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What sized battery cable did you use?

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Battson

Well-Known Member
Joined
Jan 30, 2012
Messages
610
Location
New Zealand
Hey all,

I am interested to hear what sized battery cable you are using?

I am installing a Skytech Lightweight starter motor, which is of course the largest instantaneous demand on the battery cable. I emailed Skytech, and seemingly got a reply from the "GM" there (which was surprising) who told me to use 0AWG or at least 2AWG for the starter to battery connection. My battery is back under the seat for balance, so the cables are more than just a couple of feet long. Expected draw for cranking is between 180-280A (instantaneous, obviously, only for a few seconds). My battery is an Aerovoltz Lithium Iron Phosphate model, 410CCA & 12V.

I know many aircraft are using 4AWG which is what I'd planned on using, and going to look at the size 2 and 0 cables, they are more like overhead powerlines than battery cables, and would probably handle >100A continuously..... is the man at Skytech simply being conservative?
 
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