Our DC rechargeable air cooler redefines portable comfort, backed by market-leading 21700 lithium-ion technology — the same battery type trusted by Tesla and top automakers for its 30% higher energy density than old 18650 cells .

Battery:  

At its core lies a 9-cell, 15,000mAh 21700 battery pack (12.6V) : blast full power for 5+ hours during outdoor hikes or office commutes, then let it auto-switch to sleep mode for 15 more quiet hours of bedroom comfort . No more mid-camping or late-shift shutdowns. 

Charging is effortless too. Top it up in just 3 hours when powered off — perfect for morning rushes. It keeps running as it charges, taking only 10+ hours to full (depending on remaining power) .

Slim yet robust, it fits every scene: desk, tent, or nightstand. With the 21700 battery’s proven long cycle life , this air cooler isn’t just a summer fix- it’s a year-round companion. Beat the heat without compromise. Grab yours and stay cool, longer.

Our products:

Products shipped in line with the testing standards, meet the requirements of sea or air transport, testing certificates are completed.

Moreover, the Lithium battery was protected so as to prevent short circuits. This includes protection against contact with conductive material within the same packages that could lead to short circuit.

Outer packages：

Lithium cells and batteries are packed in inner packages that completely enclose the cell or battery and placed in a strong outer package.

Container loading in strictly accordance with requirements of the supervisor：

Handling：

Don't handle the batteries in manner that allows terminals to short circuit. Do not open, disassemble, crush or burn battery.

Storage:

1. If the battery is subject to storage for a long time that more than 3 months, it is recommended to replace the battery.

2. Long period storage: -10 degree~35 degree, 60±25%R.H.

3. Do not storage the battery haphazardly in a box or drawer where they may short-circuit each other or be short-circuited by other metal objects.

4. Keep out of reach of children.

5. Do not expose the battery to heat or fire.Avoid storage in direct sunlight.

6. Do not store together with oxidizing and acidic materials.

It refers to air cooler with built-in and safe and reliable sealed rechargeable lithium battery, AC and DC type in one device. It can be used for outdoor ,camping,temporary operations, mobile booths, school dormitories and other temporary no power supply, to bring convenience to people's daily life.