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Fortkentdad's avatar
Fortkentdad
Explorer
Jul 20, 2014

Two Similar 12V battery in parallel and other questions

Well I just bought a second battery for my RV. My other battery is only a couple of months old so both are new this year. The one battery didn't make it through an unplugged camping weekend so we de...
MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
Jul 21, 2014
" But for batteries in parallel.. You can mix and match so long as they are the same voltage and chemistry"

Chemistry includes the age and conditions of individual cells. A sick battery can kill a healthy battery so fast it'd surprise you. /it's always best to cull prospects if specific gravity cannot be matched, or CCA load test amperage differs more than 5%.

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