I was wondering just how long the batteries hold a charge in the radio trans and in the planes receiver. I try to fly each weekend and have been charging the units overnight on Friday. Is this necessary or will they hold a charg e longer than that. Last week my trainner did not come so I just practiced taxing so little or now use on the batts. However it is getting real cool in the nights here and that is hard on a battery. Next question is just what type lower cost volt ohm meter would work on checking the above mentioned? I would just hate to lose a plane because of a dead radio or worse. Thanks and will be looking at the site. gphil