Introducing the HKM-498259 DIY Mobile Power Box, your ultimate solution for a custom power bank and battery charger. This versatile device allows you to create a power bank tailored to your needs using four 18650 lithium-ion batteries, enabling an external power supply that ensures your devices stay charged on-the-go.

The HKM-498259 showcases dual input options - an 8-pin connector and a Micro USB port. This convenient feature means you can easily calculate the power capacity without the hassle of multiple cables. Plus, with dual outputs, you can charge your smartphone, tablet, or other small electronic devices simultaneously, maximizing efficiency during your busy days.

Equipped with an independent circuit, this power box enables charging and discharging at the same time, ensuring there’s no interference between operations. The LCD display screen clearly indicates the battery status, giving you real-time information on remaining capacity for each battery.

Safety is paramount, which is why the HKM-498259 incorporates reverse polarity protection. If incorrectly connected, the internal chip automatically cuts power, preventing any potential damage and safeguarding other circuits from disruption.

Please note that this product does not include batteries, effectively minimizing risks associated with battery transportation. With the HKM-498259, you can confidently choose your own battery capacity and core, steering clear of low-quality and counterfeit options.

Optimize your charging solution with the HKM-498259 DIY Mobile Power Box, where customization meets reliability.

Size: 100*84*26 mm
Input: DC 5V-1A
Output: DC 5V-1A DC5V-2A

Properties:
DIY Power Bank and Charger: custom capacity by 4x18650 li-ion battery to make your own power bank, portable external supply, offers your devices enough power. Also a battery charger for 18650 battery, a dual-use item
Dual Inputs: 8 Pin and Micro USB dual inputs, only one cable can calculate the power bank, easy operation
Dual outputs, can charge cell phones, pads or other small electronic devices at the same time
Independent circuit: Independent battery, charge and discharge at the same time, can work together and not influence each other
LCD display screen: Each battery independently clearly shows subtitles, easy to read the remaining capacity
Reverse Polarity Protection: When it comes to reversed polarity, the chip inside will automatically identify and cut the power of the reverse polarity circuit, showing an empty battery level
Conversely polarity will not affect the normal operation of other circuits

note:
1. This product does not contain batteries. And effectively avoid the risks and troubles caused by battery transportation.
2. Guarantee quality, DIY custom capacity. Determine the capacity and battery core by yourself. Reject false capacity, low quality inferior batteries, and fake batteries.