Packing	Made of 4 pcs 18650, 2000mAh Li-Ion cells, packed in 2S2P
Voltage	Voltage: 7.4 V (working) 8.4 V ( peak) 5.0 V ( cut-off)
Capacity	4000 mAh
Protection	Two PCB (IC) (5A limited) installed with the battery pack and protects the battery from Overcharge (> 8.4 V) Overdischarge ( < 5.0 V) Over drain ( > 5 Amp) Short circuits Two 2A polyswitch installed to limit max. discharging current and to protect wrong polority
Prewired	5" cable with a female universal connector
Max. Charging Rate	2 A
Max. Discharging Rate	4.2 Amp limited by polyswitch
Dimensions	1.35" (W) x 1.35" (H) x 2.5" (L)
Weight	7.0 oz
Smart Tips	Need Polymer Li-Ion pack? Please click here to order seperately. You may choose our Smart 7.4V Li-Ion Battery Charger (1.2A, UL listed) + two pin male universal plug to recharge this battery pack. The estimated charging time is 5 hours You can choose our detachable universal connectors with 8 plug tips to fit to the most of device. If you connect two of these modules in parallel, you can build a 7.4 V 8 Ah Battery pack with a 8 Amp max. discharge rate.
Applications:	Perfect for super-bright bike headlight of 6 -10W. Can replace any 6V NiMH battery or 7.2V Li-Ion Light@ Motion: Commutre and Solo Logic Niterider: Headtrip Nightpro: Elite, torch, KAMIKAZE Cygolite: Rover Viewpoint Burning time: 6W Halegon: 5.7 hrs 10W Halogen 3.5hrs Please don't throw away the connector in your old device system. You may need the connector link to our battery. If our connector can not fit to your device, you may remove old connector and change it to our universal connector
Advantages	No memory effect and longer storage life than NiMH battery Totally environmental friendly. 100% recyclable Light weight and higher energy density than any rechargeable battery. Perfect for all types of RC devices, especially RC-airplane.
Warning	This Battery is not good for > 10 W halogen light due to PCB can not accept high initial current. Not good for higher 4A drain's application Li-Ion Battery may explode if charging or discharging improperly. User must have knowledge on how to charge and discharge Li-Ion battery before making Li-Ion Battery Pack. For safety warning please see the click here