3x dead battery at 1 volt , no charging (fix it)

Overview

Attempted to revive 18650 batteries with low voltage (1.1V) by boosting their voltage to allow charging.

Parts

- 18650 batteries (one dead at 1.1V, one charged)

Steps

1. Connected a charged battery + to +, - to - with the dead battery for about 40 seconds.
2. Checked voltage of the dead battery after connection.
3. Charged the battery using a charger.
4. Conducted a load test on the battery post-charge.

Notes

- The voltage boost allowed the charger to engage with the dead battery.
- Post-charge, the battery showed improved performance.
- Load test results indicated the battery was "super strong."
- Batteries showing 1.1V could be revived, but those showing 0V did not work.

Summary

Reviving 18650 batteries with low voltage (1.1V) by temporarily boosting their voltage with a charged battery allowed successful charging and restored functionality.

Key Points

- Boosting voltage of a dead 18650 battery can enable it to be charged.
- A charged battery can be used to temporarily boost the voltage of a dead battery.
- Batteries with 1.1V can potentially be revived, but those at 0V cannot.