This rechargeable Li-Polymer backup battery restores standby power to a 2GIG security system when the original pack no longer holds charge. With a 3.7 V, 3700 mAh capacity, it is designed to charge efficiently in the panel and provide uninterrupted operation during temporary AC power failures and outages. Use it during routine maintenance, after repeated low-battery alerts, or when replacing an aged battery to keep monitoring and notifications active. Compatible with 2GIG GC3 GC3e Panel / SP1-GC3 / 10-000014-001 / 823990 / 2GIG-BATTERY-GC3 / GG-BATERYGC3 / 2GIG-GC3-345 Security System. 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.