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
Blue rectangular power bank with rounded edges, four USB ports on one end

JUOVI J2931 65W 20000mAh power bank

SKU CH-2V08-RW890 MPN J2931

A 20000mAh lithium-polymer power bank delivering up to 65W output through two USB-C and two USB-A ports for laptops, tablets and phones

  • Total capacity20000 amp hours
  • Battery chemistryLithium polymer
  • Voltage5 V
  • Amperage3 A
  • Measurements5.4 in × 1.0 in × 2.8 in
  • Product type20000 amp hours
  • 65W fast charging powers laptops like MacBook and Dell XPS
  • 20000mAh capacity delivers about 13000mAh usable power after conversion losses
  • Four ports — two USB-C and two USB-A — charge multiple devices at once
  • Airline-approved 100Wh design clears TSA security for worldwide travel
  • Multi-protection circuitry guards against overvoltage, overload, overheating, overcurrent and short circuit

20000mAh 65W portable charger

The JUOVI J2931 is a 20000mAh lithium-polymer power bank that delivers up to 65W of power through two USB-C and two USB-A ports. It measures 5.4 in by 1.0 in by 2.8 in and weighs 400 grams. The unit is airline-compliant at 100Wh.

Travellers and multi-device users

This power bank suits people who need to charge a laptop, phone and tablet from one compact unit while flying. It is not for users who only need occasional phone top-ups or who want a smaller, lighter pack for daily pocket carry.

65W maximum output

The single specification that decides fit is the 65W peak output across the USB-C ports. If your laptop requires more than 65W to charge while in use, this bank will not keep pace.

How it compares

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

Price $63.99
Pricier than about 90% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameJUOVI
Model nameJ2931
Total capacity20000 amp hours
Product type20000 amp hours
Product colorBlue
Power
Battery chemistryLithium polymer
Voltage5 V
Amperage3 A
Size & build
Measurements5.4 in × 1.0 in × 2.8 in
Product weight400 g

Questions about this item

How long can the 65W output run before the power bank overheats and throttles?

Input power decreases gradually while recharging to prevent overheating; use in a cool, ventilated environment between 32 and 77°F and avoid charging other devices at the same time for best results

How loud or hot does the JUOVI J2931 get when charging a laptop all day?

The unit has multi-protection against overheating, overcurrent and short circuit; it reduces input power during recharge to manage heat and the phone auto-stops when full to protect battery health

What cables or chargers must I already own to use the 20000mAh pack?

It provides 2 USB-A and 2 USB-C ports supporting PD, PPS, QC, FCP and SCP protocols; bring your own USB-C or USB-A cables and a compatible wall charger for recharging the power bank

More in Portable Chargers & Battery Packs

Similar items