JOYROOM 45W GaN fast-charging power bank
Tiny enough for any pocket. Doubles the speed of a standard 22.5W charger.
The JOYROOM JR-L012 Ultra is a white 45W GaN fast-charging power bank with built-in dual cables and a 20,000mAh battery — roughly 12% smaller than the previous generation.
What is the JOYROOM JR-L012 Ultra?
A direct product summary for faster buying decisions.
Quick answer
The JOYROOM JR-L012 Ultra is a white 45W GaN fast-charging power bank with built-in dual cables and a 20,000mAh battery — roughly 12% smaller than the previous generation.
- Brand
- JOYROOM
- Model
- JR-L012 Ultra
- Type
- GaN Power Bank
- Capacity
- 20,000mAh / 74Wh
- Weight
- 445 g
- Colour
- Black
Why it may suit you
Practical benefits based on documented specifications.
Double the speed
45W output charges up to 2x faster than standard 22.5W power banks, optimised for iPhone 17 series.
Built-in dual cables
No extra wires needed for travel — two built-in long charging cables mean one device is always ready.
Ultra-compact GaN design
12% smaller than previous generation while packing 20,000mAh — industry-leading power density.
Check compatibility before checkout.
For the fastest supported charging, your device and cable must support the relevant USB Power Delivery or charging standard. Output is shared when several USB devices are connected.
USB-A devices
PD fast charging
iPhone 17 series
Technical specifications
Normalized product facts for easy comparison.
| Product type | GaN fast-charging power bank |
|---|---|
| Model | JR-L012 Ultra |
| Output power | Up to 45W max |
| Battery capacity | 20,000mAh / 3.7V (74Wh) |
| Rated capacity | 12,000mAh @ 5V=3A |
| Battery type | Lithium Polymer |
| Input | PD fast charge via Type-C port |
| Output ports | Built-in dual long cables |
| Weight | 445 g |
| Dimensions | 100 × 42 × 165 mm |
| Material | PC + ABS fireproof |
| Colour | Black |
What is in the box
- JOYROOM JR-L012 Ultra power bank
- Built-in dual cables
- Retail packaging
How to use it
- Confirm your device supports PD fast charging for maximum speed.
- Unpack and remove the built-in cables from their stowed position.
- Connect your device directly — no extra cable needed.
- Keep combined charging within 45W max output.
Common buying questions
Clear answers to important compatibility questions.
Can it charge a laptop?
Yes — the 45W output supports compatible laptops that accept USB-C Power Delivery charging. Check your laptop’s required wattage before purchase.
Do I need an extra cable?
No — two built-in long cables are included, so you can connect one device immediately without carrying anything extra.
How many times can it recharge a phone?
A 20,000mAh bank can fully charge most smartphones approximately 3–4 times on a single charge of the power bank.
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