2000A Jump Starter Powerbank Hummer 37000mWh 12V Car Battery Charger LED HX Pro

Bump-starting an automatic is not an option, and a set of jumper leads still needs a second car and a willing stranger. At 470 g and 161 mm long the Hummer HX Pro fits a glovebox, yet the supplier rates it to turn over petrol engines up to 8.0 litres. Size is the whole argument for it.

Small pack, big engines

Hummer lists the HX Pro for petrol engines to 8.0 litres and diesels to 7.0 litres, with up to 30 starts claimed from a single charge. Peak output is quoted at 2000 A and clamp power at 1000 A on 12 V. The peak figure carries an asterisk in the supplier's own specification with no footnote to explain it, so the 1000 A at the clamps is the number worth judging the unit on. The pack is 37 Wh — 10000 mAh — rated beyond 1000 charge cycles with a claimed nine to twelve months of standby charge. A sparkless smart cable is supplied rather than bare clamps.

A charging bench in a jacket pocket

Between emergencies it earns its keep as a power bank. USB-C Power Delivery runs up to 45 W out and 30 W in, which is laptop territory rather than phone territory, while the two USB-A ports share up to 18 W of Quick Charge. A 10 W wireless pad on the body takes a phone with no cable at all. The 12 V DC output delivers up to 96 W at 8 A for an inflator or a camp light, and the LED covers three jobs: work light, emergency flasher and torch. Hummer lists 14 protection functions in the circuitry.

Key features

• 1000 A clamp power: the delivered figure on 12 V, with 2000 A quoted as peak.
• 8.0 L petrol / 7.0 L diesel: the engine limits stated by the supplier — check yours against them.
• 470 g: light enough to actually live in the vehicle rather than the garage.
• 45 W USB-C PD: charges a laptop, and recharges the unit itself at up to 30 W.
• 10 W wireless pad: drop a phone on it without hunting for a cable.
• Sparkless smart cable: supplied in place of plain clamps.

Specifications

• Battery capacity: 37000 mWh / 37 Wh / 10000 mAh
• Battery type: lithium-ion, 1000+ life cycles
• Standby time: up to 9-12 months
• Peak amps: 12 V / 2000 A (asterisked by the supplier without explanation)
• Clamp power: 12 V / 1000 A
• Engine size: up to 8.0 L petrol, up to 7.0 L diesel (supplier stated)
• Jump starts per charge: up to 30 (supplier stated)
• Wireless charging: 10 W max
• USB-C: PD 45 W max output, PD 30 W max input
• USB-A: 2 ports, Quick Charge 18 W max total
• DC output: 96 W max (12 V / 8 A)
• Micro USB input: 10 W max (5 V / 2 A)
• Protection functions: 14 (supplier stated)
• Operating temperature: -20 °C to 60 °C
• Dimensions: 161 x 88 x 33 mm
• Weight: 470 g

What's in the box

• 1 x Hummer HX Pro jump starter
• 1 x sparkless smart cable
• 1 x USB-A to USB-C cable
• 1 x 12 V cigarette lighter adapter
• 1 x user manual
• 1 x carry bag

Before you travel with it

• The supplier states the unit is IATA approved for flight carry-on. Airlines set their own conditions on lithium batteries, so confirm with your carrier before you fly and never place it in checked luggage.
• This model covers 12 V systems only. Check your vehicle's system voltage before connecting, and follow the manual's connection sequence.
• Keep it within the stated -20 °C to 60 °C operating range and top the charge up periodically.

The obvious pick if you want one device that starts the car, charges the laptop and lights the roadside.