10 pcs per package. 3V Lithium battery. Use for watch,camera,toy,calculator,PDA,mini flashlight,laser pen and other consumer electronic devices. Free Bluecell cable tie.
Two independent charging channels for individual charging and detection. Constant current and constant voltage charging mode. Reverse polarity protection. It automatically terminates charging and the LED flashes red when the polarity is reversely connected Li-Ion 18650 cylindrical rechargeable batteries with Internal Voltage protection PCB!. Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.
Can Be Used Immediately Out of the Pack. Holds 75% Charge for Up To 3 Years. Costs About 4 Cents per Recharge. Very Slow Discharge Rate. Environmentally Friendly.