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Backup Power Case for iphone 4 / external battery
Backup Power Case for iphone 4
5 colours
iphone more than black and white
1. Bottons
+ : press this button to turn the volume up
_ : press this button to turn the volume down
:Press this button to switch the volume between iphone4s/4 and the sound equipment
N : Press this button for 3 seconds when the indicator light flickers from left to right for one time, which indicates that this product begins charging iphone4s/4 . Then press this button for 3 seconds one more time when the indicator light flickers form right to left , which indicates that charging is off. Besides , You can also know the battery capacity by pressing this button .
2. Charging
This product can be charged by connected with the special external charger via USB port .
(When charging , if the first indicator light at the left flickers , it indicates that the battery is lower than 25% of the full battery. When the first indicator light turns from flickering to the normal , it means that the battery has reached 25% of the full battery . When the second indicator light turns from flickering to the normal , it indicates that it has completeds 50% charging ; And the like , when the fourth indicator light turns from flickering to the normal , it indicateds battery full )
( iphone4s/4 is also being charged while charging this product through the external charger )
3. The indication of electric quantity detection when discharging
(press N , one bright indicator light indicates that the electric quantity is 25%; two bright indicator lights indicate that the electric quantity is 50%;three bright indicator lights indicate that the electric quantity is 75%,and if four indicator lights are all bright , it indicates battery full . )
4. Type of battery cells
Polymer Lithium lon battery cell , standard voltage : 3.7v
Capacity:1800mAh
Output volafe: DC5V+ 0.1V
Output current : ≤700mA
Input voltage: DC5V+ 0.2V
Input current : ≤500mA0
Charging interval: 3~5h
Working temperature: -10°C~50°C
Storage temperature: -20°C~65°C