The battery pack uses four 3.5 V LiFePO 4 cells wired in series to achieve a nominal 12 V supply that stands in for a traditional lead-acid battery. The angel of second-hand purchases was smiling ...

Between the invention of the self starter and the end of the 20th Century, the best portable car jump starters weren’t ...

The trade-off is a much smaller and lighter battery pack. Lead-acid batteries are similar to traditional car batteries, ...