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Replacement battery for the Avaya 3631 and SMT-W5110 phones. Fully replaces OEM part number 700431489 US, 700431497 EU/UK and SMT-W5110B. Li-ion, 3.7 Volt, 1150 mAh capacity rating, cells made in Japan. The 1150 mAh capacity rating is 15% higher than the OEM's battery.Product Details Device Brand Avaya Device Model 3631, SMT-W5110 OEM Part Number 700431489 US, 700431497 EU/UK, SMT-W5110B
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