Pros

  • Craftsmanship is good, suggesting durability.
  • Works as advertised and holds charge well over time.
  • Charges phones as quickly as a manufacturer's wall charger.
  • Impressive performance, providing a strong charge despite its size.
  • Reliable, with multiple units purchased last year still functioning well.
  • Provides power for approximately 4 days for specific applications like a birdbath pump.
  • Capable of charging a phone while simultaneously recharging the power bank.
  • Proven to successfully power higrain devices like cameras during use.

Cons

  • Advertised as 'Slim' but is thicker and considerably larger than expected, difficult to carry.
  • Takes over 4 hours and up to 20 hours to fully charge.
  • Real capacity is slightly lower than advertised; misleading battery indicators.
  • Typ port is for input only; lacks a battery percentage indicator.
  • Does not support fast charging; slower compared to highend models.
  • Some units failed to hold a charge after brief use, leading to dissatisfaction.
  • Limited to charging older devices, unsuitable for newer models that require higher wattage.
  • Users describe slow and inadequate charging, not ideal for emergency use.

Bottom Line

The Pocket Juice 20,000mAh Slim Pro offers decent performance for basic charging needs with good durability and reliability over time. However, its bulkiness, long charging time, and the absence of fast charging capabilities make it less ideal for users with modern power demands or those seeking a truly portable power bank. If the manufacturer resolved the charging issues, it could considerably enhance user satisfaction.

Lowest at any Popular Retailer
$19.88 at Walmart
How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 4 retailers to give you the short version.

Where to Buy

Prices last updated: May 13th 2026 6:41 pm
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