--- product_id: 292085921 title: "Spark 25A MPPT Dual Battery Solar Charge Controller 12V for RV Camper Caravan Boat Trailer fit for Sealed, Gel, Flooded, Lithium Battery optional remote display unit bluetooth dongle" brand: "gsl spark" price: "B/.331" currency: PAB in_stock: true reviews_count: 9 category: "Gsl Spark" url: https://www.desertcart.com.pa/products/292085921-spark-25a-mppt-dual-battery-solar-charge-controller-12v-rv store_origin: PA region: Panama --- # 99.5% MPPT efficiency Mobile app & remote monitoring Dual battery support Spark 25A MPPT Dual Battery Solar Charge Controller 12V for RV Camper Caravan Boat Trailer fit for Sealed, Gel, Flooded, Lithium Battery optional remote display unit bluetooth dongle **Brand:** gsl spark **Price:** B/.331 **Availability:** ✅ In Stock ## Summary > ⚡ Charge smarter, live freer — power your adventures with Spark! ## Quick Answers - **What is this?** Spark 25A MPPT Dual Battery Solar Charge Controller 12V for RV Camper Caravan Boat Trailer fit for Sealed, Gel, Flooded, Lithium Battery optional remote display unit bluetooth dongle by gsl spark - **How much does it cost?** B/.331 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/292085921-spark-25a-mppt-dual-battery-solar-charge-controller-12v-rv) ## 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 - • **Maximize Solar Power ⚡:** Harness up to 350W solar input with cutting-edge MPPT tech delivering over 99.5% tracking efficiency for peak energy capture. - • **Dual Battery Mastery 🔋:** Simultaneously charge your main and starter batteries with smart current limiting and overcharge protection for ultimate battery health. - • **Built to Last & Protect 🛡️:** Robust safety features including overload, overheating, reverse polarity, and back-discharge protection ensure reliable, worry-free off-grid power. - • **Real-Time Control & Insights 📱:** Stay connected with Bluetooth dongle or optional remote display, monitoring and adjusting your system anytime via mobile app. - • **Versatile Battery Compatibility 🔄:** Easily switch between sealed, gel, flooded lead-acid, and lithium battery types with simple dip switch settings tailored to your power needs. ## Overview The Spark 25A MPPT Dual Battery Solar Charge Controller is a high-efficiency 12V controller designed for RVs, campers, caravans, boats, and trailers. It supports up to 350W solar panels and dual battery charging with advanced MPPT technology achieving over 99.5% tracking efficiency. Compatible with sealed, gel, flooded lead-acid, and lithium batteries, it offers real-time monitoring via Bluetooth or remote display. Built-in safety features protect your batteries and system, making it a reliable choice for off-grid solar power management. ## Description Product Description SPARK DUAL MPPT solar charge controller 12v -Switchable characteristic lines of charging for optimum charging of Gel/dry-fit/AGM/fleece or acid/lead-acid,as well asLiFePO4 batteries. -Increased MPPT charging current compared with conventional controllers,due to ultramodern controller technology (microprocessor)by 10% to 30%(efficiency>95 %) -Unattended Charging: Standard protection against overload, overheating, reverse battery and back discharge of the battery(in case of insufficient solar power, such as at light, at night etc.). -MPPT controller Two Battery Charging Ports: Automatic charging of the main battery or board battery (Board I): Support charging and trickle charging (max.1 A) of the vehicle's starter battery (Start II) with overcharge protection -Overcharge protection: Reduction of the charging current of the battery in case of excessive solar power and full battery. Immediate recharging in case of power consumption to ensure always the best possible charging state of the battery. Review: Works with mobile app. - Used with the Adamo motorhome solar charger and provides realtime information regards what power is being pushed from your solar panel to your leasure battery. Review: There is a 20amp fuse inside - I have used This controller for 2years some how one day it stopped working. The solar panel indicator was flashing ( the controller is waiting for a solar panel to be connected) .I thought I'd investigate so I removed the top 2 screws on both the front and back this released the top, and to my surprise and delight the 20amp standard car fuse had blown. It was difficult to pull out to replace, I installed a new fuse and the controller instantly started working...yes. I would think the fuse is a safety feature as my battery sides are swollen and must have caused a power surge back to the controller. The controller has worked flawlessly from the first day it was fitted and is still working flawlessly today. I also have the blue tooth option and this works flawlessly too . I would definitely recommend this unit too anyone. Although if you can afford it go for the next model up for better 2nd battery charging. ## Features - Advanced MPPT (Maximum Power Point Tracking) technology, Spark solar charge controller uses MPPT technology, with a tracking efficiency of no less than 99.5%. - Dual Battery: Spark controller supports 2 batteries, Main and starter battery. - Monitor via mobile phone APP ChargerConnet, or external display unit connecting, realizing real-time data checking and parameters setting. (both optional) - Suitable for solar panels up to 350W 12V battery. Current limiting function (10A) allows possibility of adding more solar panels in the future. - Easy Dip Switch settings: Primary battery type can be set to sealed, gel, or flooded lead acid types, or LiFePO4 / Li-NiCoMn lithium ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08YXN3Z2R | | Best Sellers Rank | 6,895 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 8 in Solar & Wind Energy MPPT Controllers | | Brand | GSL SPARK | | Colour | Black And Silver | | Country Of Origin | China | | Customer Reviews | 4.5 out of 5 stars 28 Reviews | | Display Type | LCD | | Display type | LCD | | Included Components | Remote Display Unit, Mounting Screws, User Manual | | Item Dimensions L x W x H | 11L x 4W x 11H centimetres | | Item Weight | 0.15 Kilograms | | Item weight | 0.15 Kilograms | | Manufacturer | Spark | | Manufacturer Part Number | MPT02 | | Material | Abs Plastic , Lcd Glass | | Product dimensions | 11L x 4W x 11H centimetres | | Smart Home Compatibility | Not Smart Home Compatible | | Unit Count | 1.0 count | ## Product Details - **Brand:** GSL SPARK - **Display type:** LED - **Item weight:** 0.5 Kilograms - **Material:** Aluminium - **Voltage:** 12 Volts (DC) ## Images ![Spark 25A MPPT Dual Battery Solar Charge Controller 12V for RV Camper Caravan Boat Trailer fit for Sealed, Gel, Flooded, Lithium Battery optional remote display unit bluetooth dongle - Image 1](https://m.media-amazon.com/images/I/71UjMrdCYqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works with mobile app. *by M***L on 12 August 2025* Used with the Adamo motorhome solar charger and provides realtime information regards what power is being pushed from your solar panel to your leasure battery. ### ⭐⭐⭐⭐⭐ There is a 20amp fuse inside *by A***N on 5 June 2022* I have used This controller for 2years some how one day it stopped working. The solar panel indicator was flashing ( the controller is waiting for a solar panel to be connected) .I thought I'd investigate so I removed the top 2 screws on both the front and back this released the top, and to my surprise and delight the 20amp standard car fuse had blown. It was difficult to pull out to replace, I installed a new fuse and the controller instantly started working...yes. I would think the fuse is a safety feature as my battery sides are swollen and must have caused a power surge back to the controller. The controller has worked flawlessly from the first day it was fitted and is still working flawlessly today. I also have the blue tooth option and this works flawlessly too . I would definitely recommend this unit too anyone. Although if you can afford it go for the next model up for better 2nd battery charging. ### ⭐⭐⭐⭐ 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 ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.pa/products/292085921-spark-25a-mppt-dual-battery-solar-charge-controller-12v-rv](https://www.desertcart.com.pa/products/292085921-spark-25a-mppt-dual-battery-solar-charge-controller-12v-rv) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-11-13*