【Upgrade 25800mAh Power Bank】This QTshinee 25800mAh Power Banks have been updated with the market leading technology, has Larger capacity and lighter weight. Compatible with all the phones and tablets, it’s powerful enough to charge your phone about 8 times. You can take it with you on the plane! 【Upgraded With Safer Protection System】Built-in safeguards protect your devices against short circuit, excessive current, overheating, and overcharging. The battery pack will shut off automatically in the event of a short circuit or overload. 【More Advanced High Speed Charging】Dual USB ports, combined with 5 V / 2.1 A and 5 V / 1A output, this portable charger can charge two devices at the same time, quickly providing enough power for iOS and Android Phones and More. 【Power Pack with 4 LED Status Indicator】The 4 led lights clearly remind you the remaining power of the your power pack, no more guessing whether need to charge it or not. 【Extended 2 YEAR AFTERSALES SERVICE】: The charger bank uses high quality A+ POLYMER LITHIUM BATTERY to extend the using life. And it comes with a two-year aftersales service. If you have any problem please feel free to contact us, we offer 24 hours customers service.