Didn't know how else to describe it.
Charged a car battery over the weekend for use on electric fence. 2 lights on charger, charging/ready.
Went to it Monday morning both lights off. Unusual. Charger warm, unplugged it and left.
Tried battery this morning, fence energiser showed low battery.
Took battery back to shed, checked water levels. Needed topping up, just showing metal bits (can't remember name for them). On 4th cell, as I took screw top out, there were wisps of smoke/steam?
Put top back, not screwed down, and left it.
Can't get hold of husband to ask him, so any advice please? Never seen it do that before, so is it normal?