAA. I am new to rechargable batteries and I would like help figuring out what the numbers mean.

I put 2 AAA's in the charger over night this is what the readings are:

The first reading is : Full ( I assume this means fully charged)
The second is : v 1.5 and v1.49
The third is : 233 mah and 216 mAh
The forth is : 12 ma and 13 mA
The fifth is: 1:13 and 1:07
I really want to know what these numbers mean . I used the batteries in different flashlights and I want the know as I can about these rechargeable batteries as I can. The pack I bought includes 4 AAA's and 8 AA's. I want to thank everyone in advance for any advise the give.

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Mr Happy said:

The first means the batteries have finished charging.

The second is the voltage. A fully charged battery sitting in the charger will be at about 1.5 volts.

The third is how much charge was supplied to the battery during charging. An AAA Eneloop can hold about 800 mAh, and when they come from the factory they contain about 600 mAh (the bucket is 3/4 full). When you charged them the charger added the missing 200 mAh to bring them up to the top (plus a bit extra due to losses).

The fourth is how much current the charger is supplying now. When the charger finishes, it applies a small trickle charge, to "brim the tank" as it were. In this case, that is about 12 mA.

The fifth is how much time the charger took to charge the batteries. The charge rate was 200 mA, and the charge added was about 200 mAh, so that took about an hour (200 mAh / 200 mA = 1 h).

The sixth and most important thing to know about that charger, is that it is best not to use the default charging rate of 200 mA. That is a bit low and can lead to missed terminations and overcharging. For AAA cells you should use the 500 mA setting, and for AA cells the 700 mA setting. Have a look at the manual to find out how to do that.

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