Original to replace your old battery packs perfectly!

In order to make sure the battery pack work perfectly with the longest using life.We select battery cells strictly to build up the battery pack.

1)The capacity difference is controlled within 20mAh

2)The internal resistance is controlled within 50milli-ohm and the Max difference is wthin 3milli-ohm

3)The max voltage difference is 5milli-volt

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