Oraimo 20000mAh, 30000mAH, 40000mAh and 50000mAh Portable Power bank .

oraimo PowerNova Q21 is a 20000mAh power bank featuring 22.5W fast charging, a digital display, and triple output ports (two USB-A and one USB-C). It supports PD 3.0 and QC 3.0 fast-charging protocols and has 15 layers of smart protection to ensure device safety. The power bank also supports 20W two-way fast recharging. 

Oraimo 30000mAh Power Banks (e.g., PowerBox 300, OPB-P300Q): These are larger than the 20000mAh versions but still maintain a relatively sleek, portable design. They often feature a more prominent, large digital LED display that shows the exact remaining capacity as a percentage, rather than just indicator lights. They usually have multiple output ports (around 4-5 total) arranged on one end and often include a built-in LED torch.

Oraimo 40000mAh Power Banks (e.g., PowerBox 400, OPB-P400Q): These are significantly larger and thicker than the lower-capacity models, designed more for long-term power storage than easy pocket portability. They have a robust, rectangular shape with a big digital display to monitor power levels and multiple ports (including Type-C and USB-A) for charging several devices simultaneously. A built-in LED torch is a standard feature.

Oraimo 50000mAh Power Banks (e.g., PowerBox 500, OPB-P500QN): As the largest capacity option, these are the bulkiest and often feature a sturdy silicone handle on the side to aid portability. They also have a large digital display and multiple ports. A key visual difference is the inclusion of three-mode adjustable LED lights on the end, functioning as a powerful, versatile torch.