Lizone Extra Pro 40000mAh Laptop Portable External Battery Power Bank for IBM Lenovo ThinkPad IdeaPad Yoga Pro Flex Helix Carbon Ultrabook; USB Charger for Tablet or smartphones (40000mAh) Charge Lenovo 14 inch approach 2 times, Lenovo 15 inch approach 1.6 times, Lenovo 17 inch 1.2 times; iPad Mini 1 approach 5 times; iPhone approach 15 times; Samsung Galaxy S4 approach 10 times. Highest efficiency energy efficiency rate 10% above the previous generation. No expense spared constructed with grade A Samsung cells and premium chips, up 600 recharge cycles over the life of the battery, Aluminum Unibody, 18 Months Warranty. Lizone Technology enables full speed laptop DC port (up to 4.5A 90W) and USB port charge (up to 2.1A) and universal compatibility. Highest efficiency energy efficiency rate 10% above the previous generation. Charge with speed full speed charge multiple devices simultaneously with the 6.6A total output, Broadly compatible with both USB charging port and a DC Output laptop port, charge a wider range of tech devices. Extra Pro Laptop External Battery Power Bank Charger for Lenovo ThinkPad Carbon Ultrabook IdeaPad Helix... Series Laptop Notebook Extra Pro Laptop External Battery Power Bank Charger for Lenovo ThinkPad T60 T60P T61 T410 T410i T420 T500 T510 T510i T520 T520i X200 X200s X201 X201i X201s X300 X301 R61 R61e R61i R500 R500 R61 R61e R61i Z60m Z61e Z61m Z61p Z60t Z61t SL300 SL400 SL500 E40 E50 E420 SL300 SL400 SL500 E40 E50 E420 E520 L410 L412 L420 L421 L510 L512 L520 SL410 SL410k SL510 W500 W510 W520 Series Laptop Notebook (Replace 45W 65W 90W Lenovo Original Ac Adapter and battery)