I noticed my car battery has an LED in the middle, under a viewing lens. It's not lit, but appears it's greenish in colour.
Does this serve a notable purpose? Does it only emit light when the battery's low? If so, green seems a stupid colour choice... Or more worryingly should it be lit *now* as the battery appears fully charged and operational?
Green means the charge state is ok. Black low and needs charging. Red, the battery needs replacing. Although a long slow charge may change red to green.
I have just removed the lens cover and examined it. It does not taste of mint, and has a rather similar effect to chilli-powder on the tongue. Where did you discover this was 'mint' flavoured? Must be different battery you've got.
I had one where no amount of charging or topping the cells (which were low when I got the car) would make it show a steady green, or anything in fact. But walloping the battery would make it bobble about greenly.
Only time that battery failed me was when the boot light decided to stay on - It must've been doing it for a while, but one very cold winter morning after not using the car for a couple of days there was next to no charge at all. Bought a new battery as I had to go out in a hurry, but after finding the drain (the new battery died under similar circumstances) and charging the old one, it performed flawlessly for months. I stopped using tyhe car, didn't fire it up for 3 weeks or so, and it turned and fired fine when I finally got round to flogging it.
So just how useful those floaty things really are, I don't know...
Agreed. Mine has not shown green for over 12 months. Still no sign of slow cranking even on cold mornings but checking with a DVM it's won't hold a charge above 12.4v and drops to around 12v after standing overnight so I guess it's living on borrowed time.
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