| Name: | 50000 mAh huge capacity mini power bank |
| Brand: | Mietubl |
| Model: | MTB-PBNW04 |
| Battery capacity: | 50000 mAh |
| Ports: | 4 USB output ports, 1 TYPE-C bidirectional port, 1 Micro USB input port, 1 lighting input port |
| Output: | 5V/3A, 9V/2A,12V/2A |
| Input: | 5V/2A, 9V/2A |
| LED: | 20 lamps, multiple lighting modes |
| Size: | 71 x 66 x 148 (mm) |
| Material: | PC + ABS fireproof material + silicone handle |
| Weight: | 1 Kg |
Roughly: a 10,000 mAh bank gives about 2–3 phone charges; 20,000 mAh about 4–5. Actual results vary by phone battery size, cable, and usage.
Possible reasons: low-power port, older cable, very low phone battery entering trickle mode, or the phone lacks higher-speed support. Try a fast-charge USB-C port and a rated cable.
Most support pass-through charging, but it generates heat and slows both processes. Avoid continuous pass-through for >5 hours to prevent battery stress. For heavy usage, choose models with heat-dissipation fins.
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