The K-305177 is a twin pack of high-quality, 3.6 Volts, 3.5 Amp replacement lithium battery for the Visonic MCS-740 Powermax wireless alarm sounder. They are leak resistant and have a longer discharge curve than most alkaline batteries.

The batteries are also compatible with the SR-720, SR-740 and SR-740 HEX models.

Please note that these batteries are all new in the box and have not been used, so have not been tested.

We do not accept any returns for batteries.

Thank you.