I don't know where to start installing my own Smart-Battery replacement for UPS 1500?Then relax yourself!Installing the battery into the battery backup unit has never been so easy before.The installation does not require a technical or mechanical background, and the device is designed to easily replace the battery for ordinary people on a daily basis.The SUA1500 device can only use a replacement battery that is specifically customized for this application.The specific battery type is called RBC7 replacement battery.It can be a bit difficult to find this battery, and the two main ways to find RBC7 batteries are either to buy them through a local battery dealer (they will have one if you're lucky) or a simpler way, through the Internet!Anyway, before we start opening the Smart-battery boxUPS 1500 you need to purchase RBC7 replacement batteries for yourself.To start the installation, we must first remove the used RBC7 battery from the device by entering the battery box.In order to do this, we must first remove the panel from the front of the unit.The panel will accommodate all the function buttons of the unit as well as the indicator light.This board is fixed to the unit by several pressure clamps placed around the panel, you have to put a little muscle in it, but it will eventually fall off!After removing the panel from the SUA1500 unit, you will face a steel lock that seals the door of the battery room.To enter the compartment, you must remove the two screws at the top of the latch.After removing these screws, you can now pull the latch down to show the depleted RBC7 replacement battery.To start removing the battery, you need to slide the battery out of the unit first until you have a clear exposure to the gray anderson clip that connects the battery to the SUA1500 unit.Once you can get this plug, you can disconnect it by simply pulling the wires on each clip.Once you separate the two Anderson clips, it's time to remove the battery from the unit.Installing the fresh RBC7 replacement battery into the device is as simple as taking out the used battery.You must first slide the battery far enough to connect the gray Anderson clip to Smart-UPS 1500 unit.Once a connection is established between the battery and the unit, you can slide the rest of the battery into the compartment.When the battery goes as deep as possible into the unit, the time to seal the metal latch is the time to fix it with two small screws we removed earlier.The last step of the installation process is to reconnect the panel to the device and the SUA1500 battery installation is over!