YGJ New Laptop Battery for Apple A1189 A1151 A1212 A1229 A1261 Macbook Pro 17", Aluminum Body as Original (Not Plastic) - 18 Months Warranty Battery Type:Li-Polymer; Voltage:10.8V; Capacity:6600mAh/70Whr; Cells:9-cell The batteries are equipped with one of the best quality grade A cells.These types of cells allow the laptop batteries to charge very quickly and have a prolonged time for discharging the power that had been backed up. With a massive charge and discharge cycle of more than 500 they provide an additional advantage of consuming the power at a lower rate while simultaneously providing a more steady output. One of the most remarkable achievements so far for the company is that all our YGJ products certified (CE-FCC-RoHS). Throughout our years of service we have used the best accredited, famous, qualified, convenient, and most reputable laboratories for testing and certifying our products. Once you buy our product, our company will offer you the best after sales service by giving you a warranty of up to 18 months. This is to ensure that we serve you with the best quality product and if at all you have any problem with our product, we are able to get back to you and assist you in a quick and timely manner. In the Electronics field, we are renown worldwide in providing highly versatile quality products with the most affordable prices in the electronics market. To ensure compatibility, please cross check if the part number (located at the back of your original battery) is listed in the Fits Parts Number list. - Ctrl + F to search the mode