ESAMACT 8.4V 6400mAh Li-ion Rechargeable Battery Pack 18650 with DC & USB Ports + EU Plug Charger for Cycling LED Lamp Knives and Tools Gain: >65dB

Gain: >65dB

Stepper motor experiment

you will be able to perform a complete computer diagnostic car and even to correct minor faults without resorting to service stations

the blue light will off after fully charged

Metallic Gripper

ESAMACT 8.4V 6400mAh Li-ion Rechargeable Battery Pack 18650 with DC & USB Ports + EU Plug Charger for Cycling LED Lamp Knives and Tools Gain: >65dBFeature: 100% Brand new High quality Suitable for 8. 4V Head Lamp Bike Lamp solarstorm x2 , solarstorm x3 ect Pouch bag can be tied on waist belt or bicycle handlebar Battery capacity: 6400mAh Voltage: 8. 4V Use time: 2 4 hours Charging time: 4 5 hours Size: 65mmx35mm Connector : USB + DC Charger Specification : Input: AC 100 ~ 240V, 50 ~ 60Hz Output: DC 8. 4V, 1A Color: Black LED indication for Power On Model EU Plug Model Quantity 1 set Material