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Common sense and a regular maintenance program always help, but here are some things to remember:

1. Inspect installation regularly to ensure all components, mechanical fastenings, electrical connections, and power cable securements are in good working order an clean and free of corrosion
2. Clean Solar Modules with a damp cloth to maintain best performance
3. Regularly check and maintain battery electrolyte level as per battery manufacturer's instructions.
4. Keep the battery terminals and casing clean.
5. A broken or otherwise faulty Solar Module could be a safety hazard and should be replaced