CELLONIC, battery compatible with Ascom D81 compatible with Avaya DECT 3749, DECT 3740 (1100mAh, 3.7V) Replacement battery 1220187,660273/1B

• Perfect Fit & Wide Compatibility – Replacement battery designed for seamless compatible with Ascom D81 compatible with Avaya DECT 3749, DECT 3740 compatible with Aastra DT413. Check the full list of compatibility in our product description
• Premium Performance & Long Battery Life – High-quality Lithium Ion cells provide stable, long-lasting power. Ideal as a replacement or backup battery, minimizing charging breaks and ensuring extended call time
• High-Capacity – 1100mAhrechargeable battery delivering efficient and durable power. Rigorously tested to ensure excellent performance, extended lifespan, and consistent reliability
• Engineered for Reliability – Tested under strict German standards for durability and efficiency. A cost-effective alternative to original batteries, delivering strong performance without the premium price
• Smart & Cost-Effective Choice – Replacing the battery extends your device’s lifespan and reduces downtime. A reliable alternative to avoid full replacement costs while ensuring continued performance

Is your Aastra phone battery flat? Never miss a call with this compatible replacement DT413, DT423 rechargeable battery for BT cordless phones, landline, DECT and IP phones from CELLONIC. This CELLONICLithium Ion high-performance, rechargeable business and house phone battery is the perfect DT413, DT423 phone battery replacement, giving you long-term, reliable use – especially for those important calls. Specifically designed for use as a 1220187,660273/1B replacement cordless phone battery / landline phone battery, with 100% compatibility for DT413, DT423 telephones and more. ✔ Long battery life: replacement for Aastra 1220187,660273/1B batteries , 1100mAh capacity ✔ High-quality, tested replacement for Aastra battery cells – reliable power for up to 1000 charging cycles 1220187,660273/1B battery replacement for Aastra DT413, DT423 Sat Navs Brand: CELLONIC GPS Replacement Battery Capacity: 1100mAh Voltage: 3.6V - 3.7V Cell Technology: Lithium Ion Dimensions: 73,6 x 43,5 x 11mm Alternative for / Replaces: Original 1220187,660273/1B battery ★ 3-Year Manufacturer Guarantee ★ CELLONIC replacement batteries for cordless phones stand for certified safety and high standards. That's why they come with a 36-month guarantee.