I recently purchased a ball machine (will not state brand) that advertised a battery life of approximately 2 hours court time. However, when I used it, it barely lasted 45 minutes! I did not use high speeds or the oscillating function so I was perplexed as to why so little actual court time. It was also fully charged. The dealer stated that likely because it was a cold day-it was 33 degrees the day I used it-is why the battery life was reduced. I understand that factors such as the weather can affect battery time but to reduce it by 50 percent? It was a brand new machine and my first time using it. Has anyone had this experience or heard of others having this problem in cold weather or should I try another brand? Your help is greatly appreciated.