Things to consider before buying a battery grip
If you have not chosen a battery grip yet, here are some tips for choosing. They are not complicated issues, just points to consider that may make your choice easier.
Have I chosen the right model for my camera: Check carefully that the grip is compatible with your camera. It is easy to miss that extra zero between the Nikon D750 and D7500, or to assume that the grip for the Nikon D7000 also works with the D7500 because they are in the same series.
Does the battery grip have weather‑sealing: If your camera is weather‑resistant and copes with rain then the battery grip should too. A weather seal includes special gaskets that prevent moisture and dust from entering the grip. This allows you to be out in worse weather without risking the grip’s or the inserted batteries’ function.
Can I use AA batteries in the grip: Some battery grips have a special tray or holder for AA batteries. This means you can carry a few AA batteries in your bag if you do not have spare camera batteries. Bear in mind that AA batteries weigh quite a bit, so the weight increases significantly if you use them.
Does the battery grip use the camera’s battery door: Some grips connect to the camera via the battery door. That gives more stability, but also means you cannot use the camera’s regular battery holder. If this is the case you must check that you can have two batteries in the grip so you still get the extra battery time.
Is there a mount for a wrist strap: With a mount for a wrist strap it is easier to use the camera vertically if you secure the camera around your wrist. It is an inexpensive insurance against damage if you were to drop the camera and we recommend having either a wrist or neck strap to reduce the risks.