Ours are still holding up nicely, which I think really says something since we are talking about tank commanders who are four and six years old. There have even been a few play dates with friends and these FOV tanks keep on ticking.
Really like the auto-power-off feature, too. My boys are good about remembering to shut them down, but when they forget it's nice not to run the batteries down.
The IR battle system works nice, too. I can't say enough good things about these tanks, they've really been a win for us. I never thought I'd like R/C tanks so much but hey! They're a blast