Batteries in Parallel - Chief Delphi

16-03-2008, 14:24

ubermeister ubermeister is offline

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AKA: Eric VA

FRC #0449 (The Blair Robot Project)

Team Role: Leadership

Join Date: Jan 2008

Rookie Year: 2007

Location: Silver Spring

Posts: 48

Re: Batteries in Parallel

Thank you all for the input. What I'm trying to do is run a 12v to 120VAC inverter off robot batteries. I want to use two so that you can replace one without losing power.

I think I will go with a pair of diodes. This module with two diodes looks about right for the application:
http://www.st.com/stonline/books/pdf/docs/11644.pdf
(the inverter has two 35A fuses, so I'm assuming it will draw no more than 35A)

Thoughts? Should I give it a larger margin?

EDIT: oops, I missed the .74V forward voltage. I'll find a different one.

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Last edited by ubermeister : 16-03-2008 at 14:26.

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