03-11-2022, 02:05 AM
Since from your OP, you have had the back off, measure the battery voltage
It should be in the range 3.6V to 4.2V, it likely will be lower
Gently charge battery, 100ma @4.2V until battery reaches 3.6+V
Maybe a old phone charger (5V) and 5-10 ohm resistor
Old in that it has low ma output, the specs are always on the label
Use the cable off, say a dead mouse, the wires inside are always colour coded,
i've never seen them wrong, but you might check
OR
try the 1/2 hour charge, unplug,replug another 1/2 hour and so on
The timer resets with each power supply activation
This, BTW is normal for lithium chargers
It should be in the range 3.6V to 4.2V, it likely will be lower
Gently charge battery, 100ma @4.2V until battery reaches 3.6+V
Maybe a old phone charger (5V) and 5-10 ohm resistor
Old in that it has low ma output, the specs are always on the label
Use the cable off, say a dead mouse, the wires inside are always colour coded,
i've never seen them wrong, but you might check
OR
try the 1/2 hour charge, unplug,replug another 1/2 hour and so on
The timer resets with each power supply activation
This, BTW is normal for lithium chargers
