ON-THE-WAY4PCS-UltraFire-37V-Rechargeable-Lithium-Battery-18650-4000mah--1PCS-Dual-Travel-charger-for-18650-Ba

Battery
Features:
1 Built-in PCB protection board
2 High quality and durable
3 High energy density, long life span
4 Provides excellent continuous power sources to your device
Specifications:
1. Battery Type:18650 battery
2. Voltage: 3.7v 
3. Capacity: 4000mAh
4. Material: Li-ion Battery
5 Charge Time: about 6~8hours
6 Rechargeable Times: about 500~700
7 Dimensions: 6.5 x 1.7 cm(L x Dia)
8 Weight: 180g

Battery Charger
Features:
1 It is with high efficiency and reliability!
2 High Quality 2 Slots Charger for 18650 Battery
3 Can try two battery at the same time. LED charging status indicatior.
4 Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock.
Specification:
1 Output : 4.2V-600mAH
2 Input: AC 100V - 240V 50 / 60Hz Max150mA
3 Plug: US
4 Charge complete within 5-6hrs
5 Compatible with 18650 batteries

Package includes:
4 x UltraFire 3.7v 18650 Battery 4000mah
1x 18650 battery charger

Warming Tips:
1.Don't not insert batteries with (+)and (-) reversed
2.Do not disassemble ,dispose in fire ,heat or shot circuit
3.Don not submerge the Battery in water .