Timeline for Is it normal for a lithium ion battery to read with a very low voltage on a multimeter?
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 11, 2019 at 7:35 | comment | added | winny | le_top 1kohm should be a very safe value, but 1 ohm would be a very dangerous value. Somewhere is between would be suitable if you observe the charging and stop if anything starts swelling or venting. | |
| Jan 10, 2019 at 22:37 | comment | added | le_top | @winny I did not want to give that hint away to avoid that anybody with insufficient skills would take a badly chosen resistor. I've had low mV readings with batteries that I was able to recover, including the Samsung Tab III that had been stored away for a pretty long time. | |
| Jan 10, 2019 at 13:15 | comment | added | Yoshi Walsh | Just to provide an update for everyone, I got a replacement battery and now my Vita works. Also, the replacement battery did read with a voltage close to the nominal one, so the answer to my question is that it's NOT normal for a Li-ion battery to read at such a low voltage. Thanks for your help! | |
| Jan 10, 2019 at 13:14 | vote | accept | Yoshi Walsh | ||
| Jan 10, 2019 at 10:00 | comment | added | winny | @JoshuaWalsh A resistor in series will give you a poor mans current limit. | |
| Jan 10, 2019 at 9:59 | history | edited | winny | CC BY-SA 4.0 |
deleted 9 characters in body
|
| Jan 9, 2019 at 14:49 | history | edited | le_top | CC BY-SA 4.0 |
Small improvement to improve readability
|
| Jan 4, 2019 at 9:28 | comment | added | le_top | mV reading of course ;-). | |
| Jan 4, 2019 at 0:17 | comment | added | Yoshi Walsh | @le_top Thanks for the advice. I don't have a current limited power supply, so I'll probably just buy a replacement battery. I was mostly interested in understanding if the 20mA reading definitely represents a discharged battery, or if my measurement was somehow misleading. Based on your answer I'm now confident that it does, thank you. | |
| Jan 3, 2019 at 21:24 | history | edited | le_top | CC BY-SA 4.0 |
Added extra warning and example.
|
| Jan 3, 2019 at 21:14 | history | edited | le_top | CC BY-SA 4.0 |
Added extra warning and example.
|
| Jan 3, 2019 at 21:02 | comment | added | le_top | Yes what @YetAnotherRandomUser suggests is VERY DANGEROUS because the extra battery will charge the depleted battery at uncontrolled currents. What I suggest is to keep the current low enough and to make sure that charging is effective and abandon when the voltage does not increase. | |
| Jan 3, 2019 at 17:12 | comment | added | wizzwizz4 | @Finbarr Needs more bold. What YetAnotherRandomUser suggests is dangerous. | |
| Jan 3, 2019 at 15:05 | comment | added | Finbarr | @YetAnotherRandomUser This is a very dangerous way to proceed for both automotive and lithium batteries, which can deliver very high currents when fully charged. | |
| Jan 3, 2019 at 14:15 | comment | added | YetAnotherRandomUser | With an automotive battery, you can do something similar to this by putting a charged battery in parallel and hooking them up to a charger. The parallel battery fools the charger, and the depleted battery accept the juice. I use this method to resuscitate AGM batteries. Would it work for lithium chemistry, or would that be too much? | |
| Jan 3, 2019 at 13:51 | history | edited | le_top | CC BY-SA 4.0 |
Corrected typo
|
| Jan 3, 2019 at 13:37 | history | edited | le_top | CC BY-SA 4.0 |
Another improvement in the wording.
|
| Jan 3, 2019 at 12:33 | history | answered | le_top | CC BY-SA 4.0 |