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Head to head

Anker 737 vs Anker Prime 20K 200W (2027)

Two Anker flagships compared: the 737 with 140W and 24,000mAh against the Prime 20K with twin 100W ports, for 2027 laptop travellers.

TGBy TrueGear Research TeamIndependent editorial teamLast updated How we researchResearch-based assessment · Power Banks
Specs verified against manufacturer docs
No paid placements
Independently funded by readers
Updated 2026-11-01
Anker 737 vs Anker Prime 20K 200W (2027) featured graphic

What owners report

Most praised
  • The display ends the guessing about how much charge is left and how fast a laptop is actually drawing
  • It keeps a laptop going through a full flight while a phone tops up beside it
  • The brick shape slides into a laptop sleeve pocket without the cable spaghetti of older packs
Common complaints
  • Owners notice the weight the moment they move it from a backpack to a jacket pocket
  • Recharging it at full speed demands a charger and cable many buyers did not already own
  • The top modes of output are wasted on phones that cap out far below 140W

What owners report

Most praised
  • Running two laptops at once without either dropping to trickle speed is the trick owners keep describing
  • The per-port wattage readout settles arguments about whether a cable or a charger is the bottleneck
  • Steam Deck owners use it as a dockside battery that outlasts the handheld's own cell by hours
Common complaints
  • The missing wall charger surprises buyers who expected a complete kit at the premium price
  • Its weight earns comments from travellers who packed it as a pocket item instead of a bag item
  • The display's early percentage readings can look pessimistic until the pack has been through a few full cycles

Our recommendation

Buy the pack that matches the number of laptops in your bag. One laptop: take the 737, whose single 140W port beats either Prime port alone and whose 24,000mAh reserve outlasts the Prime's 20,000mAh. Two laptops: take the Prime, whose twin 100W ports are the only way here to feed both at full speed. Both have live displays, both fly in cabin baggage, and both cost a premium, so the decision is genuinely about your bag, not about quality.

Single-port wattage versus twin-port wattage

The 737's one USB-C port reaches 140W, which covers laptops that ask for more than 100W, including larger slim machines. The Prime's ports reach 100W each, which covers two ordinary laptops at once but nothing above 100W on a single machine. A one-laptop traveller with a hungry machine wants the 737; a two-machine traveller wants the Prime, full stop.

Capacity and refill speed

The 737 holds 24,000mAh against the Prime's 20,000mAh, a meaningful edge on multi-day trips. The Prime answers with a 100W refill against the 737's 140W-capable input, and in practice both refill fast on a suitable charger, with the Prime's listing quoting about 50 minutes. Capacity favours the 737; turnaround is close enough to ignore.

Size, weight and what ships in the box

The 737 is longer and heavier at 6.1 inches and about 22 oz, against the Prime's 4.99 inches and 1.15 lb, so the Prime packs a little easier. Both ship a USB-C cable, and neither ships the wall charger its fastest refill assumes, so budget for a high-wattage charger with either purchase.

Displays and extras

Both displays report capacity and live wattage, and both are genuinely useful rather than decorative. The Prime adds an optional charging base, sold separately, for drop-on recharging at a desk, while the 737's display adds recharge-time estimates. Neither extra decides the purchase; the port layout does.

Choose Anker Anker 737 Power Bank (PowerCore 24K) if…

  • One laptop is the whole load, especially if it wants more than 100W
  • Maximum capacity for multi-day trips matters more than twin ports
  • A recharge-time estimate on the display appeals to you
  • You already own a 140W charger and a 5A cable

Choose Anker Anker Prime Power Bank 20,000mAh 200W if…

  • Two laptops, or a laptop plus a Steam Deck, travel together regularly
  • Twin 100W ports at once is the feature you cannot get elsewhere here
  • A slightly shorter, lighter brick packs better in your bag
  • A future charging base for desk use appeals to you

Questions, answered

Which one charges a MacBook Air faster?

Both charge a MacBook Air at full speed, since the Air needs well under 100W. The difference appears only with hungrier laptops above 100W, where the 737's 140W port pulls ahead, or with two laptops, where the Prime's twin ports win outright.

Which one is better for a Steam Deck?

Both work well, and the Prime's owner reviews mention Steam Deck use often. The Deck draws far less than either pack's maximum, so the choice comes down to capacity, where the 737 wins, versus twin-device use, where the Prime wins.

Do I need a special charger for either?

For the fastest refill, yes: a high-wattage USB-C charger, 100W for the Prime and up to 140W for the 737, plus a 5A cable for the 737's top speed. A smaller charger still refills both, just more slowly.

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