Telecom batteries for base stations are backup power systems using valve-regulated lead-acid (VRLA) or lithium-ion batteries. They ensure uninterrupted connectivity during grid failures by storing energy and discharging it when needed.
[pdf] Construction work will include the development of 10 MW of solar power along with an energy storage system with two-hour lithium-ion batteries with a capacity of approximately 13 MW / 26 MWh, as well as connection to LUCELEC’s 66 kV transmission grid.
[pdf] The project, which will be the island’s second industrial-scale solar initiative, includes 10 MW of solar power and an energy storage system with 13 MW capacity using two-hour lithium-ion batteries. Source: PV Magazine LATAM
[pdf] 
