Product Details If you are looking for an AVAYA Cordless Phone Batteries then you are in the right place. Our Replacement Cordless Phone Batteries have a Nickel Metal Hydride (NiMH) battery chemistry and are rated at 4.8 Volts 2150 mAh." These replacement Cordless Phone Batteries are in stock and ready to ship! This battery is an exact replacement battery for a AVAYA MDW-9031 Cordless Telephone. Product Specifications This battery works with AVAYA MDW-9031 view all |