Battery Tender 2000A Lithium Jump Starter & Power Station

A dead battery doesn't care whether you're at the boat ramp, the trailhead, or the driveway on a cold morning. The Battery Tender 2000A Power Station is the little lithium pack you keep in the truck, the boat locker, or the garage for exactly that moment. It puts out 2000 peak amps, which is enough to turn over engines up to 8 liters on gas and 6.5 liters on diesel. That covers just about everything most of us run, from a four-cylinder runabout to a full-size diesel pickup.

Inside is a 59.2 watt-hour lithium-ion battery. It's compact, it holds a charge for months, and it weighs a fraction of the old lead-acid jump boxes you used to lug around. You charge it off the included micro-USB cable, top it off before a trip, and it sits ready. No trickle charging, no spilled acid, no corroded terminals rolling around in the trunk.

Jump starting is dead simple. Clip the smart alligator clamps onto the battery, red to positive and black to negative, and the built-in protection handles the rest. The clamps guard against reverse polarity and short circuits, so you're not going to spark or fry anything if you fumble the connection in the dark. Once the engine's running, unclip, coil the cables, and drop it back in the case.

It's more than a jump box, though. You've got one 12-volt DC output for running or charging 12-volt gear, a USB-A port that steps from 5 volts up to 12 volts for faster device charging, and a USB-C port at 5 volts for phones and tablets. So when you're anchored out, camped off-grid, or just stuck waiting on a tow, it doubles as a power bank for the whole crew's phones.

There's an LED flashlight built in too. Nothing fancy, but when you're heads-down over an engine at night or walking a dark dock, it earns its keep. A word of advice from the field. It's easy to bump the flashlight on by accident in a bag, so give it a check before you stow it and you won't drain the pack overnight.

Who's this for? Anybody who runs an engine and hates being stranded. Boaters keep one in the console for a starting battery that got drawn down running the stereo at anchor. Truck and RV owners keep one for cold mornings and long-parked rigs. Powersports folks toss it in with the side-by-side or the sled. It's the kind of thing you buy once, forget about, and then you're very glad you have it the one time you need it.

This is the version without the air compressor, so if you specifically want tire inflation built in, that's a different model in the line. What you get here is the power station itself, the smart alligator clips, a micro-USB charging cable, a female cigarette-lighter adapter for running 12-volt accessories, and a zippered carrying case that keeps the whole kit together in one grab-and-go bundle.

A couple of practical notes. Keep it charged. A lithium pack that's been sitting flat for a season won't have the punch you need, so top it off every few months. Store it somewhere dry, since the USB and 12-volt ports don't love humidity or salt air. And for repeated cranks on a big diesel, give the pack a minute between attempts and make sure it's at a full charge, because peak amps drop when the battery's low or the temperature's cold.

Battery Tender built its name on keeping batteries alive, and this power station is that same idea in a portable package. It's simple, it's honest, and it does exactly what it says on the label. Keep one in the boat and one in the truck, and you'll wonder how you got by without them.