NOCO GB150 Boost Pro 3000A Lithium Jump Starter

A dead battery at the ramp, or worse, a couple of miles out with the sun getting low, is the kind of thing that ends a good day early. The NOCO GB150 Boost Pro is the tool that keeps it from ending. It's a 3000 peak amp lithium jump starter small enough to live in a console cubby, and strong enough to crank a 9 liter gas engine or a 7 liter diesel back to life. No second boat, no fishing around for a good ground, no favor from the guy in the next slip.

Here's what makes it earn its spot aboard. The GB150 runs on an 88 watt hour lithium-ion pack, and on a single charge it'll deliver up to 80 separate jump starts before it needs topping off. So this isn't a one-and-done gadget you use once and forget. Keep it charged in the spring, throw it in the gear bag, and it'll ride out most of a season of dead-battery moments without a recharge. For a big-block inboard or a diesel that's been sitting since last fall, that headroom matters. Small jump packs run out of punch fast on a cold, high-compression engine. This one doesn't.

We like it for boats, but it doesn't care what you point it at. The same unit that starts your outboard's cranking battery will start the tow vehicle in the driveway, the trailer's dead accessory battery, a generator, a tractor, or the RV out back. 9 liters of gas and 7 liters of diesel covers just about everything a boater also owns. That's the honest appeal of a unit this size. One tool, the whole property, plus the boat. And because it's lithium, it holds a charge on the shelf far longer than the old lead-acid boosters ever did.

Beyond starting, it doubles as a power bank and a work light. There's a 5 volt USB-A output for charging a phone, a handheld GPS, or a VHF while you're sorting out the real problem. It recharges over a 12 volt DC input or a 5 volt USB-C input, so you can top it off at the helm, in the truck, or off a standard charger at home. And the built-in flashlight is genuinely useful, not an afterthought. Ten ultra-bright LEDs with seven modes, including emergency SOS and a strobe, which is exactly what you want when you're leaning into an engine box at dusk trying to find the terminal you dropped a wrench near.

Cold mornings are where a jump starter like this really earns its keep. Lithium chemistry holds its output better in the cold than the bargain lead-acid boosters, and the 3000 peak amp ceiling gives you cranking headroom that a smaller pack just can't touch. A stiff, cold diesel or a gas engine that's been sitting all winter pulls hard on the first turn, and that's exactly the moment a weak booster gives up. The GB150 has the reserve to spin it over anyway. Stow it in a dry locker, keep it charged, and it's ready when the ramp is cold and quiet and yours is the only truck in the lot.

One thing to be clear about, because we don't oversell here: the GB150 comes without an air compressor. If you specifically need a jump starter that also airs up a trailer tire, this isn't that model. What you get instead is more starting power and less to go wrong. For most boaters, cranking amps beat a built-in pump every time, and you can keep a cheap 12 volt inflator in the truck for tires. Simpler tool, fewer failure points, and every bit of that 88 watt hours goes toward starting instead of running a motor.

In the box, NOCO includes the heavy-duty jumper cable with HD clamps, an XGC 12 volt male adapter, an XGC 12 volt female adapter, an XGC extension cable, a micro USB cable, and a microfiber storage bag to keep it all together and rattle-free in the locker. Charge it, stow it, and forget about it until the day a battery lets you down. That's the whole point of carrying one.