Testing a tiny electrical miracle

By the staff of Dirt Wheels

This is everything that comes in the kit with the Antigravity Micro-Start XP-1 jump-starter kit. It has a wide variety of computer-charging adapters.


Once we were happy to have jumper cables on hand when our hauler vehicle or our electric-start off-road machines needed a shot of electrons to get started. Later we thought it was cool when we had a 5–10-pound jump box for the same purpose, but now we have the Antigravity Batteries Micro-Start XP-1 jump-starter. The 1-pound device comes in a carrying case that looks like a slightly bulky cover for a tablet. The actual jump-starter unit is smaller than a paperback book, but it’s about a third larger than an eyeglass case. With the plug-in jumper clamps attached, this little box will start almost any gasoline engine up to 6 liters and diesels up to 4 liters! Obviously, it will start quads and UTVs with ease. And, that is the least that this unit will do.


This jump-starter has lithium-ion cells and circuitry inside. These cells are energy dense but light compared to lead-acid cells. Our XP-1 came partially charged, but needed to be fully charged before we used it. After that initial charge, we jumped some quads, then left it dormant for 60 days. For most of that time it was inside a car, so it was exposed to heat and cold. After that time, it still shows fully charged.

One side of the unit is the business side. It has all the various ports, the state-of-charge LEDs and the on/flashlight button.

One side of the unit is busy with ports and buttons, and one end has a powerful flashlight while the rest of the sides are smooth. The top and bottom have printing on them. The busy side has a power button and five LEDs that display the state of charge. Next is a charging port, then a 12-volt, 10-amp output and a 19-volt, 3.5-amp output for popular laptops. Next are two USB ports. One is 5 volts and a 1-amp output and the second is 5 volts and 2-amp. Finally, there is a rubber cover blocking access to the jumper cable port. Holding the power button turns on the flashlight, and a subsequent push switches the flashlight to flashing and another push selects a slower flash that is an SOS signal.

We charge the unit from the power point in our car, so we never leave it in the house charging when we need it on the road or trail. Included in the case are the charging cord and a multi-cord with four leads for all popular phone-charge plugs. Another cord and a strip of eight adapters let you power nearly any laptop. Impressed yet? We are! This little jumper/charger feels like quality equipment, and that build quality and the crazy range of uses justifies the $149.99 cost.

Everything in the starter kit fits nicely into the zippered, folding carrying portfolio. It is very compact and light, so it stores easily.



The Micro-Start turns off automatically if you are not using it. It is a little challenging to get the jumper cables and plug back into the mesh pocket it comes in inside the carrying case, but otherwise everything about the Micro-Start XP-1 is easy to use and store. We definitely have found a hundred uses for it.


Antigravity Batteries is an impressive company. It is amazing the utility and performance it has managed to pack into such a small package! Like most off-roaders, much of our travel is in remote and rural areas without a lot of cell service or service establishments. Being able to jump our own vehicles and power our electronics is truly amazing. Go to or call (310) 527-2330 for more info on their whole line of products!

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