Power problem - LaserLyte Full-Size Pistol Laser Trainer

The tool did exactly what I expected it to. Give me the feel and motion of a real Glock 19. Even the trigger pull was as real as possible. Within a few min. I was able to hit targets at 8 to 10 yards dead center without eyesight aiming. The batteries just don't last long. The three little batteries last about 60 trigger pulls, my only complaint.