Lidl have these powerbank jumpstart gizmos in at the moment, and I wondered if they were any good....£40 Lithium-ion LiFePO4 battery. It's tiny, but says it can start engines up to 2.0 Litres petrol (1.6 diesel).
I have a Lidl trickle charge battery charger and have been very impressed with it - I only use my car once / twice a week, so pop it on during the colder weather. I thought this might be handy to keep in the boot, as it's 10" x 7" in the box, just in case needed when away from home, but am I wasting money, as it's £40 towards a new battery?
These type of things go fast at Lidl and usually they only have a few for a week, then onto another promotion, so not something I can mull over too long.
3 year guarantee...... Thoughts, chaps??