Power bank repair
Power bank repair
I discovered a damaged power bank in the trash. When fully charged, it emits a soft beep during charging. Once fully charged, it only retains power for short periods before quickly losing it again. If I swapped out the blue batteries, would it function properly? Repairing the cracked sections of the casing by removing it improperly could cause further damage.
The 190000 mAh capacity is unrealistic. It would imply a single cell holding 63333 mAh, which isn’t feasible since cells aren’t designed that way. Also, the output of 5V DC at 1A (5W) is unlikely, so a 3000 mAh capacity seems more plausible (1000 mAh per cell). Even top-tier power banks with 12V DC typically have capacities between 20000-30000 mAh. A 190000 mAh figure doesn’t match real-world standards.
You can swap the cells if needed, since the PCB is still functional. Opt for smaller cells that support 5V DC at 1A—the maximum they can be charged with is what the PCB allows, according to the plastic specifications.
For the casing, secure it tightly. This ensures that damaged tabs won’t affect the structure and the product stays intact.
No branding on the device = a generic, low-cost item.
I’d discard it.