I'm not, mainly because I don't take my 3DS anywhere with me. The battery life is too ass.
So I might as well just get the better version.
You could try ordering a new battery for it http://www.nyko.com/products/product-detail/?name=Power%20Grip
Doesn't have to be this fancy even
http://www.digitopz.com/3ds-1300mah-rechargeable-liion-battery-and-screwdriver-without-packing-p-479.html --- Its commonly known on Gamefaqs that if anything is more evident than proven facts, its personal opinions.