DIY USB Power Bank 3*18650 Battery Charger Box Shell Case For iPhone Samsung HTC Smartphone Description:Features:Compact， practical， wearable， portableFree welding assembly (about 1 minute installed a finished product)Synchronous rectification schemeAnodized aluminum enclosure Product Parameters:Battery Type: 3 sections 18650Input: DC 5V， 1.0AOutput: DC 5V， 1.0ARated capacity: 3.7V \/ 7800mAhLoad testing automatic detectionLoad insert and pull outDigital tube power display: 25%， 50%， 50%， 100%Supports input voltage protection， input the anti-anti-protection， output over-current protection， output over-voltage protection， output short circuit protection， battery overcharge and over-discharge protection，batteries PTC protection， charge \/ discharge temperature protection Specification:Material: compression wearable metal caseProcess: scratch abrasion resistant oxidation process (Matte)Color: red， blue， silver， goldShell size: 92 * 65 * 22 mm Note :1， This is a mobile power suite， only the shell and circuit board， not including batteries， battery are required to buy separately. You can buy it at local store.2， The battery is 3.7 V 18650 flat battery.3， Different sizes， different brands of batteries can not be mixed. Package includes:1 X DIY Battery Case More detail: