Battery for Ploom TECH with indicator function.Prevents sudden battery exhaustion and the LED lights up red when the remaining charge is about 20% or less.Approximately 50 times suction notification of capsule replacement. (Blue LED blinks)Able to suck about 250 times with one charge.*The number of times displayed depends on the specifications and conditions.The USB charger has an LED indicator that indicates when charging is in progress or when charging is complete.Lights red when charging and green when charging is complete.Item number KT-202;Power supply Lithium polymer battery;Battery capacity 210mAh;Operating temperature range 0 to 35C (no condensation);Body size/weight 9.5W x 70H x 9.5D(mm) / 15g;Input voltage DC5V;Output voltage DC4.2V;Output current 190mA;Charging time about 90 minutes;Body size/weight 18W x 48H x 11D(mm) / 8g