Sony vtc5 overcharged
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That's still safe, but barely.
Does your charger have an automatic cut-off? most chargers, like the nitecores and the chinese-made enb-brand usb chargers all have cut-offs at 4.2v, after which it'll trickle charge around 4.2v to 4.25v (on average).
If you overcharge too often, your battery life may significantly decrease, it won't hold much of a charge, and may at some point never charge again. I've done that before, thankfully to a cheap AW cell and not an expensive sony, so learn from me and don't overcharge and over-discharge your batteries.
Does your charger have an automatic cut-off? most chargers, like the nitecores and the chinese-made enb-brand usb chargers all have cut-offs at 4.2v, after which it'll trickle charge around 4.2v to 4.25v (on average).
If you overcharge too often, your battery life may significantly decrease, it won't hold much of a charge, and may at some point never charge again. I've done that before, thankfully to a cheap AW cell and not an expensive sony, so learn from me and don't overcharge and over-discharge your batteries.
Also, you shouldn't leave a battery in a charger overnight. You should be around and awake when it's finished charging and remove it ASAP.
Hello and welcome to the forum srism. Glad to have you here!
Good advise you are getting here.
Good advise you are getting here.
Im glad someone asked this cause I have the same question. Not to thread jack or anything but I have the same problem, my sony vtc5 is up to 4.21, I know its not a drastic difference but none of them have ever done this. I have a pretty decent charger that isnt supposed to do this, its an Xstar VP1. And I sub ohm so id prefer to know if its safe or should I just replace it? Thanks for any advice in advance.
4.21v is fine. In fact, my nitecore, with it's regulated circuitry, will generally finish actual charging at around 4.15v, and trickle charge to 4.22, let it kinda just sit and fall all the way back to just under 4.2, and then trickle charge it all the way back up again. This is normal and within safe boundaries. Sony vtc5's are solid pieces. No need to replace them. And plus, since all the Sony batteries are discontinued, why not keep them as museum pieces?
How accurate is your multimeter? 4.29 is only 1.9% over 4.20 - could be within the accuracy/repeatablilty of a cheap multimenter (not saying yours is, but just throwing in another variable).
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