Anker Portable Charger 325 Power Bank 20K - Long-Lasting Portable

In this review of the Anker Portable Charger 325 Power Bank (PowerCore Essential 20K), the bottom line is simple: it is a reliable, high-capacity backup battery for travelers and power users who need multiple full phone charges without adding much bulk. The reviewer found the combination of a true 20,000mAh capacity and a compact 6.2 in by 2.9 in by 0.8 in footprint makes it one of the most practical choices for day trips, commutes, and overnight travel, while the two-way USB-C and dual USB-A outputs let users keep two devices topped up at once.

Key Features

• Massive Capacity: The 20,000mAh battery provides multiple full charges so phones last through days away from an outlet.
• Compact Size: At roughly 6.2 in by 2.9 in by 0.8 in and about 12 oz, it fits comfortably in a backpack pocket or larger coat pocket while still offering high capacity.
• Bi-Directional USB-C: The USB-C port supports 15W two-way charging so the pack can recharge quickly and also power devices at a useful speed.
• Multiple Outputs: Two USB-A ports plus a USB-C output let you charge two devices simultaneously without sacrificing convenience.
• PowerIQ and VoltageBoost: Built-in charging intelligence provides safe, optimized current for a wide range of devices, including trickle mode for low-power accessories.
• Flexible Recharging: The unit accepts either USB-C or micro USB input and reaches a full charge in about 9 hours with a 15W or stronger charger.

Who It's For

This power bank suits frequent travelers, commuters, and anyone who carries multiple devices and needs dependable multi-charge capacity in a compact package. It is especially good for users of modern phones who want USB-C convenience plus legacy USB-A ports for headphones, older chargers, or spare cables.

Those who want ultra-compact pocket chargers for single-day outings or the fastest possible fast charging may look elsewhere; this model trades absolute minimal size and highest-watt output for a balance of capacity, weight, and practical charging speeds.

Pros & Cons

Pros

• High 20,000mAh capacity delivers several full phone charges without being overly large.
• Compact dimensions and light weight make it easy to carry for travel and daily use.
• Two-way USB-C at 15W and dual USB-A outputs allow simultaneous charging of multiple devices.
• PowerIQ and VoltageBoost improve compatibility and protect small accessories with trickle-charging.

Cons

• 15W USB-C output is practical but not the fastest available on the market for charging high-end phones or tablets.
• Full recharge time of about 9 hours requires a 15W or stronger wall charger, which may need to be carried separately.

Specifications

Capacity	20,000mAh
Dimensions	6.2 in x 2.9 in x 0.8 in
Weight	About 12 oz
Output Ports	2 x USB-A, 1 x USB-C (two-way)
USB-C Power	15W bi-directional
Input Options	USB-C or Micro USB
Included	USB-C cable, welcome guide, 18-month warranty

Our Verdict

The Anker 325 Power Bank is a strong value for people who want multiple full charges in a carryable package. It balances high capacity, sensible weight, and useful port choices with Anker's charging intelligence, making it a pragmatic pick for travelers and daily commuters who need dependable backup power without carrying a heavy brick.

Frequently Asked Questions

How many phone charges will I get?
It offers around 3.6 charges for an iPhone 15 and about 2.9 charges for a Galaxy S23 Ultra, depending on usage and cable losses.

Can it charge two devices at once?
Yes, the two USB-A ports plus the USB-C output let you charge two devices simultaneously, with the USB-C supporting up to 15W.

How long does it take to fully recharge the power bank?
With a 15W or stronger charger using the USB-C input, a full recharge takes about 9 hours.