Button cells are useful for all sorts of smaller or low-power devices, but are ones that are the same diameter, like a CR2025 ...
A close-up of a hand holding a car fob next to a black vehicle - M. Taupiq Nur Hidayat/Shutterstock If you're old enough to remember when cars had simple key ignition switches and not start buttons, ...
GP-VPT2BT comes with a button battery ' CR2032 ' and a carrying pouch. There are two types of GP-VPT2BT, white and black, but this time I borrowed white. On the front is a still image shutter button, ...