how long to charge a lithium-ion battery?

[ixfd64]

My "Spyder I Pro" laser suddenly became very dim, and I've been using it a lot lately, so I figured that the battery is dead. Does anyone know how long does it take to charge a (No. 18650) lithium-ion battery?

I'm using the charger that was included with the laser, by the way.

 

[john_lawson]

sometimes 6 hours if batt is completly dead

 

[Things]

sometimes 6 hours if batt is completly dead

Lithium Ion batteries should never be completely dead, almost all of them have under-voltage protection, which will cut the power if the charge gets too low. Fully discharging Lithium Ion batteries reduces their lifetime and capacity dramatically.

 

[Cyparagon]

Yeah, if it's completely dead, you'll never charge it again.

 

[Illuminum3415]

Duration of charge has do do with the capacity of the lithium battery and the rate of charge
There is no standardized time to charge without varying charge current to adapt to every type of lithium battery

More info would be helpful

 

[laze_doctor]

A lot of info here.. apparently typical charge time for most chargers is around 3hrs.

Charging lithium-ion batteries