First of all, we must apply heat to the rear casings, in order to soften the adhesive that holds them.

We cut a hole with the help of a thin metal tool, and then we will insert a plastic pick as this will make it less likely to scratch the case. We will open it as if it were a book, and we must remove the shield that covers the battery connector, for this we must remove the two Phillips screws (PH # 00) that hold it.

We disconnected the secondary battery to work with greater safety.

We disconnect and remove the back cover with screen with the help of a flat-tipped tool.

Like the back cover with screen, we will introduce a thin metal tool to open a small hole, and thus insert a plastic prong with which it will be less likely to scratch the case.

We extract the two Phillips screws (PH # 00) that hold the shield that covers the battery connector.

We disconnected the main battery, for safety.

We extract the five Phillips screws (PH # 00) that hold the upper cover, and remove it.

This step would not be necessary to remove the battery.

We disconnect all the flexes that are above the battery.

We inject a few drops of isopropyl alcohol into the side of the battery to soften the adhesive that holds it, and with the help of a thin and flat tool we will carefully remove the battery that we are going to change.