The rechargeable Li-ion 9V block with its own charging electronics can be recharged via Micro-USB and is equipped with a Protection/PCB, short circuit, overcharge, and deep discharge protection. You can use the Li-ion battery just like other 7.4V to 9V batteries in almost any device, without the usual self-discharge rates. To charge it, you only need a USB charging cable and a 5V USB power supply of 0.5A to 3A or a 5V USB computer connection (the required Micro-USB charging cable is not included). It can be charged through the integrated Micro-USB charging port, but the necessary Micro-USB charging cable is not included in the delivery.

9V block Li-ion battery ReadyToUse PCB protected. The lithium-ion technology impresses with high energy density, high capacities, and low self-discharge.

Type: 9V - Block 6LR61 6F22
Nominal voltage: 7.4 volts
Charging cutoff voltage: 8.4V ± 0.3V
Discharge cutoff voltage: 5.4V
Capacity Type./Min.: 550mAh, 490mAh
Charging current / charging time at 110mA: 0.32mA - 110mA / approx. 1.5 hours
Protection circuit: Integrated
Chemical system: Lithium-ion (Li-ion)
Dimensions approx. (L x W x H): 47.5 ± 0.5 x 26 ± 0.2 x 17 ± 0.3 mm
Weight: 28 grams, image similar, may vary in color etc. depending on availability.

Safety notes: Charging lithium-ion batteries requires a special charger that charges the batteries according to a specific charging procedure.