hooking up a second battery
I plan to go camping for a weekend, but may not have power. I was thinking of bringing a spare battery and swapping it out. I also thought of just running jumper cables to the 'dead' battery. Would do...
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You can do that, swap them out or connect them together when you arrive. Keep the voltage above 12.4 if you want them to last. Recharge ASAP, sitting at low voltage for days will kill them. Get an $18 Camco double battery box and upgrade to a pair of GC2's, they will actually last a good bit longer if you give them basic care.
