GS Yuasa Batteries PYL12V160FT 4 Battery System with hardware, 48VDC, 160Ah

Proven in the real world, the PYL Series of telecom batteries provides security and long life in extremely hot climates where other VRLA batteries just don't survive. The PYL technology utilizes GS Battery's proprietary HT Element X Alloy[tm] and active material additives. The PYL Series is the most cost effective battery solution over the total life cycle and for initial installation in your network.