ROMOSS Sense 6P 20000mAh Power Bank Portable External Battery with LED Display Dual USB Fast Charger for iphone7 iphone7plus

ROMOSS Sense 6P 20000mAh Power Bank Portable External Battery with LED Display Dual USB Fast Charger for iphone7 iphone7plus

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List price:
US $37.99
Price:
US $24.69

Product Description

Specifications: Mobile power storage, portable for both indoor and outdoor use. Tested and excellent quality ensured. Original, 20000mAh, rechargeable from the USB port. Clear LCD display shows the available power capacity and charging status. Perfect power supply for business trip, travel, field work and so on. Fit for cellphone, MP3, PDA, console and other digital products. USB port, plug and play, charge your device whenever and wherever. Exquisite and durable, special for several types of digital devices in your family. Portable design, convenient to carry and use. Specification: Brand: ROMOSS Model: Sense 6P Color: White ​Weight:445g Material: ABS, PVC Type: Portable Mobile Powers Input: DC 5V 2.1A Output: DC 5V 2.1A / DC 5V 1A Charging time: 6.5 hours with 2.1A input; 13.5 hours with 1A input Compatible with: Mobile Phones and tablet PCs Capacity (mAh): Cell Capacity: 20000mAh Special Functions: LCD Digital Display, Multi-Output ​ TIPS: In the course of our sales, we found that some customers may not understand the knowledge of the battery,then gave us a bad evaluation So I would like to explain in this way: First we should know two things: voltage and current. Use the formula: power = voltage x current (Batteries of power banks are 3.7V output) Every power bank has a conversion rate. Higher end power banks possess around 90% conversion rate. Power bank conversion rate is also related to batteries used in the production. Lithium-polymer rechargeable batteries have a work output conversion rate that is generally 85% -95%, and lithium-ion (18650) battery possesses an output conversion rate between 75% – 90%. To calculate conversion rate with the real capacity and charging times you do the following: Smartphone charging is dynamic of around 500MA-1000MA with the voltage at 5V. If the battery power is marked 4000mAh, then the power of a 4000mAh power bank should be 4 * 3.7 = 14.8W, calculate by our polymer batteries conversion rate of 80%, the real total power supply for charging can be 11.8W. Take a 1500mA smart phone for example, the demand power is 3.7*1.5 = 5.55W, then it can charge the phone two times. So if you want to charge your tablet, you need a larger capacity power bank, the power bank capacity should be more than 8000MA and can provide high current 2A output charging requirements. If you have any questions, please contact our customer service , we will reply to you as soon as possible 1 * Original Romoss Power Bank Sense 6P
1 * USB Cable
1 * Instructions

Packaging Details

Unit Type: 
 piece
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