10000mAh Portable Charger, ROMOSS Universal Power Bank, Dual Output External Battery Packs Compact Slim Thin Compatible with Cellphones, iPad, Samsung and More, White FAST SELF-CHARGING TECHNOLOGY - Automatically adjust the current and voltage, speeding up the charging efficiency up to 90%. With 5V 2.1A input, it can get fully charged in just 6.5 hours, 50% faster than common external battery in 13 -14 hours. HIGH CAPACITY - Smart Dual USB output (5V/1A and 5V/2.1A) can charge your smartphone and tablet at the same time. The power conversion rate can reach up to 85%. 10000mAh capacity can charge your iPhone 6s 4.9 times, Samsung Galaxy S7 Edge 2.3 times or an iPad Mini 1.4 times before you need to recharge the power bank. SAFETY PROTECTION - Built-in intelligent safety system ensures complete protection for you and your devices, including over-heat, over-charge, over-current, over-discharge and short-circuit protection. COMPACT DESIGN - Dust-proof and fire-retardant alloy plastic shell with portable size, easy to hold in your hand and carry in your pocket or purse. 4 LED lights indicates battery level. Enter dormant mode automatically after 1 minute when unused. WHAT YOU GET - ROMOSS 10000mAh power bank, Micro USB cable, user guide, 12-month warranty and friendly customer service.