Each UNI-SOLAR solar battery charger utilizes the proprietary Triple Junction silicon solar cells of United Solar. These cells are made in a roll-to-roll deposition process on a continuous roll of stainless steel sheet metal. The result is a unique, flexible, lightweight cell.

The vinyl and foam modules are exceptionally durable. They are encapsulated in UV stabilized polymers and bonded and stitched to a cushioned backing material. The polymer encapsulation includes EVA and fluoropolymer Tefzel, a DuPont film.

Bypass diodes are connecetd across each cell, allowing the modules (excluding the USF-5) to produce power even when partially shaded. Blocking diodes are included within each poted junction box. A blocking diode prevents battery discharge into the module under very low or no-light conditions.

Each panel has 8 feet of tinned wire with 2-pin SAE connector and is packaged with a 2-foot fused battery cable.

Module ratings of 5W to 32W