| Pros | Cons |
|---|---|
| Excellent performance | Expensive |
| Easy-to-read LED display | Heavy |
The Anker 737 Prime Power Bank isn’t new but even in 2025, it still kicks a ton of butt. We ran it through the same brutal tests as every other pack: voltage accuracy, efficiency, recharge time, thermal output, and real-world usage. And despite its age and steep price, it still is one of our top pics for a power bank. Here’s why it still deserves your attention, especially if speed matters more than stats.
Looking for power banks that actually perform? Check out our Top 5!
How We Test
We’re reviewers, not influencers. What does that mean? It means we test everything our way before we share the results. None of the content we produce is sponsored so you don’t have to wonder if we’re just trying to sell you something.
For battery banks in 2025, here’s what what we tested:
- Charging protocols – We did timed charge tests for every protocol that the battery bank claimed. For example, a battery bank might advertise PDO’s of 15W, 27W and 60W. We would run voltage stability tests for each rate. We do the same for PPS as well.
- Temperature – We captured the temperature of the battery bank for all the charge tests and noted any overheating, throttling or failure to maintain the chosen output.
- Capacity test – We fully charged and discharged each battery bank using a PD controller and an e-load. This method pushes the battery harder than normal use, revealing when it fails to maintain proper output instead of just dropping to a lower voltage.
- Recharge tests – We measure and timed the amount of energy required to fill the battery bank completely. We didn’t rely on the counters on the packs, instead we had hard cutoffs coded into our test programs
- Efficiency – From our charge/discharge tests, we calculated several efficiency values to see how much usable energy you get compared to how much went in.
Design
This is the 20,000mAh (72Wh) version of the Anker 737. It comes with two USB-C ports and one USB-A, all neatly arranged in a compact, matte-ridged chassis. It also pioneered the bright LED smart display, which remains one of the best on the market. The display is clear, informative, and instantly responsive.
Output maxes out at 100W, and it supports 7 PDOs. PPS is limited to 3A, which is fine for phones and tablets but falls short for devices that support 5A PPS. Some newer banks have stepped up in this department, but the Anker still delivers excellent multi-device flexibility for most users.
Performance
Anker 737 isn’t the most efficient as it delivered just 44.86Wh out of the advertised 72Wh, landing at 62.3% efficiency (ranked 10th). Fixed PDO accuracy was average at 91.4%, while PPS performance was excellent, scoring 87.6% (ranked 7th).
Where it truly dominates is recharge time. Thanks to 100W input support, the Anker 737 fully recharges in just 70 minutes making it the fastest charging pack in our test group. The next closest competitor needed 90 minutes. If you need to get back on the go fast, this bank crushes it. If you wanna how the others fare against the Anker 737, check out our Top 5 list!
Thermals
Thermally, this bank ran below average during discharge (43.8°C) and average during recharge (35.6°C). No issues to report as it handled high loads without any thermal hiccups or throttling.
Value
Now let’s talk price: $185. That’s not cheap. Has a price-per-Wh of just $0.24 (the worst), so you are spending a pretty dollar for serious power. For people constantly on the move, the ability to refill a power bank in just over an hour might justify the cost. But for most users, it’s a luxury rather than a necessity.
Verdict
Would we recommend it? That depends. The price is steep, and newer banks offer more for less. But since we already own one, it’s the pack we reach for when we need fast turnaround or reliable 100W output. The Anker 737 might not be the flashiest anymore, but it’s still one of the most dependable and fastest chargers in the game.
Looking for something more affordable in 2025? Check out this list!