this post was submitted on 31 Jan 2024
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IAMA AMA Tech AMA (slrpnk.net)
submitted 9 months ago by [email protected] to c/[email protected]
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[–] [email protected] 44 points 9 months ago* (last edited 9 months ago) (2 children)

Considering that a 12V battery has an internal resistance of 20 milliohms, the potential current through this thing would be approximately 600A.

It might be too hot to handle (pun intended)

[–] [email protected] 6 points 9 months ago

You can also get that from just the label. The CCA rating (cold cranking amps) is the max current that specific battery can supply in short bursts. 600 CCA is pretty typical, but I've seen up to 900 in the batteries I ship.