Sharge HyperTower 45: automotive-grade cells and a built-in cable in a $40 power bank
Sharge has launched the HyperTower 45, a 10,000mAh power bank priced at $39.90 on sale ($49.90 regular) that bundles a retractable USB-C cable directly into the chassis. It's available now on sharge.com and Amazon.com, with a launch deal dropping it to $34.90 with a coupon plus a free 60W USB-C cable, per 9to5Toys. UK availability is unconfirmed — the brand ships internationally but customs delays apply.
The cable
The built-in 60cm USB-C cord reels in and out like a tape measure, so you pull out exactly what you need. Sharge rates the mechanism at 30,000 extension cycles — roughly four years if you use it 20 times a day. That's a manufacturer claim without independent verification, but the math at least checks out. Two extra ports (USB-A and external USB-C) sit alongside the built-in cable for charging multiple devices at once, though output is shared across all active connections.
The hardware
Inside, Sharge fitted 21700 lithium-ion cells — the same cylindrical format used in electric vehicles — rather than the cheaper flat pouch cells common in mass-market power banks. The format generally delivers higher energy density and longer cycle life. Output tops out at 45W (20V/2.25A), enough to keep a MacBook Air ticking or fast-charge a modern smartphone via PD 3.0 or Huawei SCP. The bank itself recharges at up to 30W, which is faster than most rivals at this price.
The display
Four blinking LEDs tell you almost nothing. Sharge replaced them with a 1.14-inch color LCD (240×135px) that shows real-time battery percentage, input and output current, and an estimated time to full charge or discharge. It's a genuinely useful addition — the kind of information that lets you decide whether to plug in now or wait until you reach your desk.
Key specs at a glance. Image: Sharge
Worth it?
At $39.90, the HyperTower 45 costs around 30% more per mAh than comparable Anker models. The EcoFlow RAPID Pro 10K ($49.99) offers 65W output and its own built-in cable if you need more power. What Sharge is selling is the combination: automotive-grade cells, a retractable cable, a transparent design, and a display that respects your intelligence — all in a 235g package. If that package lands on Amazon.co.uk at a competitive price, it becomes an easy recommendation for commuters and frequent travelers. For now, US buyers have the clearest path to purchase.
