I got that new version and yes, it does not have the fan. Also, I think maybe the battery compartment is a different size now. It seems to allow more standard sized batteries.
I bought this one, and it fits very nicely (143x51x28mm) and is quite cheap:
ZIPPY Flightmax 5800mAh 3S1P 30C
It fits very snugly. I don't think the battery could be any bigger in any dimension. Especially the width. I don't think you could squeeze 29mm in there unless you moved some of the plastic straps.
I replaced the bullet connector with XT60, but you can also buy an adapter with wire or without:
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Adapter with wire
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Adapter without wire
Best regards,
Stein :-)