New to electric help needed on charging at race meetings

[Wardy the Saint]

I have just got into electric 1/10th indoor. I have raced nitro for a year now and decided that electric during the winter seems a good idea. I have got myself a Schumacher Cougar and kitted it out but I have got stuck with Lipo batteries.

Now I have both stick 2 cell pack and a 2 cell saddle pack. What I would like to know is how you go on charging the saddle pack at a race meeting, it is easy for the stick pack you just take it out the car and place in the lipo sack and charge it, but how do you put the saddle pack in a charge sack with all the wires staying connected or are you ok to charge the saddle pack with it still in the car. Obviously it is safer to charge in the sack but is it a requirement safety wise that you must charge in the sack at meetings.

Cheers Allan