Polar Power designs, manufactures, and sells DC power generators and hybrid power systems, primarily for the U.S. telecommunications market. The company's core products provide backup power to grid-connected cell towers and prime power for off-grid or remote towers. Polar Power's products output DC power directly, which eliminates the conversion losses inherent in conventional AC generators, and results in a smaller, lighter footprint — a key advantage for space- and weight-constrained urban rooftop installations. Products range from 5 kW to 50 kW and support diesel, natural gas, and LPG fuels. Product lines include base DC systems, hybrid systems integrating battery storage, solar hybrid systems, and mobile units. Telecom accounts for roughly 88% of revenue, with the majority tied to U.S. Tier-1 carriers deploying 5G networks. Military and marine applications make up the remainder. Polar Power sells directly to Tier-1 carriers in the U.S. and through regional offices internationally, though international revenue has declined to roughly 7% of sales. Revenue is lumpy and customer-concentrated, as large purchase orders from a handful of Tier-1 operators follow a certification process that can take up to three years. Polar Power manufactures in-house in Gardena, California, with a vertically integrated model covering proprietary alternators, control electronics, battery management, and enclosures. The company is pursuing diversification into military, EV charging, and off-grid mini-grid markets, though financial distress — including going concern doubt and a forbearance agreement with its lender — is constraining execution on these initiatives.