Jump starter A unit that is designed to jumpstart a low battery, generally in a vehicle. Includes an internal battery that makes the unit heavy,
14 to 20 pounds. Jump starters should be charged after every use, or every 2 months. Battery Chargers A unit that is designed to be connected to a 12V lead-acid battery, to charge the battery it is connected to. They charge batteries, they are not charged. They do not have internal batteries.
They are light, 3 to 7 pounds. Similarities They both have a positive, and negative cable and clamp.