EEMB 4PACK LIR2430 Rechargeable Battery 3.7V Lithium-ion Button Batteries Coin Cell for Earphone Wearable device Watch

Basic info: 3.7V 60mAh rechargeable coin cell, 24.5mm × 3.0mm, approximate 4.2g. Long cycle life, stable voltage output.Please charge the battery with EEMB dedicated charger. Safety Warning: Do Not overlap or mix batteries. Keep out of reach of children. Do Not Swallow. Store at 40-60% charge, recharge every 3 months. Certified Quality: UL1642 (search "MH20555" on UL). 30+ years lithium battery expertise. Reliable power source for daily electronic devices. Compatible with solar flashlight, sensor, solar welding helmet, airtag, Fob key.Not for LED candles, LED lights, or other LED devices – check compatibility before purchase. Manufacturer Direct：Global technical support. We take pride in providing the highest levels of customer satisfaction and we have over 20 years experience in lithium battery business. If you have any questions or concerns regarding our products, please send us a message and we will get back to you promptly.