Here you will find a range of thermometer batteries, perfect for replacing batteries in digital thermometers. The LR41 battery is one of the most popular sizes used in thermometers, although you will also find other suitable sizes here. We can provide replacement thermometer batteries for brands like Vicks, Omron and Tesco. Please check your thermometer to ensure you are ordering the correct battery for your needs. Please check the instructions that came with your thermometer to help you change the battery safely.