PriorityStart HD, from BLI International, is a totally automatic battery protection system that disconnects at 11.7 volts- stopping a dead battery, and then reconnects with simple load change. The HD unit handles heavier loads, 60 percent increase to 1600 starting amps and 400 continuous amps. The increase to the contact disc, the gears, and holding nut, have strengthened the load capability and reduced the stress from heavier loads. Other improvements include: Increased points of connection, brighter top LED for easy viewing, motor/gear shielding strengthening operation, modified top post easily accepts side mount installation. Still only 3 easy connections with no hard wiring, and no buttons to push.
