I saw a post here of Ed209 getting 39 minutes of flying time at full speed on a Phantom 3 with a power mod. I’m going to buy a P4 (I have a P3A now) and I want to power mod it by connecting the extra batteries’ leads directly to the bird (so as not to have to mod every extra DJI battery). I know that voids the warranty, I’m OK with that. What are the disadvantages of a power mod? What can go wrong and how likely is it? What additional considerations or limitations do you have with a power-modded bird? I’m good with assuming some some risks, but I’d like to know what they are. I suppose the guy who got 39 minutes of flying time at full speed was pushing the edge of what’s possible, potentially at the cost of additional downsides. If I put enough extra power to get 39 minutes out of a P4, would I have additional potential problems compared to adding less extra power? I’d like to pay someone to do the mod for me, I don’t have the skills to do it myself. Where would you recommend that I go looking for someone who can do it in the US? If you’ve done a power mod yourself and you’d like to do mine for a fee (in the US), PM me.