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opfrei

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Hi all, diy newb here trying to clean up the electrical on my sailboat.

Current power storage consists of 8x 130Ah lithium batteries, which are charged by the alternator and/or an 815W PV solar array via Xantrex C40 charge controller.

In rewiring my house branch breaker panel, I accidentally bypassed the charge controller, which subsequently caused the batteries to reverse drain through the panels that night.

The batteries held a 14V charge prior to this incident, but they have now dropped to 11V. The health status indicator on each battery still blinks green, although I don’t know how much it tells.

In the meantime, I re-connected the charge controller, correctly this time, as well as an automotive battery charger @10A overnight to hopefully get my batteries back up to full.

Woke up this morning and batteries still only show 11.3V despite automotive charger saying it reached full charge. I’m worried I made a big mistake... Did I damage my panels? Or worse yet, fry my batteries? Please help!
 

James

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opfrei

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DIY
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opfrei

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DIY
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