4D laptop battery for the above model is made from parts and 4D confirms the specifications similar to your laptop requirements. The battery passes all the necessary certifications like ce; rohs; cb. Henceforth confirms the best; durability and performance. It wont get drained easily and lasts longer adding high back up and extra performance. The voltage and capacity of cells meet exactly with your requirement. Designed for acer 2930 4310 4520 4710 4720 4730 4736 4920 4930 4736g 4736z.