DFRobot Solar Power Manager for 12V Lead Batteries

The DFRobot Solar Power Manager charges a 12 V lead-acid battery with up to 4 A from an 18 V solar panel and supplies devices up to around 100 W. According to DFRobot, the MPPT control gets 10 to 30 % more charging power than a PWM controller, even in weak light. Outputs: 5 V 5 A, 12 V 8 A and two USB ports with 5 V 2.5 A. The 12 V lead-acid battery is not included.

Recommended Accessories:

• 18V 0.61A Monocrystalline Solar Panel 10W
• 18V 0.6A Semi-flexible polycrystalline solar panel 10W with USB port

Features:

• Only for 12 V lead-acid batteries, printed BAT IN 12V Lead-Acid
• Constant voltage MPPT for standard 18 V solar panels
• Charging in four stages: trickle charge, constant current, constant voltage, float charge
• OUT1, USB1 and USB2 share 5 A (peak 8 A), together at most 25 W (peak 40 W)
• All outputs except USB1 can be switched on and off via an I/O pin (3.3 V and 5 V compatible)
• Battery protection: overcharge, over-discharge, reverse polarity; solar input protection: reverse current, reverse polarity
• Output protection: short circuit, overload, overtemperature
• Heat sinks and thermal pads are included, mounting according to the DFRobot wiki

Application Examples:

• 12 V lighting with solar power
• Surveillance cameras and measuring stations outdoors
• Pumps and small robots
• IoT devices without mains connection

Documentation:

• DFRobot Wiki Solar Power Manager 12V (DFR0580)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0580
• Charge controller: CN3767
• Solar input (SOLAR IN): 15 to 25 V, 18 V nominal
• Battery (BAT IN): 12 V lead-acid battery
• Charging current: at most 4 A
• Constant voltage: 14.8 V
• Float voltage: 13.55 V
• Over-discharge protection: 10.8 V, release at 11.8 V
• Solar charging efficiency: 94 % on average (18 V)
• Outputs: OUT1 5 V 5 A, OUT2 12 V 8 A, USB1 5 V 2.5 A, USB2 5 V 2.5 A
• USB charging protocols: Apple 2.4 A, Samsung 2.0 A, BC1.2
• Efficiency OUT1/USB: 93 % at 50 % load
• Efficiency OUT2: 98 % at 50 % load
• Own consumption: below 4 mA
• Operating temperature: -40 to 85 °C
• Dimensions: 68 × 68 mm
• Weight: 112 g

Scope of Delivery:

• 1× DFRobot Solar Power Manager for 12 V lead-acid batteries
• 3× Jumper black
• 4× Nylon spacer M3 × 16
• 4× Stainless steel screw M3 × 10
• 1× Heat sink aluminium black 14 × 14 × 7 mm
• 1× Thermal pad blue 14 × 14 × 0.5 mm
• 1× Heat sink aluminium black 50 × 50 × 12 mm
• 1× Thermal pad blue 50 × 50 × 1.5 mm
• 1× DC jack