How Many Times Can You Charge A 18650 Battery. 18650 is a specification for a size of cell 18mm wide and 65mm long. Due to large capacity long life time high voltage good high temperature performance and other features UltraFire 18650 rechargeable li-ion batteries are widely accepted by customers.
However lets take a typical Lithium-Ion 18650 that you might find in a laptop pac. With standard 18650s the max voltage is 42 V. For a 18650 2500mAh25Ah battery with a device that draws 500mA05A you have.
I was using a set of Ultrafires 18650 for almost 10 months and finally had one start to drop off faster then the others.
18650 is a specification for a size of cell 18mm wide and 65mm long. For example the capacity of 18650 battery is generally 18002600mAh. So there is no id. Trickle charging will take a long time to replenish a depleted battery but it can be done safely and it usually will do no damage to the battery you are charging.
