OptiMate Solar 80W Duo Panel OptiMate Solar - the worlds most efficient Solar Pulse Charger, Tester & Maintainer. Charger by day, monitor by night. The OptiMate Solar range features a smart charger-monitor which provides battery status information when charging and when the battery is at rest overnight. The OptiMate Solar TM-523 7 Amp smart charger-controller has a 4-LED panel for comprehensive information on charge progress and battery status. OptiMate Solar charge kits are fully automatic. Mount the panel in a suitable location to receive maximum sunlight, hook up the charger-monitor to the battery and walk away. No more battery problems. When the panel receives sun, the SOLAR CHARGE LED blinks confirming solar power is being delivered and one of the three battery status LEDs (SAVE, CHARGE, MAINTAIN) indicates charge progress.