Aukey Spark Sling 20000 Compact Fast Charging Power Bank with Built-in USB-C Cable (PB-Y48)

The only way out of this power bank that its description names is a cable you cannot detach. Aukey's Spark Sling PB-Y48 carries a USB-C lead built into the body, which is rather the point — nothing to pack, nothing left behind on a kitchen bench, nothing to lose. It also means the connector is fixed for the life of the unit, and this page never says how long the lead is, how it stows against the shell, or what happens to the bank if the lead eventually fails.

Twenty thousand milliamp hours, and nothing else measured

Capacity is quoted twice as 20,000mAh and it is the only thing here that measures the hardware. There is no output rating, no input rating, no voltage, no protocol name and no watt-hour figure. Neither is there a weight or a dimension, even though the shell gets called compact and lightweight twice over, in those same two words each time. So the one thing you can compare this against another bank on is how much charge it stores, and everything about how quickly it moves that charge is left open.

One lead named, three devices claimed

The feature list ends with the line charge 3 items at once. The paragraph above it names a single output, the built-in cable, and no port of any kind appears anywhere in the description. Three simultaneous charges need three connectors and this listing accounts for one. Those two statements sit unreconciled in one description, and we present neither as a fact about the hardware.

Key features

• Captive USB-C lead: the charging cable belongs to the unit instead of travelling beside it.
• 20,000mAh cell capacity: stated twice in the description and consistent both times.
• Repeat charges claimed: the supplier says it will charge phones, tablets and other USB-powered devices multiple times, without saying how many.
• Small-shell design: described as compact and lightweight for carrying, with no dimension or weight behind either word.
• Self-protection asserted: the supplier claims safety features guarding against overcharging, overheating and short circuits.

Specifications

• Model as sold: Aukey Spark Sling 20000, PB-Y48
• Charge stored: 20,000mAh
• Attached lead: USB-C, built in

Open questions on this bank

• Fast charging is what the product is named for, and the search summary echoes that name, while the description avoids the word entirely. Wattage, amperage, voltage and charging standard are all missing, so no rate exists here to weigh against anything else.
• The feature list says three items at once and the description names one output. Take neither as settled until you can see the unit.
• No watt-hour rating is given and the cells are never described — not their chemistry, not their number. The search entry calls the bank travel-ready, and a carrier asking for a watt-hour figure will not find one here.
• Not one certification is claimed here — no Australian mark, and no overseas mark either.
• Nothing is said about charging the bank itself: no input rating, no time to full, and no statement of whether it will charge and discharge at once.
• Nothing qualifies the capacity figure. The supplier offers no margin against it, no band and no allowance, and we have added nothing of the kind.
• Neither a size nor a weight reaches this page, which leaves compact and lightweight standing as the supplier's adjectives and no more.

What the description will support is a large-capacity bank with a permanently attached USB-C lead. Everything about speed, ports and certification is either absent or contradicted, and a buyer who needs any of those answered will not get it from this page.