External SLA Battery Pack Upgrade without Battery
Use your Pro 2 with an external battery instead of internal battery, in addition to internal battery or with a second external battery. This 3 advantages: 1. It is 13 lbs lighter so easier to lift; 2. You can leave the machine in the car and only bring in the battery to charge; and 3. Replacing batteries only takes a few minutes. Battery charger Not Included.
Note that you must have a red master switch on the bottom of your machine to use this External Battery Pack. If you have the black one instead you need to also order the 3-Way Red-Master Switch & 4-Wire Charger Jack,