Ordered a NS73V2 from NealsGadget, and the LS2170HP cell came in at 0.6-0.7V. There was a plastic/cardboard separator between the negative terminal and the tailcap contact inside.
Is this normal? Should I attempt to charge this cell?
Ordered a NS73V2 from NealsGadget, and the LS2170HP cell came in at 0.6-0.7V. There was a plastic/cardboard separator between the negative terminal and the tailcap contact inside.
Is this normal? Should I attempt to charge this cell?
It’s way too low to recharge. Batteries are usually delivered in the 3.4v to 3.8v range. Contact Neal and try to get him to send you another battery or credit you for the $10 he charged for the battery.
Recycle the battery after you contact Neil because he may want you to take a pic of the battery and its voltage (had to do this with a battery Sofirn sent me).
That store again, smh, trash the battery, it may vent on you, not worth the risk
It depends of the chemistry of the cell and how long it was at .6vdc. It could be perfectly fine to recharge outside, but I would return it on principle.
Chris
Absolutely not. Voltage is always confusing since we’ve all been brought up thinking batteries go from “full” to “empty”. A cell with low voltage like this is like driving a car with grossly underinflated tyres- sure there’s technically some air inside but far less than they need to do their job.
Operating voltage is between c.2.5V and 4.2V.
Contact Neal, get a refund on the cell, then recycle it.
I wouldn’t attempt a recharge from 0.6v. It could have very dangerous results. Most would say anything 2.0v and below is considered a discard/dispose. 2.5v would be the lowest I would feel safe trying to recharge at low rate. Even then the internal chemistry is likely negatively affected already.
This would be absolutely unacceptable, and would demand a refund.
Funny, because all common LiIon cells I known are actually rated to be discharged to 2.5V.
So I wouldn’t exactly call it a dangerous low voltage
Depending on the use. Forgotten I put them in a long time ago, or I know that the light was fading but I need it here and and now, I would not go lower than 2.0V resp. 1.5V. And only with my trusted 30Q’s, because these can survive a serious beating.
I didn’t say it was dangerous, I said it was where I felt safe to try recharge from.
And anyway you shouldn’t regularly let it get to 2.5v, that’s not good for the long term health.
I have reported your issue to Neal.
Sony and Panasonic say that 1.0V is the “do not recharge” voltage for liion cells.
The cell being at such a low voltage is an indication that there is a problem with the cell.
Update: Neal sent me a new battery that arrived safely at 3.6V. He also included a Convoy S21A with the SST40 emitter