It depends on your needs.Choose jump starter JS-351 if you want faster USB-C PD charging, a smart screen, and a lightweight, high-tech power bank jump starter.Choose jump starter JS-383 if you're looking for an all-in-one emergency tool with AC inverter output and strong power to supply your electronics.

When selecting a portable emergency jump starter, key factors for choosing the best jump starter. If the jump starter is reliable 12V lithium-battery,the charging specifications you should learn more. Jump starter accessories like jump cables etc store power that can be output directly toward a dead battery. These are a much better option than jumper cables as they eliminate the need for another car.

With 100W USB-C PD fast charging, the portable jump starter JS-351 doubles as a powerful portable charger for digital devices—ideal for work or travel.And 2 ways fast charging time is about 1 hour.

Before jump-starting a car, connect the jump starter's clamps to the battery terminals of your 12-volt vehicle.This allows the portable battery charger recharge the dead battery. It recommends jumping start a 12v car about 30 seconds.