We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular power bank with built-in cables and multiple ports

YILANS JM4 Pro 50000mAh power bank 22.5W built-in cables Black

SKU CH-P6FJ-B3ZQE MPN JM4

Massive 50000mAh capacity with four built-in cables and six outputs charges up to six devices simultaneously at 22.5W fast charging

  • Total capacity50,000 mAh
  • Voltage5 V
  • Output typeUSB Type C and USB Type A
  • InputUSB Type C and USB Type A
  • Measurements5.61 in × 2.88 in × 1.12 in
  • Product type50,000 mAh
  • 50000mAh capacity keeps devices running for days on a single charge
  • Four built-in cables plus three extra ports charge six devices at once
  • 5W fast charging powers iPhone 17 to 55 percent in 30 minutes
  • QC 3.0 and 4.0 technology adapts automatically for safe efficient charging
  • Compact 5.61 by 2.88 by 1.12 inch design weighs only 1.14 lb

Massive 50000mAh capacity with built-in cables

This high-capacity power bank stores 50000mAh to keep phones and tablets running for days. Four integrated cables cover Type-C, iOS, Micro and USB-A so no separate cords are needed. Three additional ports bring the total to six simultaneous outputs for groups or multi-device users. Two input options let you recharge the bank itself via Type-C or USB-A.

Integrated cables and six-output layout for daily

The built-in cables eliminate tangled wires and lost adapters while travelling or commuting. Six output ports mean a phone, tablet and earbuds can all charge at once without swapping leads. A rugged black casing protects the internal premium battery chip that monitors overcharge, over-voltage, over-current and short-circuit risks. Millisecond-level safeguards cut power instantly if a fault is detected.

22.5W peak output and QC 3.0/4.0 protocol limits

Maximum output reaches 22.5W using QC 3.0 and 4.0 fast-charge protocols for compatible devices. An iPhone 17 can reach 55 percent in 30 minutes under ideal conditions. Devices that do not support these protocols will charge at lower rates. The 5V fixed voltage and 50000mAh capacity set the practical energy ceiling for any connected hardware.

How it compares

Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.

Price $38.99
Pricier than about 54% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameYILANS
Model nameJM4 Pro
Part numberJM4 Pro
Total capacity50,000 mAh
Product type50,000 mAh
Product colorBlack
Ports & slots
Output typeUSB Type C and USB Type A
InputUSB Type C and USB Type A
Power
Voltage5 V
Size & build
Measurements5.61 in × 2.88 in × 1.12 in
Product weight1.14 lb (0.52 kg)

Questions about this item

What charging standard does the 22.5W USB-C port use and what is its practical output limit?

The USB-C port supports 22.5W fast charging with QC3.0/4.0 technology, delivering up to 22.5W maximum output for compatible devices.

What are the exact dimensions and weight to check if it fits in my bag or mount?

It measures 5.61 in x 2.88 in x 1.12 in and weighs 1.14 lb, making it compact enough for travel bags or desk setups.

How do I start charging my iPhone 16 with the built-in cables and what step is often missed?

Press the power button to activate the bank, then plug in the built-in Lightning or Type-C cable; the bank won't output power until the button is pressed.

More in Portable Chargers & Battery Packs

Similar items