---
product_id: 292085921
title: "25A SPARK MPPT solar charge controller 12V Dual Duo"
brand: "gsl spark"
price: "796 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Gsl Spark"
url: https://www.desertcart.pl/products/292085921-25a-spark-mppt-solar-charge-controller-12v-dual-duo
store_origin: PL
region: Poland
---

# 350W max solar input power 25A max main battery charge Dual battery ports for versatile charging 25A SPARK MPPT solar charge controller 12V Dual Duo

**Brand:** gsl spark
**Price:** 796 zł
**Availability:** ✅ In Stock

## Summary

> 🔋 Charge smarter, live greener — power your future with SPARK!

## Quick Answers

- **What is this?** 25A SPARK MPPT solar charge controller 12V Dual Duo by gsl spark
- **How much does it cost?** 796 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/292085921-25a-spark-mppt-solar-charge-controller-12v-dual-duo)

## Best For

- gsl spark enthusiasts

## Why This Product

- Trusted gsl spark brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Sleek 14.7 x 8 x 4 cm form factor fits perfectly in any professional solar setup.
- • **Dual Battery Mastery:** Simultaneously charge your main and starter batteries for uninterrupted power flow.
- • **MPPT Efficiency Boost:** Harness up to 350W solar input with cutting-edge Maximum Power Point Tracking technology.
- • **Rugged Aluminum Alloy Shell:** Durable, lightweight design built to withstand the elements and keep your system running.
- • **Universal Battery Compatibility:** Seamlessly supports Lead Acid, AGM, GEL, and LiFePO4 batteries—flexibility for every setup.

## Overview

The 25A SPARK MPPT Solar Charge Controller 12V Dual Duo is a high-efficiency device designed for dual battery charging with a maximum 25A output for the main battery and 1A for the starter battery. Compatible with four major battery types, it supports up to 350W solar input power, housed in a durable aluminum alloy shell. Ideal for professionals seeking reliable, compact, and versatile solar power management.

## Description

25A SPARK MPPT solar charge controller 12V Dual Duo : desertcart.co.uk: Business, Industry & Science

Review: Bluetooth Dongle - The dongle works perfectly with my Truma SDC25 MPPT controller and the bluetooth range is exceptionally good as well. Highly recommended
Review: Bluetooth BT10 adaptor - Works with my truma controller, I sometimes have to unplug the get it to connect with the phone but overall works well

## Features

- Two Battery Charging Ports, One for main battery 2nd for starter battery
- Suitable for lead acid, AGM, GEL, LiFePO4 4 types of batteries
- All aluminum alloy shell
- Maximum solar input power :350W
- Maximum starter battery charge: 1A Max main battery charge 25A

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08YXN3Z2R |
| Batteries required | No |
| Best Sellers Rank | 47,636 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 45 in Solar & Wind Energy MPPT Controllers |
| Customer Reviews | 4.4 4.4 out of 5 stars (24) |
| Date First Available | 14 Mar. 2021 |
| Included components | Controller user manual |
| Manufacturer | SPARK |
| Manufacturer reference | SP5025 |
| Product Dimensions | 14.7 x 8 x 4 cm; 500 g |

## Product Details

- **Brand:** GSL SPARK
- **Display type:** LED
- **Item weight:** 0.5 Kilograms
- **Material:** Aluminium
- **Voltage:** 12 Volts (DC)

## Images

![25A SPARK MPPT solar charge controller 12V Dual Duo - Image 1](https://m.media-amazon.com/images/I/61bWPbKzXXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Bluetooth Dongle
*by A***R on 23 September 2025*

The dongle works perfectly with my Truma SDC25 MPPT controller and the bluetooth range is exceptionally good as well. Highly recommended

### ⭐⭐⭐⭐ Bluetooth BT10 adaptor
*by G***K on 24 January 2024*

Works with my truma controller, I sometimes have to unplug the get it to connect with the phone but overall works well

### ⭐⭐⭐⭐⭐ Perfect
*by A***H on 13 October 2025*

Worked perfectly well with my MPPT

## Frequently Bought Together

- 25A SPARK MPPT solar charge controller 12V Dual Duo
- Red & Black Battery/Starter/Welding Flexible PVC Cable Wire 110/170/345 Amp 16mm 25mm 35mm by MKGT® (25mm² Red, 2 Meters)
- Victron Energy SmartShunt Battery Monitor (Bluetooth) - Victron Smart Shunt - 6.5V-70V - 500 amp

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**Shop now:** [https://www.desertcart.pl/products/292085921-25a-spark-mppt-solar-charge-controller-12v-dual-duo](https://www.desertcart.pl/products/292085921-25a-spark-mppt-solar-charge-controller-12v-dual-duo)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-19*