Hi: I have a cheap wal-wart style battery charger that came with a pair of heated gloves I just purchased and it has an output of 12.6 volt,1.0 amp output for charging two battery packs of 3cell 18650 batteries.It comes with a female to female Y connector which plugs into the charger’s male connector allowing two batteries to be charged at once. When the charger is plugged into the wall a red light comes on and when charging is completed,the light turns green.
I use the two battery packs at different times,so the voltage in each pack is never the same,so if I plug one battery into one side of the Y that’s,say,9 volts and the other plugged into the other side of the Y is, say,11 volts,will the charger ‘turn off’ when the higher voltage batt (11volts) reaches 12.4-12.6 volts? If it does,will the lower voltage battery(9volts) still need to be charged on it’s own only having 10.4-10.6 volts put in? Thanks,HB
What will happen is this, because the pack with a lower voltage is more open to taking a charge as there’s less resistance of internal amps, that will charge up alittle quicker than the already higher voltage and amps pack and by the time the lower voltage pack is close to the higher voltage packs amps and volts they will start charging and accepting a charge with around the same amps and voltage from the charger so when it starts detecting a full feedback they should both have the same voltage and close to the same amps per pack when fully charged. Personaly i like to be able to remove each battery and balance charge them, it’s safer and extends each individual batterys life and the entire battery packs life Alot!.
Thanks and I agree with balancing each cell,as I have had Lipo chargers in the past charging 3S,5S,6S Lipo batteries for my 1/8 RC cars. Unfortunately each pack is sealed with no provision to balance each cell. Thanks,HB
Maybe this is something similar to what I need to use,so I can check each cell voltage seperately,as of now the cells are joined inside the shrink wrap.
I would like to be able to check and charge each cell on it’s own.
Battery holder:Battery holder: Li-Ion 18650 Battery Holder (3S1P) With 2.6" long 20AWG & PCB
Thanks,HB
Yep that’ll work, Here’s the same but cheaper
3s1p 18650 11.1v battery holder case li-ion with built in pcb
and here’s the
5mm dc power plug
Thanks a lot! HB
Your welcome.
Some pics would be nice with the new power pack build or when your all done.
I will. Thanks,HB