Solar Charge Controller

SOLAR CHARGE CONTROLLER

Solar Charge Controllers are designed to extract the maximum amount of power available from the solar panels and deposit it in the battery. Solar PV charge controllers take the uncertain voltage from a solar panel and condition it to safely charge lead acid batteries. These solar PV charge controllers has energy harvesting, and a three-stage charging method, bulk, absorption, and float (maintenance) charge, but due to the nature of solar panels these are different in nature than a typical AC driven charger. They pulse charge the battery. During the pulse the solar panel is virtually short-circuited to extract the maximum power from the panel and also to allow the panel to work more efficiently. These solar charge controllers also protect your plates/systems from discharging through the batteries after the sun goes down. Solar charge controllers are necessary to protect your PV battery investment. 
Solar Charge Controllers have the capability of temperature compensation of the battery charging algorithm with a thermistor that can be put on the battery.
These Solar Charge Controllers also have system functions, for example dusk detection which can be used to turn on the load connected to the DC output at dusk, and turn off the load to prevent the batteries from being over-discharged. They have very low quiescent current draw, which means that when the solar panels are not producing enough power to charge and when the battery current is not called for, the system can sleep without draining the batteries.

• Microcontroller based pulsed charging system and three-stage solar charging algorithm.
• Bulk, Absorption and Float Charge LED indications.
• 5 State LED Indications of battery levels.
• Electronic Overcharge Protection and back current blocking to PV panel.
• Over temperature protection of PV Charge Controller's electronic circuit.
• Automatic dusk detect & On-Off operation at DC output.
• 25% 5 minute overload capability on charge.
• 60% 5 minute overload on discharge.
• Low voltage battery disconnect and reconnect at DC output.
• Temperature compensation option built in.
• Over-discharge protection at DC output