OK, so I took my car out for a spin today, new receiver pack and all. After about an hour of driving time, the pack still seems to have plenty of 'juice'. This might be a dumb question, but it occurred to me: should I just keep using the pack until I see a discernible drop in performance because of the pack being run down? Or is it OK to recharge it after each run, even if it still has a partial charge? I have one of those vintage, Hobbico AC/DC chargers that has a fifteen minute timer and an amperage gauge that seems to always read about 3 amps.