Dave
Although I don't need to use this... because of EZ access to check my boat's batts' fluid levels... there is an auto fill level contraption for LA batts. I don't recall brand/model name. Maybe someone will chime in. As I recall, the system works off a "feeder" jug/bottle; long as you keep it full - it keeps the batts full too, to correct fill level. Sounds like no muss no fuss once installed.
Cheers! - Art
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