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Silver Oxide (SR) and Alkaline batteries (LR) are commonly used in watches, clocks, timers, calculators, laser pointers, toys, and LED "blinkies". Batteries that meet the IEC 60086-3 standards for watch batteries carry a "W" suffix. The functional differences between silver oxide and alkaline are:

  1. Silver oxide batteries have a 50% - 100% greater capacity, meaning they last up to twice as long as alkaline batteries.
  2. Silver oxide has a relatively slow declining voltage during discharge compared to alkaline, which is preferable for light meters used in cameras and digital calipers. Silver oxide provides 1.55 volts, while alkaline provides 1.5 volts.
  3. Silver oxide batteries have superior leakage resistance, meaning they're more corrosion resistant.

Other names for this battery include AG12/SG12, LR43, L1142, 186/301/386, and 6135-99-547-0573 (NSN)(S). All have dimensions of 11.6 mm diameter and 4.2 mm height. The alkaline varieties have mAh from 110-150 and the silver oxide varieties have mAh of 170-200.

  • 10pk Exell EB-SR43 Silver Oxide 1.55V Watch Battery Replaces SR43W 386

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Sealed Lead Acid CR123 Cordless Phone AA & AAA Keyless Entry & Watch Lithium Camera CORP/GOVT

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