TL431 12V Battery Charger Complete

Completely tested and working. Schematics:
www.bristolwatc...

[@LewisLoflin]

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[@jp040759]

Cool application of the opto in the circuit. Simpler than designing a non isolated circuit. Saves on calculating many circuit interactions.

[@lawalmohammed83]

Please Sir what modifications could be made to charge 4 lithium ion battery (16.8V) in series?

[@LewisLoflin]

The voltage is too high.

[@qzorn4440]

A most interesting battery charger video. Thank you.

[@LewisLoflin]

Thank you!

[@quantizedtech2170]

What modifications can be done to get 20A out of the circuit to be able to charge 200AH lead acid battery

[@LewisLoflin]

That TL431 CCS is limited to ~1.5A. I have another circuit coming up that could handle higher currents.

[@alisolar4156]

My version 6 amp tl431 based @@LewisLoflin