. "AG13 vs LR44: Which Battery is the Best Choice?" Both AG13 and LR44 batteries are commonly used, but they have some differences. The main difference between them is their chemistry. The AG13 uses silver oxide chemistry, while the LR44 uses alkaline chemistry. In terms of voltage, the AG13 has a higher voltage of 1.55 volts compared to the LR44's 1.5 volts. This slight difference in voltage may not matter for most devices, but it could be a deciding factor for some. Another difference is their lifespan. AG13 batteries last longer than LR44 batteries, especially during continuous use. However, LR44 batteries can provide higher bursts of power than AG13 batteries. In terms of price, the AG13 is usually more expensive than the LR44. This is because of the silver oxide chemistry used in AG13 batteries. In conclusion, both batteries are good choices, but determining the best one depends on the device, the required voltage, and how often the device is being used.