HQRP - D Size 3.6 V Lithium Thionyl Chloride Battery 14.5 Ah for DSC WT4911 WT4911B ER34615M-T1

Keep compatible security devices powered with a D size 3.6 V lithium thionyl chloride (Li-SOCl2) battery built for long runtime and dependable performance in security sirens and sensors. The 14.5 Ah capacity helps reduce battery change frequency in residential or commercial alarm setups, supporting stable operation during standby and alarm events. Compatible with DSC ER34615M-T1 / WT4911 / WT4911B / WT8911 / ALEXOR Wireless Outdoor Siren / WT4911BATT / ADT. When the security panel indicates a low battery, replace the cell and, after removing the old battery, wait at least 30 seconds before inserting the replacement. Note that WT4911 units may require depassivation before first use due to a passivation feature designed to preserve battery shelf life when not in use. Disclaimer: This is not an Original Equipment Manufacturer (OEM) product, HQRP branded product is a replacement. All brand names and logos are registered trademarks of their respective owners. Any use of the brand names or model designations for this product are made solely for purposes of demonstrating compatibility.