[john63.]

Battery now fully charged pressed controller this morning 3 digits saying fully charged
Just been now 2 digits half charged not been used any ideas

[Don Kee]

As has been said a few times now, think your batteries shot...

Just because the battery's taking charge, doesn't mean it'll hold charge ( in other words you can charge it up, but it'll decrease in power alot quicker than when it was new)
This is the way leisure batteries usually go...it'll keep taking charge for the next year or so, it just wont last very long

Have you tried another battery?

[Ian Sheppard]

At 10 months the battery is probably the issue. As above over time they loose their ability to hold a charge. The battery will show as taking a charge and will even charge up as it always did. However during the discharge/Recharge cycle a layer of Crystalized sulphur builds up on the lead plates. This reduced the batteries ability to hold a charge. The effect is noticeable if you have a volt meter. A new battery will hold a voltage level EG 12V for 4  hours or so when under load (Pump on)  However an older worn battery would  likely see the voltage fall off in less than a hour. Usually the fall off is dramatic for Example more than 0.5V

This article goes into more detail   https://www.linkedin.com/pulse/12v-deep-cycle-batteries-ian-sheppard?trk=mp-author-card

In regard the Williamson Varistream taking a current when switched off I do not know how much current the processor will draw. It is likely to be relatively small.

We engineer the V11 to be as efficient as possible and when powered down the processor draws less than 100th of an amp an hour EG it would take 100 hours for the processor to draw 1 amp from the battery.