For ZS740 and ZS720 pitching machines. Provides additional capacity for heavy duty pitching applications. It will power approximately 1000 pitches at 40 mph, or 600 pitches at 60 mph. Mounts on the standard tripod, protected and out of the way. Charger and mounting bracket included. Size: 8″ x 4.5″ x 7.5″ – 11 pounds.
Note: most users do not need the external battery