J
joinerjohn
Any of you sparks explain how this works? I have an old battery charger and 18v batteries, 2 of the batteries won't charge up at all. The charger switches to the fully charged light as soon as I plug them in. The other two work ok and do charge up.
I took one of the batteries apart, and there are just the two connections on the batteries + and -.
When the battery is plugged into the charger, how does it determine if the battery is charged or not? Does it work off the resistance of the cells or some other means of determining the state of the battery?.
I know on some of my other cordless gear, the batteries have three connections and the charger uses one of these to determine the state of the battery, but how does this one with only two connections work?
Any help appreciated chaps.
I took one of the batteries apart, and there are just the two connections on the batteries + and -.
When the battery is plugged into the charger, how does it determine if the battery is charged or not? Does it work off the resistance of the cells or some other means of determining the state of the battery?.
I know on some of my other cordless gear, the batteries have three connections and the charger uses one of these to determine the state of the battery, but how does this one with only two connections work?
Any help appreciated chaps.