?- Color: Blue  - Type: Li- ion  - Model: 18650  - Actual Capacity: 4000mAh  - Battery Voltage: 7.4V  - Rechargeable: Yes  - Rechargeable Times: 500  - PCB Protected Board: Yes  - Plug: 5.5 x 2.5  - Application: for bike light  - Package includes:   - 1 x Battery pack (38cm cable)<img src="//112.74.112.28/down/products/610172/610172_000.jpg">