First look at Anker's 'Nano Power Bank 20K with Built-In USB-C Cable' reveals trickle-charging mode and digital display

Anker's 'Nano Power Bank 20K with Built-In USB-C Cable' surfaced on Reddit last month in August, where it was reported to feature a bidrectional USB-C port with 30W maximum output. At the time, all we had was a sketch of the gadget. Now, an image of the same portable charger has shown up on Reddit.

As per the post, the Nano Power Bank 20K (model A1387), will be a follow-up to the A1259 model (curently $39.99 on Amazon). This power bank offers a 74Wh capacity (20,000 mAh), matching the capacity revealed in earlier leaks. The new power bank features a built-in bidirectional USB-C cable with a right-angle plug, allowing for both charging external devices and recharging the bank itself. Along with the integrated cable, there’s a USB-A port for 22.5W output and a USB-C port capable of up to 30W output/input.

The digital display indicates charging status, similar to its predecessor. In terms of size, the power bank measures 16.5 × 7.6 × 2 cm, making it slightly larger than previously thought - but also 0.6 cm slimmer than its 10,000 mAh sibling. 

Notably, the leak mentions that this new model is around 11% larger than the Anker 535 PowerCore 20K, which was recalled due to fire risks. While weight information isn’t available yet, it’s clear that this device is designed to be both powerful and portable. As for pricing, it will most definitely be priced above the $45 retail price point of the 10,000 mAh variant, but no exact figure has been announced.