When it comes to helping a car with a dead battery, there are two approaches to take – a portable jump starter or a battery charger. Both of these products bring your battery (and car ...

Like every other lithium jump starter we've tested, it has reverse polarity detection, alerting you if you connect the clamps ...

If you're planning a drive, a dead battery can really bring your plans to a halt, not to mention it can also be pretty dangerous. Keeping a portable jump starter in your vehicle can bring you ...

If you buy something via one of our links, we may earn a commission. The Avapow 4,000A Car Battery Jump Starter is on sale for as low as $68, up to a 73% discount on its normal price of $250.