QD 188-ALT 12v/19v/24v 85W Portable Laptop Power Bank, 18650 Battery Charger Emergency Power Supply For USB Mobile Phone Laptop Computer External Rechargeable Laptop Battery Pack Available from Amazon in June 0v-24v super wide voltage adjustable. Support all electronic products. Max 85W Power Work as 18650 battery charger as well as external power bank. With LCD monitor, display voltage and current, battery percentage, voltage setting etc. Unit takes 1-8 replaceable UNPROTECTED 18650 li-ion batteries(Flat Head) to power. You can get more than 20000mAh high capacity max power (Battery is NOT included) Special Material Cover and Compact Design. Good Quality. Size: 220mm * 89 mm * 26mm