Anker 537 Power Bank: problems, parts and running costs

Checked: 2026-10-17

Summary

The Anker 537 (A1379) is a 24,000mAh, 65W USB-C power bank with two USB-C ports and one USB-A port, and the owner signals are thin but consistent: units not reaching the advertised 30W input, one “broken and useless after a month” report, and confusion over the 45W + 20W dual-port split. There are no consumables and no subscription; the only extra cost is the 30W+ PD wall charger, which is not included. It is a strong value under $40 (a $35 Woot deal in June 2026), fair at $41–70, and weak above $70 given its discontinued status in Japan and sold-out status in the EU.

Common problems and fixes

Not reaching the advertised 30W input — reported in a YouTube title from February 2023 by a user who tried other Anker chargers and a 100W cable; Anker publishes charging-issues troubleshooting for PowerCore units, and this model has its own support FAQs on recharge time and output power. [2][5][10]
Early failure — one YouTube title from September 2023 reports a unit “broken and useless after a month”; no prevalence data exists. Anker’s troubleshooting documents a reset for dead units: plug both ends of a cable into the input and output ports simultaneously for 3–5 seconds, then recharge and discharge. [6][10]
65W total ceiling, 45W + 20W split — the headline 65W is not per port; laptops that need more than 65W cannot run on it, and charging two devices at once splits the output. [1][2][14]
Only USB-C1 accepts input — the pack cannot be recharged from USB-C2 or USB-A. [2][3]
Recharge time confusion — the product page claims about 3.5 hours with a 30W PD charger, but Anker’s own support FAQ for this model states 4–4.5 hours. [2][4]
Discontinued in Japan, sold out in the EU — raises questions about long-term warranty service and parts availability; an 18-month warranty applies. [7][8]

Parts and consumables

No replaceable parts or consumables reported. The box includes a travel pouch and a 0.6 m USB-C to USB-C cable, and no user-serviceable parts documentation exists. [2]

Yearly running cost

No consumables and no subscription. Nothing in the sources quantifies the electricity cost of recharging or the battery’s lifespan in cycles, so a yearly figure cannot be computed from the available data. [2]

When it is a good buy

Under $40: strong value if the unit is new and the 18-month warranty is intact — the reference point is the $35 Woot deal (Macworld, June 2026). [9]
$41–70: fair to good — matches the $69.99 Walmart snapshot (search snippet, October 2026) and the $70 MSRP referenced by Macworld. [9][11]
Alternatives: the Anker 737 Power Bank (PowerCore 24K, 140W, $109.99 at Anker US) is the better choice when laptop charging speed matters — it charges most USB PD laptops, which the 537 may not. [12][13][14]