Launch Tech Mini Power Jump Start Booster Pack

Best price: £120

Portable red and black design has a sturdy, good-quality feel. The crocodile clamps were the grippiest here, although the suitcase-style carry case could have been more compact. Still, this device charges fully in under three hours, and since our previous test the jump start capacity has increased before it needs powering up again. And while the dust cover for the jump lead port was fiddly, the three-mode torch was as good as those on our top two.