battery extender case for iphone 4

battery extender case for iphone 4 1.Capacity: 1900mAh 2.Device Protector 3.battery extender case for iphone 4

Introductions:external Backup Battery Case for iPhone4 ,Micro-USB for charging and sync,power check and indication with button and 4 LED, Surface Treatment by paint rubber, Cell Type is lithium battery,Capacity is 1900mAh.

feature:1.Power Switch:ON/OFF.built-in lithium battery.2.It also can be protector of iphone4.3.Leds on back side for power checking&indication.4.Using iphone 4 is available when it is being charged.You needn't take it out .5.How to Put Your Iphone4 on Charge:First of all,pls turn on the switch,When lithium battery is full of power,pls insert iphone4,then turn on the switch on back side,in that case it is charging.When the lithium battery is dead,pls insert USB cable into it,connect other port  with computer USB port.Now it is able to charge for lithium batter,after it is full of power,pls operate as above mention.

specificaton:Output V: DC 5V Output C: ≤700mA(0.7A) Input V: 5V Input C: ≤1000mA(1A) Contain: 7WH(1900mAh) Charging time: 4 to 6hs Working temperature: -10°C to 40°C Storage temperature: -20°C to +50°C Standby time: >380hs Call time: over 6.5hs at 3G Surfing time: over 6.5hs at 3G/over 7hs at Wi-Fi Music playing: over 28hs Video playing: Over 8hs Packaging & Deliveryproduct Size: 126 x 63 x 15mm Net Weight: 58g package size:140*98*25mm(Blister Packing )package weight:121.5gpackage size:133*90*22mm(Crystal box)package weight:150gnotice:1.please use original power adaptor to charge 2.it is normal phenomenon that product gets hot when charging3.please keep surrounding well ventilated to ensure heat abstracted normally when charing ,otherwise,it might accelerate aging of the device,thereby reducing charging efficienecy and life of battery.do not put it in the fire and heating source ,do not leave it directly in the sun or rain;aviod colliding.4.take it carefully to avoid dropping.

battery extender case for iphone 4