I'd listen to Mr. Moderator; these manufacturers stay on the side of caution, Futaba tells us don't use Lipos in their Radios, yet hundreds of people do and never have a had problem, Futaba once said that there was nothing wrong with their 14 Channel 2.4 receivers, yet it was shown that they shut down when exposed to normal operating heat found in fuselages, and if there wasn't anything wrong with these receivers, then why did they start making them different, anyways, ask around and see what others have done.