Meanwhile, a leaked video reveals a 1,300 mAh battery (compared to the DSi XL's 1,050 mAh battery, the DSi's 840 mAh, the DS Lite's 1,000 mAh, and the DS' 850mAh) as well as 96MB of RAM (possibly a portion made available to developers from a 128MB chip). It also shows relative size differences between the 3DS, DSi, and the DS Lite.
Source: TechSpot