I am using those batteries, four of them and they work well. I did have them cleanly mounted in the rear battery case but they made the bike tail heavy so I moved two of them inside the down tube with a special aluminum and Velcro fixture that protects them. I mounted the other two on top of the down tube with a acre of Velcro which moves all of my battery weight forward. This greatly enhances the bike's handling and balance. The front suspension works a lot better and I'm not continuously bottoming out the rear wheel against the rear battery case. I don't keep the rear battery case on the bike so I have a lot more rear travel. My rear shock actually works pretty well now. In general, the bike is just a bunch nicer though it just doesn't look as good with the batteries sitting on top of the down tube. I recommend that you not use the rear case to mount batteries, however convenient it may be.
Like a dork I didn't take pictures of the "trolley" I made to put the two foot long Zippys inside the down tube. I am gonna shoot a short YouTube video on my A2B for my crazyenergyprojects video series. I'll post the link here when I get it uploaded. Also, I do need to flip the bike upside down to pull the trolley to inspect for vibration wear so I will take pics then.
altonk wrote:I have done a motor and controller upgrade on my a2b and was wondering if these are the batteries that you used in the rear battery case?
ZIPPY Compact 5800mAh 10S 25C Long Lipo Pack
I am going to be ordering a set soon.