Dweekiy High-Efficiency MPPT 40A Solar Controller - LCD Display & 5V/2A Dual USB Ports Compatible with 12V-36V Panels (12V/24V Auto)

- Advanced MPPT Tracking Technology: Automatic focusing MPPT tracking charging with high charging efficiency and non-stop detection during charging with bidirectional focusing tracking capability for optimal power conversion - Comprehensive Protection Features: Build-in short-circuit, open-circuit, reverse, and over-load protection with three-stage management that effectively protects the battery. Package includes one controller and one user manual - Large LCD Display Screen: Solar panel controller features a big LCD display showing all adjustable parameters with two-way moss tube anti-backflow circuit, high-power charging mode, and ultra-low heating design - Durable Construction Quality: Built to meet standard specifications with strict factory quality control, featuring fine workmanship, wear-resistance properties, and extended service life for long-term reliability - Dual USB Output Ports: Equipped with convenient 5V/2A dual USB ports for charging mobile devices and other electronics while managing your solar power system efficiently - Wide Compatibility Range: Compatible with 12V/24V auto-detection battery systems and supports solar panels ranging from 12V to 36V including 18V, 24V, and 36V configurations - Adjustable Voltage Parameters: Features customizable voltage settings with default charge at 13.7V, discharge stop at 10.7V, and discharge reconnect at 12.6V, all adjustable to meet specific requirements

Product description

Specification

Q1: What type of battery does B2, B3 refer to?

A: B02: Lithium iron phosphate batteries, B03: Lithium batteries, B04: Marine starter batteries.

Q2: The product won't turn on?

A: Please operate according to the following tips:

1. Disconnect and rewire, connect the battery first, then connect the photovoltaic panel;

2. 12V battery connected to the 18V photovoltaic panel, 24V battery connected to the 36V photovoltaic panel;

3. The first time charging need to ensure that the battery is charged, the screen will light up.