DIY power bank case fits 3 x 18650 batteries, supports fast charging up to 22.5W, and features a clear battery level display.
Designed with a solder-free approach, this power bank case allows beginners and enthusiasts to assemble it quickly without technical skills.
Its modular construction supports easy maintenance and straightforward upgrades like battery replacements.
The case holds three 18650 flat-top batteries, accommodating up to 10,000mAh capacity to deliver long-lasting power.
Please note that batteries are not included, allowing you to select your preferred quality and capacity.
Supports 10W or 22.5W fast charging protocols to quickly charge connected devices, saving time.
Includes Type-C input/output with multiple voltage settings and a USB output to meet different device needs.
A high-definition indicator displays the remaining battery power, letting you monitor energy levels at a glance in real time.
The batteries are almost new with a capacity of about 2000-2500mAh each, and each had the same starting voltage of 4.2V, all were balanced, and then the battery discharged to 3.9V and the power bank stopped working, meaning the lifespan is very short, only 10-20 percent of the full capacity, only 4.2-3.9V works at all, it just looks good.
