This 3500mAh 5V Extra Power for Samsung Galaxy S3 I9300 is a good replacement for your former malfunctioned one. Made of high quality material， the outer shell is high in strength and sturdy in structure to make it great in abrasion， bump and impact resistance. Besides， the inner electronic chip is precise to ensure high and stable performance. Built-in smart chip can protect it from damaging caused by short circuit， over-charging and overheat. What is more， it is portable and convenient to carry as its slim and lightweight design. With high power capacity and rechargeable design， it is environment-friendly and cost-effective. What are you waiting for?                                    Features            Li-polymer battery type is rechargeable and environment-friendly3500mAh large power capacity ensures long talk time and standby timePrecise circuit board prevents overcharging， short circuit and generating heatLight weight size， portable to carryStable power output and input Supply instant power to charge your device anytime， anywhereTightly touch with cell phone inside electronic chips for fine conductivity and quick charge                                                             Specifications             Capacity     3500 mAh     <br> Battery Type     Li-polymer     <br> The Input Voltage     DC 5V    <br> The Output Voltage     DC 5V    <br> The Output Current     750mAh    <br> The Input Current     400 - 500mAh    <br> Charging Time     4h     <br> Dimensions     (5.91 x 2.99 x 0.67)" / (15 x 7.6 x 1.7)cm (L x W x H)    <br> Weight     3.35oz / 95g     <br> Color     Black    <br> Applicable Models     Samsung Galaxy S3 I9300    <br> Product Model     Power Bank     <br>                                                             Package Includes            1 x Extra Power<br>