Battery research

I am contemplating a battery maintenance device to leave attached when my car is in the garage.

I think I want somethign which will hold voltage at 13.2 volts or thereabouts, some seem to maintain 14.4v, which is ok for a top-up charge but seems to be too high to maintain in the long term.

I plan to work through a few articles/FAQs on batteries and see what products best match the recommended advice.

These seem like a good start :

Car Battery FAQ

Battery Tutorial

Wikipedia on car batteries

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