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Product comparison · 2 power banks

Lenovo 140W Smart Laptop Power Bank vs Ugreen PB521 Lithium Polymer (LiPo)

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  • 21specifications compared
  • 12differ
  • 9identical
  • 18known for one product only

Key differences

The Ugreen PB521 Lithium Polymer (LiPo) has 1 Wh more battery capacity than the Lenovo 140W Smart Laptop Power Bank (74 Wh vs 73 Wh). The Lenovo 140W Smart Laptop Power Bank has 1 more USB Type-C ports quantity than the Ugreen PB521 Lithium Polymer (LiPo) (2 vs 1). The Lenovo 140W Smart Laptop Power Bank has 2 A more output current than the Ugreen PB521 Lithium Polymer (LiPo) (5 A vs 3 A). Product colour: Black on the Lenovo 140W Smart Laptop Power Bank, Beige on the Ugreen PB521 Lithium Polymer (LiPo). Display type: TFT on the Lenovo 140W Smart Laptop Power Bank, LED on the Ugreen PB521 Lithium Polymer (LiPo).

  • Product colour
    • Black
    • Beige
  • Display type
    • TFT
    • LED
  • Battery capacity
    • 73 Wh
    • 74 Wh
  • USB Type-C ports quantity
    • 2
    • 1
  • Output current
    • 5 A
    • 3 A
  • Output voltage
    • 28 V
    • 5 V
  • Width
    • 51 mm
    • 116 mm
  • Depth
    • 39 mm
    • 70 mm

Side by side

Differences highlightedShow differences only
39 specifications
A

Lenovo

140W Smart Laptop Power BankView product
B

Ugreen

PB521 Lithium Polymer (LiPo)

Model PB521

View product
Design3 differ
Number of simultaneously connected devices (max)33
Product colourDiffersBlackBeige
Housing materialDiffersPlasticPolycarbonate (PC), Acrylonitrile butadiene styrene (ABS)
Charger compatibilityUniversalUniversal
Built-in displayYesYes
Display typeDiffersTFTLED
ShapeKnown for oneRectangle
Performance1 differ
Charging sourceUSBUSB
Battery capacityDiffers73 Wh74 Wh
Wireless chargingKnown for oneNo
Built-in radioKnown for oneNo
Fast chargingYesYes
Fast charging technologyKnown for oneQuick Charge 3.0
USB Power Delivery (USB PD)Known for oneYes
USB Power Delivery up toKnown for one30 W
Battery charge time (USB)Known for one4 h
Ports & interfaces1 differ
Input interfaceUSB Type-CUSB Type-C
USB Type-A connectorKnown for oneYes
USB Type-A output ports11
USB Type-C connectorYesYes
USB Type-C ports quantityDiffers21
Power2 differ
Total output powerKnown for one140 W
Output currentDiffers5 A3 A
Output voltageDiffers28 V5 V
Power protection featuresKnown for oneOver voltage, Overheating, Over current
USB Type-C charging portKnown for oneYes
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 25 °C
Certificatesidentical
CertificationKnown for oneCB, CE, FCC, IC, cTUVus, CEC, DOE, Nrcan, RCM, CCC, BIS, KC, TISI, CoC, NRCS LoA, ECAS, ANATEL, NOM, EAC, DoC
Weight & dimensions4 differ
WidthDiffers51 mm116 mm
DepthDiffers39 mm70 mm
HeightDiffers154 mm30 mm
WeightDiffers463 g344 g
Packaging contentidentical
Cables includedKnown for oneUSB Type-C
Packaging dataidentical
Package widthKnown for one171.5 mm
Package depthKnown for one103 mm
Package heightKnown for one49 mm
Package weightKnown for one660 g
Battery1 differ
Battery technologyDiffersLithium-Ion (Li-Ion)Lithium Polymer (LiPo)
Battery capacity20000 mAh20000 mAh

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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