for the servos i use a hitech 745. they are bash proof and work perfect. i store mine in the house so they always are empty of any fuel. i leave the battery with whatever charge it has on it but always cycle the pack one time before taking it out again. to keep them off the ground i pull the tires off and hang it on the wall in my hobby room and spray whatever bearing i can with wd-40 for protection. dont forget about the transmitter. pull the batteries out and either ditch or store them. ive never had a problem and they start up on the second pull.