Tech · Research-based buying guide
Anker 737 Power Bank (PowerCore 24K): Is it right for you?
Anker 737 Power Bank (PowerCore 24K) — 140W High-Capacity Travel Charger
The Anker 737 Power Bank (model A1289) is a 24,000 mAh lithium polymer portable charger rated at 140W maximum output via USB Power Delivery 3.1. It carries two USB-C ports and one USB-A port, allowing three devices to charge simultaneously. Its OLED display shows real-time wattage per port, battery percentage, cycle count, battery health, and temperature. The energy capacity of 86.4 Wh sits just below the 100 Wh airline carry-on threshold, making it travel-legal on most flights without prior airline approval. Anker markets it with a 24-month warranty and a 10-point ActiveShield 2.0 safety monitoring system. No wall charger is included in the box.
The short answer
A 24,000 mAh power bank that can fully charge a laptop at 140W and a phone simultaneously, with a fast 1-hour self-recharge — but it is heavy and requires a separately purchased PD 3.1 cable.
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How we research our recommendationsA good fit if…
Laptop users who need a single bag-based power source for a MacBook and phone on travel days. People who regularly work away from outlets and want the flexibility to charge a USB-C laptop, tablet, and smartphone from one device. Those willing to invest in a premium power bank and the appropriate PD 3.1 cable to unlock full speeds.
Skip it if…
Anyone looking for a lightweight pocket-friendly power bank: at 22 oz (630 g) this belongs in a bag, not a pocket. Skip it if you only charge phones and do not need laptop-level wattage — a smaller, cheaper bank will serve you better. Also skip if you are not ready to buy a separate PD 3.1-rated USB-C cable and a 140W wall charger, both needed for advertised peak speeds.
What actually matters
Capacity and energy: 24,000 mAh across six lithium polymer cells, rated at 86.4 Wh — just below the 100 Wh FAA carry-on limit, so it generally qualifies for carry-on luggage without special airline approval. Always verify the current rules with your specific airline before flying.
Port layout: two USB-C ports and one USB-A port. USB-C1 supports bidirectional input and output up to 140W (5V/3A, 9V/3A, 15V/3A, 20V/5A, 28V/5A). USB-C2 also outputs up to 140W at the same voltage steps. USB-A outputs up to 18W (5V/3A, 9V/2A, 12V/1.5A). The 140W figure is a shared total across all active ports, not per-port simultaneously.
Charging protocols: USB Power Delivery 3.1 and Programmable Power Supply (PPS), marketed by Anker as PIQ 3.0. To reach 140W, both the connected device and the cable must support PD 3.1 — most standard USB-C cables on the market do not. Anker's FAQ confirms this requirement explicitly.
Self-recharge speed: approximately 1 hour when connected to a 140W PD wall charger via a PD 3.1 cable. Neither a wall charger nor a PD 3.1 cable is included in the box. Roughly 1.5 to 2 hours is achievable with a 96W charger.
OLED display: shows input and output wattage per port, remaining battery percentage, battery cycle count, health percentage, and temperature. Per Anker's own FAQ, leaving the settings screen active draws 0.36W and can drain roughly 15% of the battery in 24 hours of standby. Anker recommends turning the display off when not in use.
Size and weight: 6.13 x 2.15 x 1.95 inches (155.7 x 54.6 x 49.5 mm), weighing 22.22 oz (630 g). Reviewers at 9to5Toys describe it as a backpack power bank rather than a pocket carry. Available only in black.
Known incompatibilities per Anker's support documentation: DJI Mini Pro drones and Lenovo Legion laptops requiring 140W input are listed as not fully compatible despite the bank's rated output — a device-side handshake limitation. No IP rating for water or dust resistance is listed.
Safety and disposal: lithium polymer batteries should never be punctured, crushed, submerged, or exposed to extreme heat. A visibly swollen or damaged unit should not be charged or used and must be disposed of through certified e-waste or battery recycling — not household trash. No food allergens or latex components are present in normal use.
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Sources, not guesswork
Published October 7, 2026. Consult the linked sources for current specifications. This is an editorial shortlist, not a verified Amazon bestseller or search-volume ranking.
Anker 737 Power Bank (PowerCore 24K) — Official Product Page, Anker USTested: Anker PowerCore 24K delivers versatile 140W USB-C charging — 9to5Toys (Rikka Altland, Oct 2022)