Unmatched parameter

[Wong]

Hi,
I have a set of charger and rechargeable batteries. All parameters
are match except the mAH. The rating of the battery is 1800mAH while
the charger only 1600mAH. Does this matter ? What does this mean ?
Thanks for the answer.

 

[John Popelish]

Wong wrote:

Hi,
I have a set of charger and rechargeable batteries. All parameters
are match except the mAH. The rating of the battery is 1800mAH while
the charger only 1600mAH. Does this matter ? What does this mean ?
Thanks for the answer.

mAH is milliamps times hours. An 1800 mAH cell will drive a constant
current load 18/16=112.5% as long as a 1600 mAH cell before it runs
down. For instance, if your load draws 100 milliamps, the 1600 mAH
cell will drive it for 1600/100=16 hours, while the 1800 mAH cell will
drive it for 18 hours.

It might be possible to charge the 1800 mAH cells 12.5% faster, but it
certainly will do no harm to charge them at a lower rate that is safe
for a 1600 mAH hour cell. It will just take 12.5% longer to finish.

--
John Popelish