UncleRJ
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I admit to being a little anal when it comes to battery safety so I have my Xtar VP4 charger on the lamp table right beside my comfy chair where I can keep an eye on it. And beside it is an old glass rectangular ashtray just the perfect size to hold 8 batteries side by side When a spent battery or batteries come off the charger they go to the end of the line in the battery rotation.
Anyway, one day I had just pulled out a VCT4 battery that had been fully charged to 4.20 volts out of the charger and put it into my jacket pocket (FYI, nothing in that pocket but the battery)as a spare as I was going to be away for about 6 hours.
Turns out that I had not needed to use it and when I got home, I forgot to take it out.
Three weeks later, I find it, figure it could use a bit of a charge, popped it in and after a moment, the charger showed a charge of something like 4.32 volts!
Now I know that a battery in good condition will regain some charge due to the normal chemical reaction of their construction with time but I would think they would never exceed the top rating for the unit.
Any ideas?
BTW, I used the battery right after that. Put it through a charge cycle to 4.20 v and let it sit for a couple of weeks. Popped it in the charger and this time it showed a slight drop of voltage as expected.
Anyway, one day I had just pulled out a VCT4 battery that had been fully charged to 4.20 volts out of the charger and put it into my jacket pocket (FYI, nothing in that pocket but the battery)as a spare as I was going to be away for about 6 hours.
Turns out that I had not needed to use it and when I got home, I forgot to take it out.
Three weeks later, I find it, figure it could use a bit of a charge, popped it in and after a moment, the charger showed a charge of something like 4.32 volts!
Now I know that a battery in good condition will regain some charge due to the normal chemical reaction of their construction with time but I would think they would never exceed the top rating for the unit.
Any ideas?
BTW, I used the battery right after that. Put it through a charge cycle to 4.20 v and let it sit for a couple of weeks. Popped it in the charger and this time it showed a slight drop of voltage as expected.