Optimate Solar Duo Standard Kit 40 Watt 12V

The OptiMate Solar DUO Standard Kit, manufacturer part number TM522-D4, is a 40 W solar-powered charger and battery maintainer for 12 V battery systems. It combines a weatherproof polycrystalline solar panel with a separate OptiMate DUO charge-monitor controller, allowing the controller to be positioned close to the battery for convenient status monitoring.

The automatic multi-step charging programme is designed to charge and maintain 12 V lead-acid batteries, including standard, AGM and gel types, as well as 12.8 V lithium LFP batteries. The controller monitors battery condition and automatically switches to charging when sufficient solar energy is available.

• Manufacturer part number: TM522-D4
• Solar panel output: 40 W maximum
• Nominal battery voltage: 12 V / 12.8 V
• Supported battery capacity: 2–240 Ah
• Maximum average charging current: 3.33 A
• Low-voltage recovery capability from 4 V, as specified by the manufacturer
• Panel dimensions including corner mounting brackets: approximately 42 × 68.6 × 3.3 cm
• Solar-panel output cable length: 2 m with SAE connector

Suitable where a solar-powered battery-care solution is required for stored or intermittently used 12 V equipment. The solar panel should be installed and angled to receive direct sunlight.