Rechargeable battery Li-Ion 9V 650mAh 6F22, Doublepow, USB power supply

Practical rechargeable battery of size 6F22 with integrated charger directly in the battery body. Just connect a 5V power supply with a USB MICRO terminal. Suitable for appliances that are not too sensitive to a drop in supply voltage, as the nominal voltage of the battery is 8.4V in a fully charged state, not 9V, as stated on the packaging. Technical parameters: - type: Doublepow 6F22 - nominal voltage: 8.4V - voltage in a discharged state: 6.5V - declared capacity: 650mAh - measured guaranteed capacity: 500mAh - discharge current: permanently 2C (1A), briefly up to 4C (2A) - charging: USB 5V/1A - LED indication: red-charging, green-charged