nah no grounding as you aren't gonna touch bare wires to the can.

As for that battery to me its way overpriced. You could get a higher spec battery off hobbyking, a cheap 200 watt soldering iron, solder, and the deans connector for the price of that one battery.

The thing with electrics if you don't want to learn to solder you will pay higher premiums for getting the battery connector you want. Soldering is one skill you pretty much need to learn to not get ripped off

And from my understandings there are only like 4 companies that make Lipo battery cells they just sell them to these other companies who throw them in a case, and slap their sticker on them. Hobby King I think is one of the only of the 4 that sell their batteries themselves. I will say I've not bought any batteries in the past year or 2 off hobbyking, but that is cause my 6 or so I got are still going strong for the times I can actually run my RC's.