My little panels put out about .4 amps max, they keep the batteries in my truck nice and topped off. When I check the batteries they are usually sitting around 14 volts.
But I have 2 really big truck starting batteries to disapate that current.
I have never heard of problems from slow charging batteries.
If you charge them too slowly to the point where they don't get a full charge before using them again that would create problems.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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