1. What is Silver Oxide SR44 Battery?

The SR44 is a silver-oxide button cell battery that provides stable voltage output throughout its lifespan. It's the standard power source for most dummy calculators due to its long shelf life and consistent performance.

2. Technical Specifications

Key specifications of SR44 battery:

3. Usage in Calculators

Details: SR44 batteries are preferred in calculators because they maintain nearly constant voltage until depletion, ensuring accurate calculations throughout battery life.

4. Replacement Guide

Tips: Replace calculator battery when display dims or calculations become erratic. Always replace with same type (SR44) and observe correct polarity.

5. Frequently Asked Questions (FAQ)

Q1: Can I use LR44 instead of SR44?
A: While LR44 (alkaline) fits physically, it has lower capacity and voltage drops over time, which may affect calculator performance.

Q2: How long does SR44 last in a calculator?
A: Typically 2-5 years depending on usage frequency and environmental conditions.

Q3: Are SR44 batteries rechargeable?
A: No, SR44 are primary (non-rechargeable) cells. Use only in devices designed for primary batteries.

Q4: How should I store spare SR44 batteries?
A: Store in original packaging at room temperature, away from metal objects that could cause short-circuiting.

Q5: Are there mercury-free alternatives?
A: Modern SR44 batteries are mercury-free, meeting international environmental standards.