Tech
Power banks
Portable chargers compared on real capacity, charging speed and price.
Capacity ratings overstate what reaches your phone, since voltage conversion loses roughly a third. A 10,000 mAh bank realistically refills most phones about one and a half times. Check output wattage if you want fast charging or a tablet top-up, and note airlines cap carry-on batteries at 100 Wh, which all of these clear.
What power banks cost right now
We track 4 products here across 7 offers from 5 retailers. Every figure below comes from a price we opened and checked ourselves, between Aug 28, 2026 and Aug 30, 2026.
- Typical
- $35.49
- Most expensive
- $49.99
The middle of the 4 best prices on this page
Top of the range we currently track
Where stores disagree today
Same product, different shelf, different price. These are the gaps we found on the dates shown, and they are the whole reason to check before buying.
- Anker Power Bank (20K, 87W, Built-In USB-C Cable): $49.99 at Best Buy against $79.99 at Target. $30.00 apart, checked Aug 28, 2026.
- Anker Nano Power Bank (10K, 30W, Built-In USB-C Cable): $35.99 at Best Buy against $49.99 at Walmart. $14 apart, checked Aug 28, 2026.
All 4 products we track, cheapest first
Belkin BoostCharge Power Bank 10K
A basic 10,000 mAh power bank with one 15W USB-C port and two 12W USB-A ports, for people who want cheap backup power over speed.
INIU PowerPaw 10K Power Bank
A slim 10,000 mAh, 22.5W power bank with two USB-C ports and one USB-A port, for phone charging on a budget.
Anker Nano Power Bank (10K, 30W, Built-In USB-C Cable)
A 10,000 mAh pocket power bank with a built-in USB-C cable and 30W output, aimed at phone users who do not want to carry a separate cable.
Anker Power Bank (20K, 87W, Built-In USB-C Cable)
A 20,000 mAh power bank with 87W total output and a built-in USB-C cable, sized for travelers who charge a laptop and a phone from the same brick.
What actually differs
The specs that vary across the power banks we track. Sorted cheapest first, so you can see what the extra money is buying rather than guessing.
| Product | Best price | Capacity | Ports | Weight |
|---|---|---|---|---|
| Belkin BoostCharge Power Bank 10K | $29.99 | 10,000 mAh | — | — |
| INIU PowerPaw 10K Power Bank | $34.99 | 10,000 mAh | 2 USB-C (input and output), 1 USB-A | 181 g / 6.4 oz (INIU) |
| Anker Nano Power Bank (10K, 30W, Built-In USB-C Cable) | $35.99 | 10,000 mAh | Built-in USB-C cable, 1 USB-C port, 1 USB-A port | 215 g (Anker) |
| Anker Power Bank (20K, 87W, Built-In USB-C Cable) | $49.99 | 20,000 mAh | Built-in USB-C cable, 1 USB-C port, 1 USB-A port | 431 g (Anker) |