Nigel P

Would it take longer than the 12 hours or so I had it hooked up to the mains to top up the two leisure batteries from 12.2 showing on the Sargent, ie could it have dropped so quickly because I maybe hadn't put a full charge in? How long is it safe to leave it hooked up to the mains to ensure the batteries are fully charged if everything is turned off? Cheers...Nige

David, thanks for the reply, when hooked up to the mains, it shows 14.3 volts charging. When not hooked up, it shows a charge on the Sargent of 0.3 to 0.4 V which I'm assuming is the Solar panel. I can't check the charge on the Sargent with the engine running, but if you run it for 5 minutes or so, it does show that a charge has been put in when the engine's stopped, though it does drop down after the batteries have settled.

Since I posted that 45 minutes ago, the Sargent is now showing the leisure batteries at 12.3 V, having dropped from the 12.4/12.5 previously

We have a new to us a 2009 Autotrail Mohican. It has a Sargent EC 328 controller, with two 110 amp leisure batteries that are almost one year old. Prior to going away for Saturday night, I hooked the van up to the mains to ensure that the leisure batteries were fully charged. ( the Sargent said 12.2 prior to hooking up the van.) After having it hooked up to the house mains for about 12 hours or so, at rest they showed 12.9 on the Sargent. After just one evening using the interior lights (LED's), and the Trumatic heater fan for 40 minutes, we woke to find that the Sargent was showing 12.2 in the morning, but it didn't drop below that for the rest of that day. ( no power switched on). Is it normal for the Sargent to show its as low as that after one night of use? The van is now back home and is showing between 12.4 and 12.5 on the Sargent, having been sat on the drive since Sunday when we got back. So I'm assuming it's the Solar panel that's topping it up. So my questions are, Is it normal to drop to 12.2 on the Sargent after one night use? Would it take longer than the 12 hours or so I had it hooked up to the mains to top up the two leisure batteries from 12.2 showing on the Sargent, ie could it have dropped so quickly because I maybe hadn't put a full charge in? How long is it safe to leave it hooked up to the mains to ensure the batteries are fully charged if everything is turned off? Thanks I advance Nige