LR44 Battery Equivalents Explained
What is the difference between SR44 and LR44 batteries?
The LR44 battery is ideally meant for use in small, portable or wearable devices, such as watches, laser pointers, and electronic car keys. This single-use cell is available in two chemistry compositions: alkaline and silver oxide. The alkaline LR44 battery is typically more affordable; however, the 1.5 voltage tends to decrease more over time and therefore typically offers a shorter lifespan. Alkaline batteries offer a more sloping discharge profile - as they are used over time, they become less powerful and your electronic device may not work as well as the first day of a new battery. If you are looking to power low-drain items, such as a blinking light, the alkaline chemistry may be all that you need. Another advantage alkaline LR44 battery cells have is that they are more commonly found in brick-and-mortar stores. Here is a list of alkaline LR44 battery equivalents:
The silver oxide LR44 battery, on the other hand, may cost more yet offers a more stable voltage, at 1.55V, and therefore a longer lifespan. Silver oxide batteries offer a flatter discharge profile that provides more even performance throughout the lifespan of the cell. Other common names for silver oxide batteries are as follows:
Based on this simple comparison, you will see that the SR44 and the LR44 batteries are quite similar - in fact, they are the same size at 11.6mm in diameter and 5.4mm long; however, they are not direct replacements for each other. Replacing an LR44 battery with an SR44, or vice versa, won't damage your electronic device. Unfortunately, the alkaline cell won't perform as well as the silver oxide, in some electronic devices. In fact, run times could drastically decline from days to hours if you switch a silver oxide-powered device to an alkaline. If you are looking for an affordable, single-use power source that is compatible with your particular device, these LR44 battery choices are the perfect solution. Please refer to your manufacturers' manuals to determine if the alkaline chemistry will work for your needs.