Off topic: lithium-ion ham radio battery question

[donb108]

I have a Yeasu handheld Ham radio that I bought three years ago for my wife. Shortly after getting it, we had a hurricane, put the radio on a shelf, and forgot about it. Now, three years later, I tried recharging it, but the charger doesn't do anything; apparently the lithium-ion battery is dead.

I checked with Yeasu tech support, but they say it un-usable. Is there anything I can do to revive it?

 

[DIYrich]

Replace the battery?

 

[donb108]

I found this explaination on Quora. Sounds like it may be a bad idea to attempt recharging.

Is it possible to revive a dead li-ion battery?

Answer (1 of 7): No. Li-ion batteries that go below 2.5 or so volts are dead and cannot usually be charged or revived to a useful capacity. Ones that measure 0 volts at the terminal are internally shorted (I have found this) or the protection circuit is bad (possible but I’ve not found this.) Be...

www.quora.com

Related
How do you charge a completely dead lithium ion battery?
Once a lithium ion cell goes below 2 to 2.5 volts for anything more than a short time there are electrochemical changes. One is that the copper anode collector begins to dissolve into solution. When you recharge it plates back but quickly forms dendrites which breach the separator. This causes small shorts which cause heat and can put the cell into thermal runaway. Unless you have seen cells go into thermal runaway you really can’t appreciate the violence with which this happens. Think road flares on steroids. If this happens inside your house it can very easily burn your house down; this has happened MANY times! This is why certified battery packs will not allow recharge if the cells go too low in voltage. Bypassing this and charging anyway is an extremely risky endeavor. Please just get a new battery pack, it really isn’t worth the danger.