quote:

Out of interest, would it be worth having a cooling fan next to the cells to keep the temperature down?

Not really. the cardboard like material the housing is made of is not very good at thermal tranfering so any cold air blowing next to it will hardly pick up any heat from the cells. For the little cooling you might get by adding a fan you are almost better off just adding another pack. Making sure the cells do not exceed 65 degrees in the first place is the better option imho.

Do not confuse Lipo with LiFe or A123, those are really 2 different types of batteries and not allowed in anything larger than feathers.