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🚗⚡ Power up your ride & your devices—never get stranded or powerless again!
The MAXTOOLS JSL240 is a sleek, portable 12V lithium jump starter delivering up to 1500A peak current, perfect for petrol and diesel engines. Featuring a robust 9000mAh battery, dual USB charging ports, and a built-in LED torch with emergency modes, it weighs just 350g and recharges fully in 3 hours. Designed for professionals and enthusiasts alike, it ensures reliable starts and device charging wherever you go.









| ASIN | B088TYQCKD |
| Amperage | 500 Amps |
| Battery Capacity | 9000 Milliamp Hours |
| Battery capacity | 9000 Milliamp Hours |
| Battery cell composition | Lithium |
| Best Sellers Rank | 142,960 in Automotive ( See Top 100 in Automotive ) 405 in Car Battery Jump Starters |
| Brand | MAXTOOLS |
| Brand Name | MAXTOOLS |
| Compatible with Vehicle Type | Passenger Car |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 469 Reviews |
| Included Components | Starting and charging cables, user manual |
| Item Weight | 350 Grams |
| Item weight | 350 Grams |
| Manufacturer | MAXTOOLS |
| Manufacturer Part Number | JSL240 |
| Model Number | JSL240 |
| Peak Output Current | 1500 Amps |
| Vehicle service type | Passenger Car |
| Voltage | 12 Volts |
| battery-cell-composition | Lithium |
R**N
The must-have for emergency use.
MAXTOOLS JS500-UK 2200 A 22 Ah, Professional Portable Jump Starter for Cars and Vans, Suitable for Diesel and Petrol Engines, with LED Torch, USB Port and Starter Cables £149.99 This is a must-have device for the winter months; only a few days after purchase I needed it to start our car that had a battery problem, which it solved in seconds flat. It is simple to use and has a built-in charger you connect to the mains using the supplied kettle lead. No more looking for the charger when the jump starter needs charging. While charging, you can display the level of charge by pressing a button to illuminate charge-level led lights on the front of the Jump Starter. The instructions say that it is safe to leave to on-charge permanently, but I found this was not necessary. After both starting our car and plugging-in a tyre compressor to the built-in cigar lighter socket to blow up the car tyres, the unit was still displaying full-charge on completion. Looking at the unit now, a month after purchase, it is still showing full charge. The unit securely stores the jump leads either side of the unit to ensure they do not touch, and it is compact enough to carry in the boot of the car. It also features a switchable bright Led light to assist with any usage during darkness. Overall, every car owner should own this must-have device. It would even be useful in the home during a power failure as you can use the cigar lighter socket to power lights, and the installed USB socket to power or recharge your phone in an emergency. I unhesitatingly recommend the purchase of this Jump Starter to others.
B**4
Just what you need for that weekend car, that sits around idle for several weeks
Bought as I have a small 2 seater sportscar, that does not get the use it should and therefore the battery can go flat if not used for a couple of months. looked a many and decided on this one, not the cheapest, but it did offer me a 15 % off voucher. Ordered with prime and it arrived the next day. I followed the instructions to charge and then read through the instructions twice before using it, it had been sitting charged for a couple of weeks when I went to use my car this weekend, and surprise surprise the car would not start, so here is my chance to see how good the purchased is, was it worth the money ?? I popped the bonnet and connected the leads, pressed the boost button on the charger , got back in the car and turned the key, car started with no hassle. For me that is a success. I did notice that the booster pack now shows 75 % charge, which is what i would expect after a jump start , so will charge again before putting it away. Small, powerful and easy to use, very pleased with my purchase
R**J
Excellent jump starter, has easily started everything thrown at it
This is an excellent product at a very good price. I have a lot of old classic cars that sit around for months on end and it has started everything from a Fiat 500 to a 7.2 litre Jensen including along the way, a large diesel pick up truck, Porsche Boxster and an old Ducati. It’s very sturdy and well built. I lost the cable to charge the pack itself (thankfully it holds charge for a very long time) and the vendor sent me a new one free of charge without any quibbling Highly recommended
G**J
Brilliant booster box
Brilliant booster box starts up my tractors 4x4 pick up and atvs! The light on front is broke because it tipped over and broke it, another problem that I found was not with the unit directly but the charger lead it is an American type charging lead wich I had lost tried contacting maxtools directly for a replacement charger lead they ignored me contacted cable specialist in the uk they didn't have anything after finding a charging lead in USA wich was only £7 but with tax and everything else with importing it into the country would have been around £30 fortunately I found the charger lead in the end, so as booster boxes go this is amazing will booster vehicles small to large no bother at all but if somthing goes wrong you will hear nothing back from max tools.
T**O
Excellent Product
Excellent jump starter. I have a 2021 Toyota Yaris and being a hybrid it has a small 12V battery. I find that if the car hasn't been used for about 4 days, I get the message 'Battery Low State' and the brake pedal pulses and the hybrid system will not start. First time I called the AA. So I purchased this jump starter. It sat in the boot of my car for about 3 months and then I had the same problem. Used the jump starter and I was up and running within a few minutes. Great bit of kit, and holds plenty of charge for months. Used it again today (2nd January 2024) to jump start my Toyota hybrid as battery was too low after the xmas period. Such a great piece of kit and holds a full charge for well over 6 months if not used. Well worth investing in one.
P**R
Does not work. Period.
Price was good, reviews were good, specifications were good, so I bought three. One each for our two cars and one spare. It was not long before I needed to try it. The car internal light had been left on and the battery was down to 10 volts. The engine management system on our Subaru Outback wants 12 volts or it will not even attempt to start the engine. I put on one of the powerpacks. The engine still would not start. With the powerpack connected, the voltage had only gone up to 11 volts so the engine management system still would not start the car. An increase in battery voltage of one volt means the powerpack is only putting out about ten amps, nothing like the 800 amps or peak 2400 amps claimed. It is not as though this one was faulty. I had three of them and the result was the same with all three. A total scam. Don't bother with this one.
A**R
Excellent purchase
We have had this pack for 1 year now. We have a T6 campervan which my other half keeps forgetting to turn off the fridge in when we leave it. We have therefore had to jump start it a few times. My neighbour has also borrowed a few times. Always works great. Only negative is that to charge it you need to use the supplied charger and not a universal one, but there is no way to store them together. Overall, really good battery life, easy to use, sturdy and been a great addition to the van for the last year.
F**O
Brilliant
Well worth it. Used mostly on other peoples cars lol. But works every tine and helped quite a few people. Better than jump leads or batt chargers in a pinch.
W**E
Fácil uso y útil
Estupendo, fácil de utilizar, saca de un apuro en un momento, con una carga vale para varias veces. Muy bueno
G**E
Soddisfatto
L'ho utilizzato su suto con batteria scarica ed è partita al primo colpo. Viene consigliato di ricaricarlo ad ogni utilizzo, ma devo dire che dopo averlo utilizzato, in fase di ricarica campeggiava un solo led. Utile anche la lampada torcia e la possibilità di ricarica lo smartphone. Il manuale di istruzioni è molto chiaro.
M**2
Trés Bon
Il fonctionne, très bien, facile et rapide à recharger. Recommander
C**N
Muy buen producto
Lo recibi a 80% de carga. Lo cargué hasta 100% en unos 30 minutos. Mi bateria estaba muerta, y he podido arrancar mi moto (500cc) inmediatamente. 4 días más tarde, de nuevo sin bateria, y sin recargar el dispsotivo, he podido arrancar sin problema de nuevo. Y todavía me quedan casi 100% de carga. Muy contento. Además, es un formato muy compacto que cabe abajo de mi asiento.
A**É
Génial
Pour ce prix vous vous dépanner en 5 secondes. Bien laisser charger 24 heures avant premier emploi. Je ss bluffé et je recommande
Trustpilot
1 month ago
5 days ago