The Resideo 300-10728 is the backup battery for the Honeywell Home PROWLTOUCH and Resideo PROWLTOUCHC Keypads. It is rated at 3.85VDC and connects to the proper port on the PROWLTOUCH or PROWLTOUCHC. This is a rechargeable lithium-ion polymer battery.

The PROWLTOUCH and PROWLTOUCHC Keypads rely on the Resideo 300-10728 Battery to remain running when primary AC power is unavailable. The Resideo 300-10728 is model number P-504478. Its rated voltage is 3.85VDC. Its limited charge voltage is 4.4VDC. Its rated capacity is 2830mAh/10.89Wh. Its typical capacity is 2880mAh/11.08Wh. It is made in China. Do not take apart, puncture, heat, burn, or destroy the battery. Do not submerge in water. Dispose of safely.