Caravan Solar Vs Inbuilt Battery Charger

Submitted: Friday, Jun 29, 2012 at 19:35
ThreadID: 96584 Views:2948 Replies:2 FollowUps:1
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Hi Guys and Girls

I have a possible problem that I just can't get my head around. So please bear with me. My caravan has a Ctek MXS 25 battery charger and 2 x 120amp agm batteries the van also has a couple of Solar panels and a Solar regulator. Now here's the issue, when camping for a for a few days the battery voltage ranges between 13.5v in the afternoon down to 12.7v first thing in the morning on the surface that seems ok. Now when we arrive in the Caravan Park the battery voltage reads 13.5 I plug into 240v the Ctek starts charging at 25 amps but after 2.5 hours with the charge rate slows to 20amps, the battery voltage reads 14.8 volts. I would have thought at 14.8 volts the charger would be float charging not bulk charging as appears to be happening. So I just unplugged the Ctek. Thanks all in anticipation.

Peter
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