The cost issue with using very high capacity and/or five cell packs is not the initial purchase price, thats not a big deal. What is a big deal is the fact many are not prepared to purchase a good capable charger that most are going to need.

Many coming to me for flying help and using high capacity/five cells packs in everycase showed up undercharged when attempting to use their wally warts cutting their flying day short.

I do not reccomend using five cell/ High capacity without the right tools to use and that is a capable (expensive) charger.

John