Acer Aspire One AOD255E-13648 is the blue version of the Aspire One AOD255E-13Dbb series. It is also called AOD255E-13648 Aquamarine.
It has the same configuration and technical specifications as Acer Aspire One AOD255E-13639 including 3-cell Lithium Ion (Li-Ion) 2200 mAh battery. If you are interested in the same netbook, but with 6-cell Lithium Ion (Li-Ion) 4400 mAh battery, you should know that there are 4 models having this feature: Acer Aspire One AOD255E-13633 (Ruby Red), Acer Aspire One AOD255E-13444 (Diamond Black), Acer Aspire One AOD255E-13410 (Aquamarine) and Acer AOD255E-13899 (Diamond-Black Chassis).
So, the only difference between Acer Aspire One AOD255E-13648 and Acer Aspire One AOD255E-13639 is the color. The first one is blue (Aquamarine) and the second one is black (Diamond Black).
Read the full Acer Aspire One AOD255E-13639 Review.