S8 Car Battery Jump Starter, Car Jumper Starter Battery Pack for Up to 6.0L Gas & 3.0L Diesel Engines, 12V Portable Jump Box with 3 Modes Flashlight and Jumper Cable(Yellow)

I’ve bought this one for my dad. I have one just like it same name brand and it’s red and black. I’ve had mine well over a year and so has dad and they still work great! I love it were it’s small and not bulky like big ones. This thing can jump start cars with even V8 engines with no battery charge at all. I jumped a V8Gt mustang with it 8 times before battery died. So they are well worth money and the charge don’t leak down either when not on charge. I leave mine in my vehicle. U can charge cell phones with it and also has a bright flash light. Also on the boosting u have regular boost charge for smaller battery’s like lawn mowers and has a button to jump power up to start a car with. These are nice to have and it’s well worth the cost. Mine works better than my friends and he gave high dollar for his. He went bought him one to replace the one he was using cause his kept going dead when wasn’t on charge. He loves this one so does my dad and I do too. Definitely get one if u want a jumper. They are very handy and u can store them in your glove box or console

This AstroAI car battery jump starter works great and is easy to use. It’s compact, well made, and gives peace of mind in emergency situations. It starts the car quickly and holds a good charge. Overall, a very useful tool to keep in the vehicle and great value for the price.

I ordered this AstroAI S8 battery a little over a year ago. Its primary purpose would be to have an option for jumpstarting the battery in my 2004 Lexus ES330, and its secondary purpose would be to have an option for charging my phone or other portable electronic devices. At that time in late 2024, I was transitioning to a new vehicle but was keeping the 2004 Lexus as a backup. Because I wouldn't be driving the 2004 Lexus much, I felt the need to have an external battery option for jumpstarting the car battery. I haven't had to use this until now, but man am I glad I had this. After fully charging it when I received it, it had been sitting in the vehicle unused for the past 12+ months. I don't recall if I ever recharged it during the past 12 months. Regardless though, it seemed to hold a charge pretty well. I had to use it this past weekend and it appeared fully charged. The first attempt at starting the car was unsuccessful, and it did use up ~25% of the battery. I was worried that the issue wasn't a dead battery but something more significant. However, after exploring other possibilities, I decided to give the jumpstart another shot. This time it worked perfectly and the engine started up! This was really easy to use and it came in clutch. Nothing more I could ask for. Just be aware that each attempt at jumpstarting may use about 25% of the charge, so realistically you have 4 attempts at most before this external battery is drained.

Great compact jump starter. Small but powerful — it helped me start my car with a completely dead battery. Easy to use and very convenient to keep in the trunk. Highly recommend.

Used for the first time in the Texas cold of 55 degrees. Had a full charged and took two attempts as first time pressing boost only slowly spun motor. Second time pressing boost it spun my motor fine but only showed 25% battery remaining. Had no trouble starting a 6.2L gas v8 with moderate aftermarket cam Worth the buy for the price and can comfortably say it should have no problem starting most normal v8 trucks

Just received yesterday it and got a chance to test it today - a guy in the garage had dead battery. Had to use the boost option to get his car started. Considering that 25% capacity was used for that jump start, this battery pack is good for three-four jump starts so I recharged it as soon as I got home. Overall - its a keeper.

I bought this after my car left me stranded because of a dead battery, haven't used it on my car yet, but I've used it on 3 other V6 car batteries and no issues, starts very quickly without any issues. It also comes incorporated with a very strong flashlight and it also works as a power bank, the design is nice doesn't take up much space and very easy to use, it's a must for every driver.

Works solid. Purchased 2 for our car/truck safety kits. Glad I got them. They also charge many otber things with its USB ports.