Small battery jump packs

[Otis Criblecoblis]

Ebay is awash with small almost pocket sized battery jump packs. Are any of them worth looking at and jump anything more than once ?

[JZZ30]

https://www.amazon.co.uk/YABER-20000mAh-Waterproof...

I bought something similar to this about 18 months ago. Its been great.

Ive used it up to 4 times starting cars with completely dead batteries before recharging it. Its also been left for around 3 months untouched and still holds a charge.

[mikeyr]

https://www.amazon.co.uk/Starter-External-Automoti...

I've got this, has started up a 2.0 diesel and a 1.6 petrol on different occasions. Seems well made and comes in nice pack. Recommended.

[OnTheEdge]

Some of those cheap packs have negligible protection for the lithium cells, there are a few youtube videos show these packs going wrong is a spectacular way when overloaded.

The NOCO Genius Boost packs are pricey but very well made.