I have one of the above from Lidl. I've not used it a lot.
I also have a couple of 12v car batteries, one of which wasn't knackered when I took it out of the car and has been sat there ever since.
Following SWMBOs reported sighting of a fox, I thought I'd set up a temporary wildlife camera in the garden using a WiFi camera I had handy so I sorted it out with a box for a bit of protection and it's been running overnight for quite a few nights (not actually touching anything of much interest - except one night it got the space shuttle!)
Today I thought I'd charge the battery for the 2nd time since it's been out there.. The charger has no meter or gauge so I've no idea what status the charging is at (though it has been used in anger in the past) - it just has an on/off light and a voltage indicator, and others which come on when it's full or trickle charging. There is a button but it isn't designed to allow you to change the voltage.
On plugging it in today it is showing it as a 6V battery and I can't get to any other options (which I think is probably right).
So does the charger work out the battery voltage from the remaining charge, and I've let it run too low? If so should I just let it carry on at 6V until it shows full then reconnecting will set it off on 12V? Or have I killed the battery? Or need I borrow another charger to do it?
(I tried the charger on the other battery and 12v lit up straight away)
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