portable jump starter

[Semple]

Like everything there are good and bad. Common sense on Amazon is to read the reviews good and bad and go from there. I got a 1000a 18000mAh rated peak generic model, paid £70 back in 2019, it has jumped around 6 different cars in that time Inc a couple of mid sized 2.0-3.0 diesels with no problem, it took around 5-7% battery on each jump, I always recharge after each single use anyway so never had to try it from say 40% etc.
It's hard to look past Noco models but there are bargains out there.

This has been my experience. We had a brand new car develop a battery fault where it wouldn't hold a charge. So had to use it probably about 8-9 times before it got into the garage for a battery swap. All done on a single charge.

Only thing I would say is keep an eye on the charge. It's not one of those things you can just stick in the boot and forget about it until you need it 12 months later.

 

[jellybeard999]

I've heard good things about the noco boost range and I'm tempted to get one myself.

 

[Chris Wilson]

A small branded new car battery and a set of PROPER pure copper core jump leads will beat all but the most expensive little jump packs. It's so hard to find GOOD jump leads with GOOD clips I make my own these days from hefty welding cable and welding clamps. Just remember to charge the slave battery every month or two.

 

[kindai]

Have one of these:

Portable Power Pack - 12v

Portable car battery chargers. These power banks get you going after a flat battery and can be used at the track as battery support to make sure the car doesn't go flat when making adjustments.

birchperformance.co.uk

Can confirm it can jump start a lambo