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diy solar

16S Battery use a 13S Li ion charger to get 3.4v/cell?

nate_syd

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Apr 14, 2021
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At times (cloudy day) I need to charge my batteries from the wall - to supplement the solar. (well use my other solar array)
I currently use a 8S hobby charger, but changing to 48V so need a 16S charger.

Also going "cheap" as its only used occasionally - but most cheap ones are 3.65v/cell, and I only charge to 3.4v/cell.

Would it be possible to use a 13S Li ion charger instead - which gives 54.6v, 3.4125, which is perfect.

Voltage is OK, what are the charging curve differences?
It may hit float early sure, but thats not a problem.

other options?
 
Should be fine in theory, lithium chargers are just a CC/CV power supply so it shouldn't care.

Some smarter chargers won't start if the voltage is too low, but I don't see any mention of that so should be ok.
 
Well - been using it for a while & it works really well.
Gives the good cut off point of 3.4125 - easily switched on/off with smart switches etc.
 
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