AG13 and LR44 refer to the same 1.5V button cell size commonly used in small electronics. They’re typically alkaline and are cross-referenced under other codes you might see on product pages or manuals.

• Also labeled as: A76, L1154, G13, 1166A, V13GA, GP76A, and similar.
• Used in: watches, calculators, key fobs, small toys, and LED gadgets.

Choosing confidently can be easier with a few checks:

1. Match the code printed on your old battery or the device.
2. Confirm the chemistry (alkaline LR44/AG13 vs. silver oxide SR44) your device suggests.
3. Consider a multi-pack for spares and store them in a cool, dry place.

AG13/LR44 and 357 are the same physical button cell size, but they usually differ in chemistry. AG13/LR44 are generally alkaline (1.5V nominal), while 357 is commonly a silver oxide type (around 1.55V) that can provide a steadier output.

• Size fit: They fit the same compartment in many devices.
• Chemistry: Alkaline (LR44/AG13) vs. silver oxide (357/303/SR44).
• Use case: Silver oxide can be preferred for devices needing stable readings; alkaline is often fine for everyday gadgets.

Check your device markings. If it lists SR44/357/303, silver oxide may be recommended; if it lists LR44/AG13/A76, alkaline is typically suitable.

There isn’t a practical size difference—357 (silver oxide) and LR44 (alkaline) share the same button cell form factor and are designed to fit the same battery compartments. What varies is the chemistry and discharge behavior, not the dimensions.

• Shared cross-references: SR44, 303/357, A76, AG13, L1154, and similar codes.
• Fit check: Match the code printed on your old battery and the device tray.

Before installing, confirm polarity (+/−) markings in your device and avoid mixing different chemistries in the same device. When in doubt, review the product description and your device manual for the specified battery code.

LR44 is a widely used 1.5V button cell, and several cross-reference codes indicate compatible replacements. You’ll see these codes across packaging and product pages.

• Common equivalents (alkaline): AG13, A76, L1154, G13, GP76A, 1166A, V13GA.
• Silver oxide alternatives: SR44, 357, 303 (often offering steadier output).

To choose confidently:

1. Match the exact code printed on your old battery or device compartment.
2. Select the chemistry your device recommends (alkaline vs. silver oxide).
3. Review product specs for voltage and intended use. Pack sizes vary, so consider extras for future swaps.

Both are the same button cell size, but they perform differently. LR44 is alkaline with a 1.5V nominal output and is a practical pick for many everyday gadgets. SR44 (often labeled 357/303) is silver oxide, typically around 1.55V, and can deliver a more stable voltage over its life.

• Alkaline (LR44/AG13/A76): Budget-friendly and suitable for general use.
• Silver oxide (SR44/357/303): Often preferred for devices that benefit from steadier readings.

Check your device’s recommended code. You can filter by chemistry and pack size on product pages, and choose pickup or delivery at checkout where available.