swapping and charging batteries
I have a 1 year old trailer. It came with a deep cell battery, and it is good. I plan on adding a second battery. I have 2 older ones,that at the time, were good. Today,I swapped out my good battery f...
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time2roll wrote:swimmer_spe wrote:If the battery held 12.5v after sitting for a year... that would generally indicate good condition.
When I plugged it in,it was at 12.5V. I have not charged it since sometime last summer, or the fall before. Not bad...
Put them all in use together and see what goes.
12.5 after a week charging is not good. May be marginally OK but not good. Swing by an auto parts store. Most will do a load test for free.
Mixing batteries you get the lowest common denominator so your good battery will be drug down by the marginal battery
