We tested the best portable jump starters from Noco, CTEK, and Battery Tender to find out which models can get your car running when its battery taps out.

Portable car battery jump starters can be essential in case of a battery emergency. If your car refuses to start from a weak or dead battery, these compact devices can jump-start your car wherever you ...

A portable jump starter gets you going without a second car or jumper cables. These picks also charge phones, and some ...

Say goodbye to portable jump starters. leagend JS300 PRO deliver battery-free SuperCap power, smart battery monitoring ...

A dead car battery is inevitable if you are a frequent driver. According to Atomik Research in a report commissioned by Advance Auto Parts, 91 percent of American motorists experience this ...

Designed for temp from −40°C to 80°C, leagend JS300 PRO and PRO-D combine battery-free starting assistance and smart ...

Grab a NOCO portable jump starter for as low as $59 and never deal with a dead battery or low tire pressure again. By Stan Horaczek Published Nov 28, 2025 7:43 AM EST Add Popular Science (opens in a ...

Successfully funded on Kickstarter, leagend JS300 PRO and PRO-D redefine vehicle starting with battery-free SuperCap ...

Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. And with this deal at Walmart, you can get one at a great price. For ...

JS300 PRO and PRO-D launch on Kickstarter October 9, combining battery-free supercapacitor technology, smart monitoring and two ways to start. JS300 PRO redefines the jump starter as an intelligent ...

Portable jump starters have proven themselves invaluable, replicating the functionality of old-school jumper cables while adding other features and being easier to carry as well. If there’s one catch ...