2020 Kingham leisure battery

10.21.2024
I thought I’d share this in case anyone has similar issues
When I was using a pub car park stop over I had no power from the leisure battery and an alarm saying low power on leisure battery sub 9v
The battery however was showing good according to the green indicator on top of battery.
As I was at the Caravan and camping show last week I asked some of the Autosleeper salesmen if they knew what the problem might be. Could it be a fuse I didn’t know about? I asked. To which they said, no your battery is dead and needs replacing.
After putting a meter on the battery and getting a good readng I decided to investigate further and consulted my manuals.

Long story short I found an inline fuse behind the battery compartment which was blown. Changed the fuse and I now have power off grid and my battery was fine. Good job I never took the advise of those Autosleeper guys.

Hi, I have this same problem but with vehicle battery if I switch everything off then back on it clears the problem till next time. Kevin

I had my vehicle battery replaced under warranty after only 10 months old. 
After 18 months I too was getting low battery warnings on the leisure battery. I replaced this with a new battery but continued to get low warnings. I investigated further and found that the battery charger wasn't working which was due to a poor contact within the power plug connector of the charger which was an easy fix but bloody annoying to find.

The Sargent PX300 battery charger is rated at 20A output so is likely to blow the 20A fuse fitted to some AutoSleeper van leisure batteries when charging a battery at full capacity. (The in-line fuse is located on or Symbol at the side of the leisure battery box). When this happened on our van, I was told in a telephone conversation with Sargent that the later vans had a 30A fuse fitted and was advised to upgrade mine. Upgraded to 30A and it’s not been a problem since.