Solar Power Manager - Solar energy management system for 12V lead-acid batteries

Description

Solar energy management module dedicated to lead-acid batteries with a voltage of 12 V. It is able to charge with a maximum of 4 A using a standard 18 V solar panel. solar panels. Compared with common PWM solar controllers, it can improve the charging efficiency by 10% to 30%. Thanks to its small size and light weight, it is easy to incorporate into your designs. The module provides two high-power outputs 5 V 5 A (OUT1) and 12 V 8 A (OUT2) and two USB 5 V 2.5 A outputs (USB1/USB2). Except for USB1, all outputs can be turned on/off via controller I/O pins (3.3V/5V compatible). This feature helps you dynamically manage power and reduce power consumption. The board also has various protective functions, such as protection against reverse connection, overheating and short-circuit, which significantly improves the stability and safety of the system.

The board is equipped with a series of signaling LEDs to facilitate the control of the system operation. It can be used in projects such as an intelligent environmental monitoring system, solar powered robots, a small solar street lamp or a solar powered power bank. Full documentation and configuration examples are available on the product page.

Features

• Solar panel management system: CN3767
• Input voltage from the solar panel (SOLAR IN): 15 V to 25 V
• Battery input (BAT IN): lead acid battery
• Charging current: up to 4 A trickle charge, constant current, constant voltage, floating charging
• Four charging stages dedicated to a 12 V lead-acid battery
• Charging voltage: 14.8V
• Over-discharge protection voltage: 10.8V
• Over-discharge protection release voltage: 11.8V
• Average charging efficiency (18V SOLAR IN): 94%
• Maximum quiescent current: <4 mA
• Outputs: OUT1 5V 5A, OUT2 12V 8A, USB1 5V 2.5A, USB2 5V 2.5A
• USB1/USB2 supports three USB charging protocols:
  • Apple 2.4 A: DP = 2.7V (DM = 2.7V)
  • SAMSUNG 2.0 A: DP = 1.2V (DM = 1.2V)
  • BC1.2: DP = DM = 0V (short)
• OUT1/USB1/USB2 performance: 90% at 10% load, 93% at 50% load, 92% at 90% load
• OUT2 efficiency: 99% at 10% load, 98% at 50% load, 97% at 90% load
• Safety functions:
  • BAT IN: Overload protection, reverse polarity
  • 5V/USB OUT: Protection against short circuit, overheating
  • SOLAR IN: Reverse polarity protection
• Working temperature: -40 to 85 ℃
• Dimensions: 68 x 68 mm

Kit contains

• Solar Power Manager For 12V Lead-Acid Battery
• 3 x jumper
• 4 x M3 * 16 nylon spacer
• 4 x M3 * 10 screw
• Heatsink (Black) 14*14*7mm
• Heat Conductive Silicone Pad (Blue) 14*14*0.5mm
• Heat sink (black) 50*50*12.7mm
• Heat Conductive Silicone Pad (Blue) 50*50*1.5mm
• DC power socket adapter