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Need advise on charging Li-Ion battery

Jouellet

Feb 2, 2015
86
Joined
Feb 2, 2015
Messages
86
Hi folks,

I bought a couple of these:
http://www.ebay.com/itm/121845454110?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

and a couple of these:
http://www.ebay.com/itm/351633458803?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

my need is to put 2 batteries in serial, in parallel with 2 more. (2x2 arrangement: 7.4V, double capacity)

I'm planning on using one of the charger module, so here are my questions:

#1: Since batteries are 3.7 volts, does the module needs to be fed with 7.4 Volts or a higher value should do: module would regulate the voltage ?

#2: Can I use 1 module to charge the 2x2 arrangement, or do I need 1 module per serial pair ?

thanks
 

Alec_t

Jul 7, 2015
3,587
Joined
Jul 7, 2015
Messages
3,587
The charger module datasheet should specify the input voltage range.
 

Colin Mitchell

Aug 31, 2014
1,416
Joined
Aug 31, 2014
Messages
1,416
You can really only charge 1 cell at a time. The charger only charges 1 cell at a time.
You will have to add a switch to separate the parallel cells.
 
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