Ok, let's clear up a thing or two. It's not a "policy" of any kind. But let's look at what we have here in the this forum. This is the "Beginner's" forum. The beginner in this hobby will usually buy a trainer plane and a basic radio (or get them together in a RTF package). The radio is going to come with a "wall wart" battery charger that they will use to recharge their batteries. After these basics batteries can actually become very complicated, more complicated than what the Beginner's forum is here for. So that's why we don't normally discuss things like Lipo and other advanced batteries.

From what I have seen and read about the newer Lithium batteries it is my understanding that they shouldn't be used after a crash, because the crash can damage the battery to the point that they can catch fire when recharged. If I am wrong I will gladly accept correction from one of the battery experts out there. But with this in mind I don't think that we need to be recommending them to people just getting started in this hobby. In addition to the dangers involved the cost of the batteries and the charger need to maintain them can also be pretty high, another reason why we usually don't discuss them here. Maybe 5-10 years down the road Lithium batteries may be run of the mill everyday equipment, but for right now they are "cutting edge" technology that is just getting started out.

Ken