Kennedy Ken-503-5200K
Price: £14.09 Length: 3 metres
One of the biggest problems with jump leads is packing them away after use. So, we prefer the box this set comes in to the plastic wallets often supplied. Although marginally cheaper than Screwfix’s 85886, the volt drop shoots up to 143 millivolts per metre – probably because of the smaller 16mm cores, which also limit versatility.