Calculate & estimate
Turn your energizer’s continuous power draw into practical battery, panel and controller sizes for Malaysian weather.
Use average continuous consumption—not energizer output joules.
The selected chemistry drives the main battery recommendation.
Default 12V
Malaysia: 3.5h
Heat, wiring and controller losses
Malaysia standard: 3 days
Continuous 6W · 0.5A at 12V · 3.5 peak sun hours · 75% system efficiency
3 days autonomy
Formula result 72Ah · rounded upward to a practical size
Three rainy-day reserves plus 25% more panel capacity for recovery after cloudy weather.
Raw solar minimum: 54.9W · recovery multiplier ×1.25
2 days autonomy
Formula result 48Ah · rounded upward to a practical size
Covers normal daily use with two days of battery autonomy. Best for a clear, unshaded site.
Raw solar minimum: 54.9W · recovery multiplier ×1
5 days autonomy
Formula result 120Ah · rounded upward to a practical size
Five days of reserve and double the daily-balance panel target for difficult or remote sites.
Raw solar minimum: 54.9W · recovery multiplier ×2
Optional ownership estimate using the AGM selection above.
Enter the solar system cost to compare ownership against mains electricity.
