For Model-I, sealed maintenance free lead acid battery with a capacity of up to 12 AH, at voltages of up to 12V @ C/20 rate of discharge or NiMH or Lithium Ion battery of requisite capacity.
For Models – II, III , battery should have a minimum rating of 12V, 17 Ah or 12V, 40 Ah at C/20 rate of discharge depending on the Model.
The light source of white LED type.
The color temperature of W-LEDs used in the system in the range of 5500oK–6500oK.
The light output from the W-LED light source is constant throughout the duty cycle.
Total electronics efficiency > =90%.
Lighting quality – free from glare and flickering.
Auto resettable reverse polarity protection shall be provided.
The system have protection against battery overcharge, deep discharge condition.
Load reconnect is provided at 80% of the battery capacity status.
Adequate protection is provided against battery reverse polarity.
Fuses provided to protect against short circuit conditions.
Protection for reverse flow of current through the PV module(s) is provided.