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Leisure Battery charging

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Leisure Battery charging Empty Leisure Battery charging

Post by Patrick Macdonald Thu Feb 04, 2021 10:11 am

i keep the 2009 Nuevo at home, and charge batteries every fortnight or so. The leisure battery (age unknown) seems to lose its charge quite quickly, and the Drain window on the Sargent shows a high drain of about 80%, yet the only use is by the Sargent (and Central Locking?). Should I leave it on charge continually, or is the Battery losing its charge and needs replacing? is it unwise to leave it on charge all the time? Any advice gratefully received.
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Leisure Battery charging Empty Re: Leisure Battery charging

Post by oldfred Thu Feb 04, 2021 10:56 am

While the sun is so low in the shy  and I get less solar charge I unplug the large (50 amp?) fuse to the leisure battery when parked up. The solar charger is connected with a smaller fuse. 

When you plug it back this resets the Sargent unit and it should no longer show a high drain when there is none.
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Post by Roopert Thu Feb 04, 2021 11:50 am

I'm not sure what Sargent control system you have on a van of that age, but the current monitor on units of that age is known to drift with time, and needs regular recalibration.

If you say what Sargent controller you have, someone here will probably know the procedure, which typically involves a few button presses on the control panel.
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Post by Patrick Macdonald Thu Feb 04, 2021 4:31 pm

Thankyou for suggestions. I think my Sargent is an EC325 so any further advice would be very welcome.
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Post by Roopert Thu Feb 04, 2021 5:08 pm

EC325 User Manual is here:

[You must be registered and logged in to see this link.]

Recalibration procedure is on page 13.
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Post by Dbvwt Thu Feb 04, 2021 5:11 pm

Patrick, I’m not sure if you have solar on your van, if you do then just ignore this post!
If you don’t then a decent ‘fit and forget’ solar install is definitely something to seriously consider.
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Post by Tigerbadge Thu Feb 04, 2021 7:37 pm

Patrick Macdonald wrote:i keep the 2009 Nuevo at home, and charge batteries every fortnight or so. The leisure battery (age unknown) seems to lose its charge quite quickly, and the Drain window on the Sargent shows a high drain of about 80%, yet the only use is by the Sargent (and Central Locking?). Should I leave it on charge continually, or is the Battery losing its charge and needs replacing? is it unwise to leave it on charge all the time? Any advice gratefully received.
Patrick I’ve had the same problem, but my battery drops down to 7.6v over 5 days & have checked the drain on Sargent which reads no drain & with multi meter & same result so battery will be changed when we are allowed camping again.
I don’t have a solar panel, but I do leave my van plugged into electric for 4 -5 days just so van battery is topped up & I have a heater on timer for an hr a day in this cold weather.
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Post by Patrick Macdonald Fri Feb 05, 2021 11:26 am

Many thanks for your advice.
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