Road trip and travel

Everything on this site gets harder away from home. At home, a dead battery is an inconvenience with a workshop at the end of it. Four hours from home, on a Sunday, it is the difference between continuing your trip and not. The tools do not change — the margins do, and so do a couple of rules almost nobody publishes clearly.

This hub exists because the away-from-home question set is the one the rest of the category ignores. Search for whether you can take a jump starter on a plane and you get manufacturer help-desk pages and forum threads. Search for what a lithium pack does after a summer in a hot car and you get very little at all. Both have real answers.

A jump starter is a lithium battery, and lithium batteries are regulated. The number that matters is the watt-hour rating, which is usually printed on the pack itself. The FAA permits lithium-ion batteries rated up to 100 Wh; between 101 and 160 Wh you need the airline's approval and are limited to two spares. Spare batteries and power banks must travel in carry-on baggage, never checked, with the terminals protected against short circuit.

In practical terms every NOCO Boost pack sits under 100 Wh — the compact GB40 is 24 Wh, the GB70 56 Wh, and even the heavy GB150 is 88 Wh. What catches people out is a "power station" style unit with jump-start capability, which can be several hundred watt-hours and is a different regulatory animal entirely. Flying with a jump starter walks through the thresholds with the regulator's own wording, and mAh vs watt-hours shows how to convert when your pack only advertises mAh.

A lithium pack stored in a car in summer is not sitting at 90 °F. A parked car's interior climbs far above ambient, and a trunk is worse. Sustained high temperature is the main thing that ages a lithium cell: it loses capacity permanently, which means the pack that was rated with margin for your engine quietly stops having that margin.

This is the single most underserved question in the whole category, and it has practical answers — where in the vehicle to store the pack, when to bring it inside, and what to check before a long trip. Jump starter storage and heat covers it. It is also the argument for lead-acid in one specific case: a lead-acid jump station genuinely does not care about a hot trunk the way lithium does, and it is the reason those boxes still exist.

Two things change. First, engine size: a motorhome's chassis engine is frequently a large diesel, which pushes you up the pack range regardless of what you tow it with. Second, batteries multiply — a motorhome has a chassis battery and a house bank, a boat has a starting battery and often a deep-cycle bank, and those want different charging. A jump pack for an RV and a pack for a boat are sized on the starting battery, while the house bank is a charger and maintainer question.

Tire pressure changes too. RV and trailer tires run much higher pressures than car tires, and a pocket inflator that copes with a sedan will not get there — inflators for RV tires is about throughput rather than maximum pressure.

The trip kit is the trunk kit with three changes: the jump pack gets sized up rather than down, because help is further away; you add water and warmth for the terrain you are crossing rather than the terrain you live in; and you carry a phone power bank that is separate from the jump pack, so one flat battery does not also take out navigation. The road-trip car kit is the full list.

What to leave behind: anything that needs a wall outlet. A shop charger is the right tool at home and dead weight on a trip, which is the clearest illustration of why this hub is separate from the charger hub rather than folded into it.