Coin Battery Tester — 3V & 1.55V Button Cell Checker

<p>Quickly check if your coin batteries still have power with this compact <strong>Coin Battery Tester</strong>. Works with both <strong>3V Lithium</strong> (CR2032, CR2025, CR2016, CR2430, CR1632, etc.) and <strong>1.55V Silver Oxide</strong> (LR44, LR41, LR1130, SR626, SR920, etc.) button cell batteries.</p><ul><li>✅ Supports 3V & 1.55V button cells</li><li>✅ Simple, fast reading — no complex setup</li><li>✅ Compact and portable design</li><li>✅ Ideal for technicians, watchmakers, and home users</li><li>✅ Helps avoid wasting good batteries</li></ul><p>Stop guessing whether your battery is dead. Test in seconds and save money.</p>