Telecom BESS Growth Raises PACK Design Requirements
Telecom backup batteries are becoming a more visible energy-storage category. On October 5, 2026, Cygni Energy and Indus Towers announced an MoU to explore sourcing energy storage solutions for telecom infrastructure in India, including up to 1.5GWh of BESS manufacturing capacity. Days earlier, Replus Engitech and Indus Towers announced another MoU involving 1.5GWh of dedicated BESS production capacity over two years.
These announcements do not mean every tower site needs the same product. Telecom backup batteries are application-specific systems. A battery used for a tower site must handle grid interruptions, repeated charge and discharge, high ambient temperature, limited installation space, remote monitoring requirements, and long periods of standby operation. A reliable solution depends on cell choice, PACK structure, BMS logic, communication protocol, enclosure design, and thermal coordination.
For many telecom applications, the design conversation begins around familiar voltage platforms such as 48V or 51.2V lithium battery systems. But voltage alone is not enough. Buyers should confirm discharge power, autonomy target, charge-source behavior, parallel expansion, cabinet size, connector layout, communication compatibility, alarm handling, and protection logic. A PACK that works in a light storage cabinet may still need changes before it is suitable for a telecom tower environment.
Thermal design is also important. Outdoor or semi-outdoor telecom sites can expose batteries to heat, dust, humidity, and uneven load patterns. The battery supplier should understand how the enclosure, internal spacing, cell balancing, current path, and BMS limits work together. A telecom PACK should be evaluated as a subsystem, not only as a list of cells inside a box.
LYTH View:
The recent Indian telecom BESS announcements show that tower backup is shifting toward more structured battery supply and local manufacturing capacity. For LYTH, the most relevant angle is not full tower-site integration, but the battery subsystem: cell sourcing, rack/module configuration, BMS matching, thermal design, and manufacturable PACK structure.
What LYTH Can Do:
LYTH can support telecom backup battery and light storage projects through cell sourcing, 48V/51.2V battery PACK integration, BMS adaptation, battery module development, and application matching. Project-specific validation should confirm load profile, communication requirements, installation environment, certification needs, and shipping conditions.
Sources: Cygni Energy-Indus Towers report, Replus-Indus Towers report, Communications Today
