ORIGINAL: therealcrazy8
Now when its time to fly would it be ok to disconnect motor from ESC, plug in battery, then plug motor back into ESC when Im ready to throw it and have it do its thing? My connectors for the motor and ESC will be external so thats why I was asking. That way I can open the plane install battery and put it back together without the prop spinning
As mentioned already, not this is not a good idea.
Your best bet is to make sure you can disconnect the battery pack when you need to.
Most Electric planes feature easy access hatches for this purpose. People who convert glow planes to electrics tend to cut their own access panels to get at the battery.
If this seems impossible consider an arming plug instead...
ORIGINAL: therealcrazy8
Second questions sense it still deals with the topic of Lipo packs, is it a good idea to get one of those ''bags'' that your supposed to put the pack in while you charge or is something like that more of a gimick?
I charge my Lipo's on a table top. I put the packs to be charged onto flagstones or bricks, in case the packs catch fire.
I have a fire detector above this area, and I also use a thermal sensor off my charger, which I periodically test to make sure it shuts off the charge current if the LiPo's start getting warm or hot.