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Small black cube power bank with built-in USB-C plug and LCD display

FOCHEW BY1 5500mAh USB-C Power Bank

SKU CH-BYZ8-N6PQY MPN BY1

A 5500 mAh USB-C power bank with built-in plug, PD fast charging, LCD display and pocket-size design for iPhone and Android devices

  • Measurements1.0 in × 1.0 in × 1.0 in
  • Product colorA-Black
  • Built-in USB-C plug charges iPhone 15/16 series and Android devices directly
  • 5500 mAh capacity delivers about 0.9 full charge for an iPhone 16
  • Pocket-sized cube at 1.0 in × 1.0 in × 1.0 in fits any bag
  • Weighs only 0.23 lb for effortless everyday carry
  • Smart LCD shows exact remaining percentage so you always know the power left

Compact USB-C Power Bank

The FOCHEW BY1 is a 5500mAh portable charger with a built-in USB-C connector. It targets users who want a pocket-sized backup for daily commutes or short trips without carrying a separate cable. The integrated plug lets you charge compatible phones directly from the unit. A small LCD shows the exact remaining percentage.

Suits light daily top-ups; not for multi-day travel

This bank delivers roughly .9 charge for an iPhone 16, making it suitable for a single phone top-up during a workday. Buyers who need multiple full charges, want to power tablets or laptops, or require wireless charging should look at larger-capacity units. The 4 mm case-thickness limit also means users with rugged cases must remove them before plugging in.

Fits in a pocket and frees you from cables

At 3.14 by 1.45 by .98 inches and .23 lb, the BY1 slips into a trouser pocket or small bag compartment. Its built-in USB-C plug eliminates the need to pack a separate charging cord for USB-C phones, earbuds or other small devices. Recharging the bank itself takes about 2 to 3 hours via PD input, ready for the next day's use.

How it compares

Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 80% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameFOCHEW
Model nameBY1
Product colorA-Black
Size & build
Measurements1.0 in × 1.0 in × 1.0 in

Questions about this item

Does the BY1 power bank need a separate cable to charge an iPhone 15?

No, the built-in USB-C connector plugs straight into the iPhone 15 port so no extra cable is required.

Can I keep a protective case on my Galaxy S23 while using the BY1?

Yes, the BY1 charges through cases up to 4 mm thick; thicker cases such as an OtterBox Defender should be removed.

How do I confirm the BY1 is recharging at PD speed?

The LCD display shows the exact battery percentage; watch it rise noticeably within the 2 to 3 hour full-recharge window.

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