Using this battery holder is easy. First, make sure you have the right battery, like the Canon LP - E6. Just snap the battery into the holder. When you need to recharge, take the battery out and use its original charger. There are four 3mm diameter mounting holes on the holder. You can use these to attach the holder to your project. For example, you can use screws to fix it. A few things to note: This holder is just for connecting and holding the battery, so you'll need to buy the battery separately. Don't try to force a battery that doesn't fit into the holder, as it might damage the holder or the battery. To maintain the holder, keep it clean and dry. If it gets dirty, you can use a dry cloth to wipe it. Avoid using any harsh chemicals on it, as this could damage the plastic.