For Bluetooth Wireless Keyboard

404090 2000mAh 3.7v LiPo Lithium Polymer Battery

Name:404090 2000mAh 
Size:4/40/90mm(H*W*L)
Capacity:2000mAh
Rated voltage:3.7V
Operating Temperature:-20°C-60°C
Charging temperature: 0°C-50°C
Battery Type:Polymer Battery
Chemistry type:lithium polymer battery
Max Charge Current: 1C/1.2A
Continuous Charge Current: 0.5C/0.15A
Max Discharge Current: 1C/1.2A
Continuous Discharge Current 0.5C/0.15A
Discharge voltage: 2.75V
Charging voltage: 4.2V
Place of origin: China
Protection function: overcharge, overdischarge, overcurrent, short circuit

3766125 5000mAh 3.7v LiPo Lithium Polymer Battery

Name:3766125 5000mAh
Size:3.7/66/125mm(H*W*L)
Capacity:5000mAh
Rated voltage:3.7V
Operating Temperature:-20°C-50°C
Charging temperature: 0°C-50°C
Battery Type:Polymer Battery
Chemistry type:lithium polymer battery
Max Charge Current: 1C/1.2A
Continuous Charge Current: 0.5C/0.15A
Max Discharge Current: 1C/1.2A
Continuous Discharge Current 0.5C/0.15A
Discharge voltage: 2.75V
Charging voltage: 4.2V
Place of origin: China
Protection function: overcharge, overdischarge, overcurrent, short circuit

Usage:smart watch,electronic toy gun,electric inflatable pump,smart bin,bluetooth speaker,fingerprint lock,smart audio,electric hair cutter,smart bracelet,dog trainer,insect and rodent repellent,camping light,floor sweeping robot,electric toothbrush,pet water dispenser,electric razor,handheld fan,most keyboards.