I had fresh batterys in the TX, the two PZ planes have the ZX10 radio gear that came with the planes both on 72 mhz. the Magister has the HITEC lazer4 on 72mhz it has new batterys in it also. the lipo batt that was in the stryker was unharmed but I switched it for a fresh batt off the charger before the ESC was smoked.