Car Jump Starter, FLYLINKTECH 4000A Peak 12V Portable Car Battery Jump Starter Booster (up to 9.0L Gas Or 8.5L Diesel Engine), Power Bank with LED Flashlight, IP67

Worked really well.A relatives car that hadn't been used for something like 4 months and even before that only for a couple of 5 miles trips had a battery that had gone very flat - all sorts of warning lights on the dash, electronic brake failure, couldn't lock the doors without the alarm going off.Hooked the booster pack up and after about 4 goes, it started.Something that might help others - in layman's terms as I'm no expert, but the car seemed to need a few minutes for it to reset some systems after connecting before I could start it - may be worth connecting and waiting a few minutes before trying.This was on a 2017 Citroen C4 Picasso.Another bit of advice someone gave me was to also trickle charge afterwards as well. After getting the car going and running for about 30 miles / an hour, I parked up and hooked up a battery charger someone had lent to me and it showed the battery as only between 20% and 40% charged.

Came with all the cables required and about 75% charge, topped it up to 100% and I keep it in my motorcycle tank bag.I've already used it to jump a bike that I have sitting under a cover which is rarely used and jumped a car at work for someone.Also use it to top up the charge on my Alpinestar 7x airbag between uses when I'm out and about.For the price and size it's a decent piece of kit to have.

A lovely slim jump start pack. I after taking about these things in the office, my buddy who rides a motorbike and touchy these are great but like a small one. This is very cool, small and slim but really well built, nothing to fancy just a solid quality bit of kit. It fits under his seat and he loves it. The only thing that would be nice is a bag to store it in, I used a old pencil case. Brilliant.

Recently purchased to start a Vw golf 1.6 diesel as light were left on. Found the starter to be a bit fiddley to get working as red / green light needs to flash alternatively to aid starting otherwise it won't work.The instructions says connect to battery then press button below fly leads for 3 seconds which is wrong as doesn't work. First connect to the starter by plugging in to the device socket then press and hold the button below for 3 seconds the green light will flash red alternatively then connect to the vehicle battery this will then work start car and quickly remove the charger within 30 seconds.

I have to admit i like this jump starter. For it's price it's well made, with options to charge other items.I don't know what went wrong for other buyers with bad reviews but I haven't experienced anything negative so far.I will say it could do with a better box to store it in.Did I mention it comes with a warranty, online application but covered. What more can I say 🤷

Looks like a great bit of kit. Came pre-charged so only needed a little top up before putting in the car. Worked on first time of asking on 2l diesel 2019

Seems good I haven't used it yet, but bought it for the future should I need this.Light weight and will be stored in my car, however would take it out for recharge purposes.

Handy wee thing like good for your phone and starting the car