1) Please use all power

2) And then fully charge

3) It will be better to charge-discharge about 2-3 times to achieve a good capacity

 

Specifications:

Battery type: Li-ion polymer battery

Color: black, white

Battery capacity: 50000mAh/3.7V

Rated capacity: 32500mAh/5V - 37000mAh/5V

Input: 5V/2.1A*3

Output: 5V / 2.1A * 4

Power: 10W

Material: ABS

Size: 165*81*50mm

Net weight: about 1090g

 

Functions:

1. With digital display

2. With LED light

2. 4 USB output ports (USB A), 3 input ports (for Lightning+Micro USB+TypeC)

3. Large capacity - 50000mAh

 

Frequently asked Questions

 

Q: Why is the battery capacity 50000 mAh but the nominal capacity is only 32500 mAh? (Why does it show capacity below 50000mAh when testing?)

 

A: 1. The Law of Conservation of Energy The unit of measure for the power of a power bank is not only "mAh", but also "mWh" (voltage V * capacitance).

Since the standard voltage of the lithium battery of the power supply is 3.7V, the current charging voltage of ordinary mobile phones and computers or other mobile devices is the standard voltage of 5V for the USB interface. The mobile power supply must be boosted to 5V before charging the mobile phone.

 

For example :

The normal energy of a 50,000 mAh power bank is 50,000mAh * 3.7V = 185,000mWh. After the amplifier circuit outputs 5V, the output becomes 3.7V/5V * 50000mAh = 37000mAh. (37000mAh*5V=185000mWh)

 

2. Power consumption while charging

In the process of increasing the power of the mobile power supply, due to the loss of the booster circuit itself, it cannot output 100% of all power, and the conversion rate is related to the output current. Generally, when outputting 1A current, the conversion ratio will be higher than when outputting 2A.

The conversion rate of the entire mobile energy industry is mainly in the range of 60%-70%.

So a conversion rate of 60%-70% and a rated capacity of 30000mAh-35000mAh are reasonable.

50000mAh large capacity power bank

When fully charged, it can be used for 2-3 weeks.

Power bank with high quality battery