Re: [electricboats] Battery Recommendations

I have only day sailed with the Spirit motor and battery, so my speeds
were always low and would rarely use up more than 10% charge. I was
gathering data on self discharge in order to figure out how to charge in
the off season and on day 28, the system would not turn on until I
connected the charger. It did accept a charge. I have repeated this
sudden drop in charge level while idle. The first time was with cables
connected and I subsequently found out Bluetooth is drawing power
looking for the wireless remote even when the system is off and even
though my remote is the wired model.

The sudden drop also occurs with the cables disconnected, but takes
months instead of days. Charging after these events is more rapid than
should be possible which indicates to me there is still capacity there,
but the BMS has seen a cell it doesn't like and shuts things down. A
dealer informs me that I would have to substantiate the problem, send
the battery for analysis, and then hope for a fix or a replacement. My
warranty would run out before all that could happen, so hence the search
for alternative power.



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