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i bought it to make a diy 4s charger. there are two ways of charging packs safely balanced. either charge each battery separately with 4.2v through the balance connector, or apply the correct voltage(for 4s 16.8v is needed) to whole battery leads and put the balance connector to one of these boards.
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Excellent
Excellent
Thank you
super schnell geliefert!
OK
Recommend
Perfect for application
Good item good solder quality