Pros
- Built-in cables simplify charging multiple devices without extras
- Lightning-fast 22.5W output recharges phones quickly as per user tests
- Huge capacity lasts for multiple full charges and extended use
- Digital display provides clear battery status
- Reliable safety features ensure device protection
Cons
- Weighs 1.14 pounds, noticeable during long walks
- Takes 5-6 hours to fully recharge from low battery
- Shiny surface scratches easily in bags or travel
The YILANS JM4 Pro is a 50000mAh portable power bank designed for users needing reliable power for multiple devices, such as travelers, campers and families with iPhones, Samsung Galaxies or other smartphones. It stands out with built-in Type-C, iOS, Micro-USB and USB-A cables plus additional ports, eliminating the need to carry separate cords and enabling simultaneous charging of up to 6 gadgets.
Real-world performance shines with 22.5W fast charging that powers an iPhone 17 to 55% in 30 minutes, as noted in customer feedback. Users praise its ability to recharge phones multiple times, run lights for hours nightly or sustain devices during long trips across Asia or Europe. The smart chip adapts to devices for efficient, safe power delivery, with reviews highlighting quick top-ups for work phones, personal devices and earbuds even under heavy use.
Build quality feels solid with a slim 5.61 x 2.88 x 1.12-inch profile weighing just 503g, making it pocketable for backpacks despite the capacity. The LED display offers precise battery readouts, and it includes safety protections against common risks. Customers appreciate its durability on motorcycles or in saddlebags, though some note minor cosmetic wear.
Drawbacks include its weight for extended carrying, lengthy recharge times of 5-6 hours from low levels and a scratch-prone shiny finish. Airport rules in some regions may flag capacities over certain limits.
Overall, this power bank earns high marks for convenience and endurance, making it a top pick for anyone prioritizing tangle-free, multi-device charging on the move. Highly recommended for frequent travelers or heavy users.
Battery Capacity: 50000mAh
Ports: 6 outputs (built-in cables + 1 Type-C, 2 USB-A), 2 inputs
Charging Speed: 22.5W PD QC3.0/4.0
Compatibility: iPhone 17/16/15/14/13 series, Samsung Galaxy S22/S21/S20, Google Pixel, tablets, AirPods and more
Dimensions: 5.61 x 2.88 x 1.12 inches; Weight: 1.14 pounds
Special Features: Built-in cables, digital LED display, fast charging, multiple safety protections
Warranty: 18 months
Perfect for travel: 'Lightning fast recharge rate... used off grid camping' - J. Marske
Beast capacity: 'Lasts 2.5 charges for 3-4 hour nightly use' - Amazon Customer
Convenient cables: 'No spaghetti of cords... powered two iPhones on SE Asia trip' - Zia
Multi-device power: 'Charges family Samsungs all on one charge' - Mr & Mrs Green