Volts and Amps are two different things. You could have a battery charged and on an amp meter readin 12+ volts, but as soon as you put any AMPs on the battery it kills it.
An example is I can get the key pad on, but when I hit the botton and the gauges start coming up the whole boat shuts down.
12 210 Team (BoatMate trailer)
06 196 Limited (Loadrite)
List of Boats Owned
08 210 Team (BoatMate trailer)
1992 Flightcraft - 1/2 owner - Sold to other half because moved
07 Air 216 Team Edition (Ramlin Trailer)
04 SV211 Limited (loaded like a team) (Ramlin Trailer)
00 Sport Nautique (Ramlin Trailer)
99 Ski Nautique (Ramlin Trailer)
86 Wellcraft Elite
81 Ski Nautique (Ramlin Trailer)