Battery compatibility?

[Droidized]

I've read that the Aria' design is similar to some other HTCs, such as the Legend. Are there any battery model numbers or battery size specs that can be used to determine if batteries for other models will fit the Aria (without new back cover)?

I saw these batteries, but don't want to order if there's no way of knowing ahead of time that it will fit.

[HLI-LegendXL] Buy Mugen Power Extended Battery for HTC Legend BB00100 1800mAh

Thanks.