SR44SW and LR44 batteries are similar in size and shape, but there are some important differences. SR44SW is a silver oxide battery, while LR44 is an alkaline battery. Both fit in many of the same devices, like watches and small electronics. However, silver oxide batteries usually provide a steadier voltage and may last longer in certain devices. Before swapping them, check your device's manual to see which type is recommended for best performance.

357, 303, and SR44 are all button cell batteries with similar sizes, but they have different chemistry and voltage characteristics.

• 357 and SR44 are often used interchangeably and are typically silver oxide batteries.
• 303 is also a silver oxide battery, but sometimes has a slightly different discharge profile.

If you need to replace an SR44SW battery, you have a few options. Common equivalents include 357, 303, SR44, and LR44. While these batteries are similar in size, their chemistry can differ—silver oxide (SR44SW, 357, 303) versus alkaline (LR44). Silver oxide batteries generally last longer and maintain voltage better. For best results, match the chemistry and voltage your device recommends, and always double-check compatibility before installing a new battery.

SR44 and 303 batteries are very similar and are often used in the same devices. Both are silver oxide button cell batteries with nearly identical dimensions and voltage. However, there may be minor differences in discharge rates or labeling depending on the manufacturer. If your device calls for either, they’re typically interchangeable, but it’s always a good idea to confirm with your device’s instructions for optimal performance.

To make sure a button cell battery fits your device, start by checking the battery compartment or your device’s manual for the required battery code (like SR44SW, LR44, or 357).

• Look for the size and voltage specifications.
• Compare these details with the battery packaging before purchasing.
• If in doubt, bring your old battery to the store for comparison.