YESPERBattery Jump Starter Portable, 3000A Booster Pack Jump Box for 12V Car (Up to 10L Gas/8L Diesel Engine), Jumper Cables with DSLI Safe Tech, PD 15W Fast Charge & DC 15V Port

This $80 made it so I could drop one of my family AAA cards, and it paid for itself in the first year. We have a first generation Toyota Tundra V8 that sits for long periods of time, and needs a jump 3-4 times a year. This box will start the truck 4-6 times in a row. This jumper box has also served our family well during a power outage at home, as it has enough juice to keep phones charged. It’s small size and lightweight makes it convenient to bring in and out of the house (I strongly suggest not leaving it in the car as heat can damage the batteries). I have even used it to rescue family members and strangers in the parking lot. It also stays charged for months and so I don’t worry about when the last time I plugged it in, like I used to worry about with the old lead-acid battery jumpers.Special note: there is a boot button on the side of the dongle. There is nothing in the instructions that tells you that it must be pressed in to jump most cars.Also, if you have high intensity lights or a big stereo amplifier, keep them off during your jump.

I used this exactly how you would expect someone to. I received it, charged it, let it sit for months, then used it and it worked. It held a charge perfectly over the time it was unused. Jumped the car first try with a completely dead battery that required the boost button to be pressed per instructions

Good price comparing similar items. Holds a charge Very good while stored and works well. Saved our butts camping off grid 30 miles from a town. Money well spent.

I got this and used it for jumpstarting a couple cars that ha sat for years. No problem. Then I ordered this one for my wife's car. Very simple to use. I even jumped off a 2 battery UPS truck. Can't even reverse it because it tells you its wrong.

This thing boosted my wife’s car twice on one charge. Very easy to use. Even though the alternator went out this jump pack gave her car enough charge to get her to a safe area

Very nice item to keep in the car for emergency jump starts. Nice and compact with a handy case to keep it all neat.

Having jumper cables is great but if you can't find someone to give you a jump, what good are they. This device is pretty amazing. I bought two of these, one was a little larger for my truck. Before I could put one in my truck, my son had a dead battery and it ended up in his truck. 8-) Has a 12V power out also which can power other items. This can charge a cellphone and other 5v items. Just make sure to read the manual as depending on the brand, they have a set way to use it. Some have a boost button and others don't I make sure this is fully charged before I take a road trip as well. This brand rated well on a Youtube channel too. Well worth the money but wait for a sale. Sometimes they are $30 or $40 off.

Great product. It is good to keep in the car incase you get stuck in a snowstorm or bad weather you can still keep things charged and have power.