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Romoss Sense4 LED 10400mAh Power Bank Output 5V/1A Dual SMART USB Port External

HomePower BankRomoss Sense4 LED ..

98.3 star rating
98.3 of 100

Emergency / Portable
Quality Certification
Battery Capacity(mAh)
Battery Type
Lit-polymer Battery
Is LED Lamp Illumination
Supports Solar Energy
Input Interface
Micro USB
Output Interface
Double USB
Brand Name
Input: 2.1A Output: 1A/2.1A
Charging time
About 3.5hours
Input: 5V Output: 5V
Model Number
sense4 LED

19 Oct 2017

- L**i G.
25 Oct 2017

- J****p P.

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ipmart logo-2013











The following data are laboratory measured values.



















security function:

Overcharge protection, overcurrent protection, over-discharge protection, undervoltage protection, short circuit protection, over power protection, thermal protection, recovery protection, anti-reverse protection, EMF protection



- Capacity is 10400 mAh
- C harge and discharge cycle times or 300 times
- 2.1 A MAX input DC5V. (Micro USB port)
- Size: 138x62x22mm
- Certification of the FCC \ CE
- Protection circuit
- Conversion rate of about 85%
- USB1:  DC5V 2.1A,  USB2: DC5V 1.0A
- Weight about 296g
-Charging time about 3.5hours
Support for mobile phones, tablets, MP3, MP4 and other digital products
These datas was tested by vip customer Georigiy Kozlov
1. Charge from 0-100% 8741 mAh 2. Discharge from 100-0% 6345 mAh 3. Charge from 0-100% 8856 mAh 4. Discharge from 100-0% 6392 mAh 5. Charge from 0-100% 8863 mAh 6. Discharge from 100-0% 6523 mAh 7. Charge from 0-100% 8707 mAh Charged with the original charger from Lenovo vibe P1 c58 , checked the capacity kcx-017     
Dear friend 
Welcome to our store !!!
We are ROMOSS Brand Store ,every product in our store is Original,please do not worry about that.
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 *  Romoss Sense LED 104 00mAh Power Bank
. 1 * USB Cable
. 1 * User  Manual
  1 * Warranty Card

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