10000mAh 2IN1 MAGNETIC HAND WARMERS portable Power Bank outdoor camping Hand Heater USB Phone Charger Lasting Heating warm Gift

10000mAh 2IN1 MAGNETIC HAND WARMERS portable Power Bank outdoor camping Hand Heater USB Phone Charger Lasting Heating warm Gift 
 

(double-sided heating)

10000mAh Rechargeable Hand Warmer Adjustable Heat – Design with 3 temperature modes [104~113℉ (40~45℃)], [113~122℉ (45~50℃)], 122~131℉ (50~55℃)], constant heat. 

Warm up Fast – Rapidly warm up double sides in 3 seconds, press the switch and instantly release the warmth for you. Double-sided and consistent warmth, heating up in 3 seconds, each full charge heating up to 4-8 hours, charging time is 3-6 hours. 
Reusable hand warmer built-in 10000mAh rechargeable

1.double-sided heating, you can choose the best temperature according to your needs, even in the cold days can also make your hands stay warm.

2. USB charging is fast and convenient, when the power runs out, just plug in the USB cable,the heating body using ceramic heat dissipation technology, heat retention time can last about 4-12 hours.fast heating up in 3 seconds 40°,50°,60°

3. 10000mAh 2-in-1 hand warmer, can be carried in one hand, or in a pocket, can be used to warm hands, feet, knees, belly. You can carry it with you du

Input/Output: 5V 2A
Heating power: 3.6W
Charging time: 3-6 hours

NOTE:

Portable Battery charger case has two regular standard of capacity , one is the battery capacity, one is the rated capacity. 
 
Why exist this difference?
 
The most important reason is the conversion rate. Because most of power bank’s battery voltage is 3.7V, and power bank needs to increase the voltage to 5V when charging the mobile phone, which making the power bank’s conversion efficiency only 3.75/5=74%, Also include generated heat when battery voltage boosting, and various of wire consumption, Electricity and self-consumption. these points add up to account for 30%-40% of the power of the mobile power source.
So the 5,000mAh power bank can really be used by us only about 3000-4000mAh.
 
Also, The conversion rate of the entire mobile power industry is basically in the range of 60%-70%. Please kindly noted.
 
Please search on Google if want to know the details!