Have an 18350, AW IMR, 700mah battery. Accidentally let it drain to 2.73V. Is it toast?
Did I kill my battery?
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How to Prolong Lithium-based Batteries - Battery University
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Unless its smoking or on fire
You have 1600 posts...cmon man!
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I was too lazy to Google.. though come to think of it, it took more effort to post this thread than it did to look it up.
Turns out it's good down to 2.5V. ha.. lucky!
Turns out it's good down to 2.5V. ha.. lucky!
UltraFire WF-139? It should.
Though I just measured the battery and it's reading 4.3V. Not sure if I want to keep using this charger now that I know it's overcharging.
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Depending on the charger, it will either detect low voltage - and then do absolutely nothing. Or it will apply very low current to the battery until it can raise it back over 2.7 volts and only then begin a normal charge cycle. I know the Xtar chargers are capable of doing this. (blank)Fires? - no idea.
All Xtar chargers are 20% off right now at RTD Vapor. You would be doing yourself a big favor even getting the Xtar WPII 2 on sale now for $15.96 Code ECF5 gets you an additional 5% off on top of that.
All Xtar chargers are 20% off right now at RTD Vapor. You would be doing yourself a big favor even getting the Xtar WPII 2 on sale now for $15.96 Code ECF5 gets you an additional 5% off on top of that.
According to the specs of the charger I have, it does trickle charge when the voltage is under 2.7... I'm just curious if letting it charge my batteries to 4.3V is going to shorten their life. It should be shutting off at 4.2V.
Check out table #4 on this page.
At 4.3 V you are getting 10% more charge into the batteries and losing 1/2 their life. I try to take my batteries off charge a bit early. You'll see why from that table.
That's why I like the Xtar's I have. If anything they come off the WPII 2 charger "less than perfect" at 4.18 to 4.19 volts. The VP1 with the display is hitting dead on at 4.2 volts and stops right there. In under a minute the battery voltage has backed down to 4.18 volts.
Yeah, I had a look at that chart, and also read some posts on a forum about the charger I have. All this time, I had no idea it was overcharging my batteries.
Thanks for the link to Xtar. I'll have to order one when I have a bit of spare cash.
Thanks for the link to Xtar. I'll have to order one when I have a bit of spare cash.
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