How To Rejuvenate A Lithium Ion Battery. Check out my newest 18650 salvage video. If a lithium battery is completely discharged then it is ruined.
Set your multimeter to 10A and connect it in series with charger and battery When you connect it to the battery an it should draw 100-200mA Thats sign of dead battery Set your psu to 14v or connect your. Once the battery hits 34V it goes inactive and practically dead at 30V. This may happen due to overuse or leaving the battery for too long on the charger.
For example using an impact wrench for too long can drain the battery voltage so low that the charger would fail to recognize the battery for charging.
This is what makes getting these batteries cheap because people tend to toss old electronics that get broken or just stop working but leave the battery inside. Bring a dead battery back to life by freezing. Li-ion batteries typically have a maximum voltage of about 42V and at moderation are around 37V. When a lithium-ion battery is over-drained its protection circuit turns it off making it dysfunctional to be used or recharged by the charger.
