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

No Sew

No Sew BY1 5500mAh USB-C Power Bank

SKU CH-WHKX-RS01N MPN BY1

A 5500 mAh USB-C power bank with built-in plug, PD fast recharging and LCD percentage display, measuring 3.14 x 1.45 x 0.98 in and weighing 0.23 lb

  • ColorA-Black
  • Dimension1.0 in x 1.0 in x 1.0 in
  • Built-in USB-C plug charges iPhone 15/16/17 series without cables
  • 5500 mAh capacity delivers up to 0.9 full charge for iPhone 16
  • Pocket-sized 3.14"×1.45"×0.98" design weighs only 0.23 lb
  • PD fast recharging restores power bank in about 2 to 3 hours
  • LCD display shows exact remaining battery percentage at a glance

Product Purpose

The No Sew BY1 is a 5500mAh USB-C power bank with a built-in connector for cable-free charging. It targets users who want a pocket-sized backup that plugs directly into recent iPhone and Android handsets. The 0.23lb unit fits in a coin pocket and recharges itself in roughly 2-3 hours. A small LCD panel shows the exact remaining percentage at a glance.

Suitability Check

Commuters and travellers who carry a single USB-C phone will appreciate the plug-in simplicity and the 0.9 full charge it delivers to an iPhone 16. Buyers who need multiple top-ups for a tablet or who rely on Lightning or Micro-USB ports cannot use this unit. Anyone with a protective case thicker than 4mm must remove it before docking the charger. Heavy users expecting all-day power for several devices should look elsewhere.

Deciding Specification

The single figure that decides fit is the 5500mAh capacity, which yields roughly 0.9 charge for an iPhone 16 and proportionally less for larger phones. If one daily top-up covers your routine, the capacity is sufficient; if you regularly drain a phone twice before reaching a wall outlet, it is not. No other specification overrides this capacity limit.

Highlights

  • Built-in USB-C plug charges iPhone 15/16/17 series without cables
  • 5500 mAh capacity delivers up to 0.9 full charge for iPhone 16
  • Pocket-sized 3.14"×1.45"×0.98" design weighs only 0.23 lb
  • PD fast recharging restores power bank in about 2 to 3 hours
  • LCD display shows exact remaining battery percentage at a glance

Specifications

BrandFOCHEW
ModelBY1
ColorA-Black
Dimension1.0 in x 1.0 in x 1.0 in

Questions about this item

How do I plug the BY1 power bank into my phone, and what case thickness stops it from working?

Insert the built-in USB-C connector directly into the phone port; cases thicker than 4 mm block the connection, so remove them first.

What long-term upkeep does the 5500 mAh cell require?

Recharge it every few months when stored to prevent deep discharge; the LCD display shows exact percentage so you know when to top it up.

How many full phone charges can I expect before the power bank itself needs recharging?

The 5500 mAh capacity delivers about 0.9 charge for an iPhone 16, so one full cycle is the practical limit under sustained use.

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