This is what I have:
x5303 rear hub motor on 26" MTB
36-72v crystalyte controller
12, 18ah sla batteries wired for 72v @ 36ah.
Can I hookup a small ( maybe 10w or so ) 12v ( or less ) solar panel to the 72v system ? This way when I am at work and the bike is outside the panel can slowly charge the batteries? I know it will not charge it up much but the question is will it work with out damaging the batteries ? I live in Arizona and the bike should get a solid 6 hours of sun.