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Originally Posted by 02FLHRSEI
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Is there a product out there that will allow me to use the Powerwise charger for the bulk of the charging (after use) and then connect a maintainer type charger that will keep the batteries in top condition while it sits for periods of 10 days or more. Hopefully one that will not need a pint of blood to get.
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There may be some inexpensive 36V float or trickle chargers out there, but I haven't done more than give them a passing glance since I use DPI chargers that go into a float charge mode after the regular charge cycle completes.
Float chargers are constant voltage, so they do the best job of keeping the batteries fully charged while in storage.
Trickle chargers tend to be current limited rather than constant current and are a little tricky to get right.
Too much current and the pack voltage may creep up into the heavy gassing range and the batteries will use a lot of water.
Too little current and the batteries will just take longer to self discharge into the sulfation range.
To do it right, you have to know what the self-discharge rate is of you batteries and select a trickle charger that puts out that rate.
Than the self-discharge rate varies with temperature.
Like I said, float charging is best, and it is easiest.