The Tripp Lite's BP240V135 Pack of External Battery extends the runtime of compatible Tripp Lite SmartOnline UPS systems recommending its use, including SVT10KX, SVT20KX and SVT30KX. It comes with heavy-gauge cabling and a high-current DC connector for safe, simple hardwired installation, as well as internal disconnect for battery isolation. A built-in circuit breaker protects your equipment from dangerous overcurrent or overloads. For even more battery runtime, you can daisy-chain multiple BP240V135 battery packs to the compatible UPS system. Tested to IEC 62040-1: 2008/A1: 2013 standards.

Some of its features are as following,

Internal DC disconnect for battery isolation
Built-in circuit breaker
Extends Runtime of Select SmartOnline UPS Systems
Includes cable with high-current DC connector
Tested to IEC 62040-1: 2008/A1: 2013 standards
Can be daisy-chained with multiple battery packs for extended-run operation
Connects to Tripp Lite’s SVT10KX, SVT20KX, SVT30KX and other 3-phase UPS systems recommending its use