Thread: Storage batteries

Hi Pedro and as your set up has solar, I take it you will be maintaining your house batteries while stored away, using the solar.

You can parallel any 12v lead acid battery to any other and most of the time this is going to be fine.
The exception is Calcium/Calcium ( Ca/Ca ) batteries.

You can still parallel them with any other battery and charge/discharge them while connected together. The problem with Ca/Ca batteries is that to keep them charging to full capacity, once a month or so, you need t give them a BOOST or EQUALISATION charge, which requires the battery terminal voltage to be raised to over 15v for a few hours.

This is fine for both Ca/Ca and standard flooded wet cell batteries but is an absolute No-No for gel and standby type AGMs.

So if you are content with disconnecting ( and remember to do so ) your batteries once every month or so, then a Ca/Ca battery will be fine.

But if you want to keep things simple, I suggest you get an AGM as your other battery.