Cool, I'm glad you still like them as I didn't wait for your answer, I was too eager to try them that they are already ordered. I have a mini reo with IMR 3.7 volts battery, I guess it shouldn't be too bad. At worst I have a 5 volts mod that could be better and next month I'll get a grand reo at 6 volts so I should be all set to test them fully.