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6 volts lead-acid cell charging device selection

Other Parts Discussed in Thread: UC2909-EP, BQ24450, BQ2031, UC2906

Hello!

I need to charge three 6V in series (18V total) lead-acid cells. So, my question is: Which device do I have tu select to manage these cells properly?

UC2909-EP ?

BQ24450 ?

BQ2031 ?

UC2906 ?

Can I treat cells as a single 18V cell? Can I charge it with BQ2031 (Vin max 5.5V)?

 

Thanks! Sorry for my poor english.