Bill,
When you say the TM's built-in charger, are you talking about that T-handle knob that disconnects power from the battery and the outlets/appliances inside? When we recharge the batteries, we engage the T-handle so the batteries are "connected", and then plug it into shore power only for a day or two before unplugging it. We never leave it just plugged in otherwise and we disengage the T-handle to prevent phantom power drainage from the batteries. This is how the dealer told us to do it, but I just need a maintenance free battery.
Thanks!
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