---
product_id: 352388458
title: "MPPT 40A 12V/24V Auto Focus Tracking Solar Panel Charge Controller Regulator with Dual USB Port,LCD Display, Model:Wanderer BL912 (Blue)"
brand: "y&h"
price: "₨16142"
currency: LKR
in_stock: true
category: "Y&H"
url: https://www.desertcart.lk/products/352388458-mppt-40a-12v-24v-auto-focus-tracking-solar-panel-charge
store_origin: LK
region: Sri Lanka
---

# 40A max charging current Real-time LCD display for monitoring Supports 12V/24V lead-acid & lithium batteries MPPT 40A 12V/24V Auto Focus Tracking Solar Panel Charge Controller Regulator with Dual USB Port,LCD Display, Model:Wanderer BL912 (Blue)

**Brand:** y&h
**Price:** ₨16142
**Availability:** ✅ In Stock

## Summary

> 🔆 Charge smarter, live greener — never miss a watt!

## Quick Answers

- **What is this?** MPPT 40A 12V/24V Auto Focus Tracking Solar Panel Charge Controller Regulator with Dual USB Port,LCD Display, Model:Wanderer BL912 (Blue) by y&h
- **How much does it cost?** ₨16142 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/352388458-mppt-40a-12v-24v-auto-focus-tracking-solar-panel-charge)

## Best For

- y&h enthusiasts

## Why This Product

- Trusted y&h brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual USB Power Hub:** Charge your devices directly with dual USB ports—power on the go, no extra adapters needed.
- • **Smart Battery Protection:** Auto cut-off and restart safeguards your battery from overcharge, over-discharge, and reverse polarity.
- • **Maximize Solar Efficiency:** MPPT tech boosts charging efficiency by 10%-30%, squeezing every ray of sunlight.
- • **User-Friendly LCD Display:** Clear, real-time monitoring of voltage, current, and system status keeps you in control.
- • **Intelligent Temperature Compensation:** Automatically adjusts charging voltage based on ambient temperature for optimal battery health.

## Overview

The Wanderer BL912 MPPT 40A solar charge controller is a high-efficiency regulator designed for 12V and 24V lead-acid and lithium batteries. Featuring advanced MPPT technology, it increases solar charging efficiency by up to 30%, while its intelligent protections prevent battery damage. Equipped with dual USB ports and an LCD display, it offers versatile power management and real-time system monitoring, making it ideal for professional-grade solar setups.

## Description

Function: The controller can be used for lead-acid and lithium batteries. Always keep the battery on fill voltage condition. Reverse Polarity Protection for Battery Reverse Polarity Protection for Solar Panels When the battery voltage is low, the controller will automatically cut off the load from the system. If the voltage of battery is back to normal and the load will restart working. Thunder protection According to the battery voltage grade, the controller can automatically set charge-off voltage, the load-off voltage, the load- restore voltage. (The parameter is default under 25℃ condition, locked by the CPU procedure, cannot adjust.) The controller will automatically compensate the temperature of the charging voltage according to the changes of ambient temperature. Product Questions: Q: Can the inverter be connected to the load side of the controller? A: Please connect the inverter directly to the battery and not to the load terminal of the controller. Q: Does the controller have requirement for battery capacity? A: No, as long as the voltage corresponds to it (but the maximum current of the board and the battery capacity should correspond). For example, the current of the solar panel is 5A, the battery capacity is preferably 50 AH, the current of the solar panel is 10A, and the battery capacity is preferably 100 AH. Do not use a large board to charge a small battery, which may be dangerous. Q: How do you connect the solar panels, batteries, and controllers? A: Please be sure to connect the battery first (to ensure that the battery is fully charged), then connect the solar panel. When disassembling, please remove the solar panel first, then remove the battery, please connect it exactly as this order, otherwise the controller and other components probably damaged.

## Features

- The solar regulator is only suitable for lead-acid batteries: OPEN, AGM, GEL. It is also suitable for Ni-MH, Li-ion or other batteries.
- There are many kinds of MPPT technology,Our Solar Controller Mppt technology is to detect the maximum charging current,not the boost type or the automatic charging of the solar panel voltage. Compared with normal solar charge controller, this MPPT controller could increase efficiency by 10%-30%.
- When the battery voltage is low, the controller will automatically cut off the load from the system. If the voltage of battery is back to normal and the load will restart working.
- This MPPT controller has perfect SOC function, control charge current, and supply power to the loads.Prevent the battery from over-charging , over-discharging and reverse charging to solar panels during nights.
- Q:My solar panel is 36V 200W,can I charge 12V battery? A:To charge a 12V battery,the working voltage of the solar panel can be between 17V and 23V(Voc),and for a 24V battery,the working voltage of the solar panel can be between 36V and 46V.(Voc) Please make sure that the working voltage of the power supply and solar panels are within this range. If it is too high, the controller will be damaged.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B739BGQ |
| Best Sellers Rank | 6,603 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 6 in Solar & Wind Energy MPPT Controllers |
| Brand | Y&H |
| Colour | black|blue |
| Country Of Origin | China |
| Customer Reviews | 3.7 3.7 out of 5 stars (82) |
| Display Type | LCD |
| Item Weight | 0.29 Kilograms |
| Manufacturer | Y&H |
| Manufacturer Part Number | BL912-40A |
| Material | Plastic |
| UPC | 746608838422 |
| Voltage | 24 Volts |

## Product Details

- **Brand:** Y&H
- **Colour:** black|blue
- **Item weight:** 0.29 Kilograms
- **Material:** Plastic
- **Voltage:** 24 Volts

## Images

![MPPT 40A 12V/24V Auto Focus Tracking Solar Panel Charge Controller Regulator with Dual USB Port,LCD Display, Model:Wanderer BL912 (Blue) - Image 1](https://m.media-amazon.com/images/I/717gnc4SW8L.jpg)

## Available Options

This product comes in different **Style Name** options.

## Questions & Answers

**Q: do you have to connect this to a load? I plan on connecting my battery to a plug extension, so will just plug my stuff into there**
A: Only LEDs can be connected to the load port. No other DC equipment can be connected.

**Q: Is this an mppt or pwm controller? surely too cheap to be mppt.**
A: This an mppt controller. I've had mine for several months now and it works just fine.

**Q: What battery setting would i need for a lead acid battery, b1,b2 or b3?**
A: Sorry I'm not sure? I use a standard 65amp hour leisure battery and that works fine. Sorry I couldn't be of more help I'm kind of learning on the way.

## Frequently Bought Together

- Y&H MPPT 40A 12V/24V Auto Focus Tracking Solar Panel Charge Controller Regulator with Dual USB Port,LCD Display, Model:Wanderer BL912 (Blue)
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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-06-14*