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Green rectangular power bank with rounded edges, LED display, two USB-C ports and one USB-A port

INIU P512 20000mAh 22.5W Power Bank Green

SKU CH-GXHW-CS7DC

A 20000mAh lithium-polymer power bank delivers 22.5W fast charging to three devices via two USB-C and one USB-A port

  • Total capacity20,000 mAh
  • Compatible phone brandsSmartphone
  • Compatible phone modelsSmartphone
  • Battery chemistryLithium polymer
  • Voltage12 V
  • Amperage3 A
  • Charges phone to 75% in 30 minutes with 22.5W PD 3.0 and QC 4+
  • Powers iPad Pro to 34% in 30 minutes using 22.5W high-speed output
  • USB-C input and output ports fit new iPhones, iPad and upcoming USB-C devices
  • Three devices charge simultaneously via one USB-C and two USB-A ports
  • Pocket-sized 20000mAh capacity at 313.5 grams with 18-layer SmartProtect safety system

Pocket-Sized 20000mAh Capacity

The INIU P512 packs 20000mAh of lithium polymer energy into a green case measuring 2.8 by 4.1 by 1.2 inches and weighing 313.5 grams. It is built for travellers and commuters who need several full phone charges without carrying a bulky brick.

22.5W Output With PD 3.0 and QC 4+

The bank delivers up to 22.5W through two USB-C ports and one USB-A port, supporting PD 3.0 and QC 4+ protocols. A phone can reach 75 percent in 30 minutes while an iPad Pro hits 34 percent in the same window. Recharging the bank itself takes 5.4 hours with a 20W charger or 6.6 hours with a 15W unit via the USB-C input.

18-Layer SmartProtect And Triple-Port Layout

An 18-layer SmartProtect system monitors temperature and adjusts power to prevent overheating. The three-port arrangement lets you charge three devices at once, so families or colleagues can share one pack. Typical usable output falls between 12000 and 14000mAh after conversion losses.

How it compares

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

Price $45.99
Pricier than about 70% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameINIU
Model nameP512
Part numberP512
Total capacity20,000 mAh
Product type20,000 mAh
Product colorGreen
Ports & slots
Output typeUSB-C*2+USB-A*1
InputOutput: USB-C*2+USB-A*1
Power
Battery chemistryLithium polymer
Voltage12 V
Amperage3 A
Size & build
Measurements2.8 in × 4.1 in × 1.2 in
Product weight313.5 g
Compatibility
Compatible phone brandsSmartphone
Compatible phone modelsSmartphone

Questions about this item

Which capacity should I choose for multiple phone charges?

The 20000mAh unit delivers roughly 12000-14000mAh to devices after conversion losses, giving about four full charges for a typical 3279mAh phone battery.

What does the 22.5W rating mean for my phone in daily use?

It can charge a compatible phone up to 75% in 30 minutes and an iPad Pro up to 34% in the same time when the device battery is low.

What does the USB-C in/out port actually cap in practice?

The USB-C port handles both input and output at up to 22.5W, so recharging the power bank takes 5.4 hours with a 20W charger or 6.6 hours with a 15W charger.

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