Portable 12 V equipment: jump packs and inflators.
What they publish that others do not
An operating temperature range on the jump starter — −20 to 50 °C (-4 to 122 °F) — which is the specification that matters on a tool bought for cold mornings, and one almost nobody states.
And on the inflator
A programmable preset with unit selection and a published maximum pressure. The preset is what makes an inflator usable without standing over it; the unit selector is what stops a bar-and-PSI mistake.
What is still missing
Watt-hours on the pack, and duty cycle on the inflator. Both are the figures that would complete each product.
12 V · 10.3 bar (150 PSI) stated · programmable preset with unit selection · compact storage
A 12 V inflator with a programmable preset: choose a unit, set a pressure, and it inflates to it — which is the feature that makes an inflator usable alone.
Best for: Four tires, one after another, without standing over the pump.
329 g (11.6 oz) stated · −20 °C (-4 °F) to 50 °C (122 °F) stated · 10 built-in protections · QC 3.0 USB output
The pocket one: 329 grams, ten stated protections and a working range from −20 to 50 °C (-4 to 122 °F) — bought for the winter morning rather than for a headline current figure.
Best for: A small petrol car, and anyone who would rather carry the pack than store it.