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What fuse to use or breaker for a 12 volt 5 amp/hour sla battery? Answered

What size fuse would I use for a 12 volt 5 amp/hour sla battery.  Better yet, are there breakers for same battery.  I am wiring an electrical system for a bike.  As the complexity increases I accidently short the battery more often.  


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Best Answer 10 years ago

Well the Fuse size would be determined by the Load you wish to push. In the mean time during your initial design process, to protect from the occasional foul ups, I would put a small 1 amp fuse just for safety. This will pop immediately if wires get crossed somehow.
After that just determine the total load your rig pulls and shoot just high of that. Also keep in mind the initial load of a typical PM magnet motor (the type ive seen used for this type of application) is going to be allot higher than what it will require just to run.
**I would use a "Breaker" rather than a fuse especially for the motor, and then for the electronics fuse those separately.

Hope that Helps!