--- product_id: 677629499 title: "12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine" brand: "sunapex" price: "€ 119.23" currency: EUR in_stock: true reviews_count: 8 category: "Sunapex" url: https://www.desertcart.pt/products/677629499-12v-20-watt-solar-trickle-charger-maintainer-with-mppt-controller store_origin: PT region: Portugal --- # 20W high-efficiency power IP67 waterproof durability 12V battery compatible 12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine **Brand:** sunapex **Price:** € 119.23 **Availability:** ✅ In Stock ## Summary > ☀️ Keep your power flowing, wherever life takes you! ## Quick Answers - **What is this?** 12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine by sunapex - **How much does it cost?** € 119.23 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/677629499-12v-20-watt-solar-trickle-charger-maintainer-with-mppt-controller) ## Best For - sunapex enthusiasts ## Why This Product - Trusted sunapex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart MPPT Charging:** Maximize battery life with advanced MPPT controller that prevents overcharging and optimizes power flow. - • **Weatherproof & Portable:** IP67-rated waterproof design with lightweight, flexible panel and carabiner hooks for effortless outdoor installation. - • **Fast & Efficient Solar Power:** Monocrystalline solar cells deliver faster, more reliable charging than traditional panels of the same size. - • **Hassle-Free Support & Warranty:** Enjoy peace of mind with a 1-year warranty plus lifetime technical support and 24/7 customer service. - • **Universal Battery Compatibility:** Seamlessly supports sealed lead-acid, lithium, LiFePO4, GEL, AGM, and flooded batteries for versatile use. ## Overview The SUNAPEX 12V 20W Solar Trickle Charger is a portable, waterproof solar panel kit featuring a high-efficiency monocrystalline panel and an advanced MPPT controller. Designed to maintain and charge a wide range of 12V batteries safely without overcharging, it’s perfect for vehicles, boats, RVs, and off-grid devices. Its IP67 rating ensures durability in all weather, while lightweight portability and easy installation make it a must-have for proactive power management. ## Description Product description Solar panel video Review: Great product and great price. - Works great! My husband uses this to charge his boat trolling motor and has had no trouble with it. Review: Pretty Nice - This wasn't seamless or simple for me to install in my Mother-In-Law's Nissan Juke. The cable wasn't quite long enough and it turn out the rear window is tinted so it seems the performance is reduced. These are not issues with the unit. I thought the packaging was excellent and the kit had everything you should need for installation. I found that the cabling is a little short for how I had routed the cable, and splicing the 16 ga wire with crimp connectors was...nightmarish for my fat fingers. Buy yourself and extension and save yourself some grief. The MPPT controller makes it easy to operate, no over charging and no back feed from the battery to the solar cell at night. I also purchased a battery connector kit that came with an inline blade fuse to protect the whole system from the unexpected. I wish there was an easier way to mount the solar panel inside the car. Hoping a valid solution will come to me soon. At the moment it is using up a fair about of cargo space in the hatch area. ## Features - Battery Savior: This is designed to charge and maintain 12V rechargeable batteries. Use it to charge and maintain infrequently used vehicles; boats; outdoor electronics; lawnmowers and more. Ensure your devices start anytime and protect batteries from long-term discharge. It’s also ideal for off-grid devices like electric fences; gate openers; water pumps; weather systems; cameras, etc. Compatible with most battery likes sealed lead-acid; lithium; LiFePO4; GEL; AGM; flooded, etc - No Overcharging, No Battery Drain: The controller prevents overcharging and stops charging when the battery is full, resuming when voltage drops. Ensures battery safety without draining power - Upgraded MPPT Controller: Outperforms PWM controllers with faster charging and higher currents. Features 4 battery status indicators and precise charging modes for LiFePO₄; GEL and AGM batteries - High-Efficiency Solar Panel: Monocrystalline cells charge faster than polycrystalline and amorphous panels of the same size - IP67 Waterproof: Fully sealed and IP67 waterproof, suitable for all weather conditions Easy Installation & Portable: Lightweight and flexible, with carabiners for hanging anywhere - Worry-Free Warranty & Support: SUNAPEX offers a one-year warranty and lifetime technical support. 24/7 customer service ensures prompt responses. Contact us anytime for assistance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DHCKCS68 | | Best Sellers Rank | #26,415 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #14 in Solar Battery Chargers & Charging Kits | | Brand | SUNAPEX | | Brand Name | SUNAPEX | | Connector Type | SAE | | Customer Reviews | 4.0 out of 5 stars 27 Reviews | | Efficiency | High Efficiency | | Manufacturer | SUNAPEX | | Manufacturer Part Number | SA_RX20W_MPPT | | Material | Monocrystalline Silicon , Polymer, Aluminum | | Material Type | Monocrystalline Silicon, Polymer, Aluminum | | Maximum Power | 20 Watts | | Maximum Voltage | 12 Volts (DC) | | Model Number | SA_RX20W_MPPT | | Special Feature | Flexible, Portable | | Special Features | Flexible, Portable | ## Product Details - **Brand:** SUNAPEX - **Material:** Monocrystalline Silicon, Polymer, Aluminum - **Efficiency:** High Efficiency - **Maximum Voltage:** 12 Volts (DC) - **Maximum Power:** 20 Watts ## Images ![12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine - Image 1](https://m.media-amazon.com/images/I/916+LRYS9UL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product and great price. *by S***M on May 1, 2026* Works great! My husband uses this to charge his boat trolling motor and has had no trouble with it. ### ⭐⭐⭐⭐⭐ Pretty Nice *by A***R on September 3, 2025* This wasn't seamless or simple for me to install in my Mother-In-Law's Nissan Juke. The cable wasn't quite long enough and it turn out the rear window is tinted so it seems the performance is reduced. These are not issues with the unit. I thought the packaging was excellent and the kit had everything you should need for installation. I found that the cabling is a little short for how I had routed the cable, and splicing the 16 ga wire with crimp connectors was...nightmarish for my fat fingers. Buy yourself and extension and save yourself some grief. The MPPT controller makes it easy to operate, no over charging and no back feed from the battery to the solar cell at night. I also purchased a battery connector kit that came with an inline blade fuse to protect the whole system from the unexpected. I wish there was an easier way to mount the solar panel inside the car. Hoping a valid solution will come to me soon. At the moment it is using up a fair about of cargo space in the hatch area. ### ⭐ Drains the battery rather than keeping it charged! *by J***T on November 17, 2025* I bought this for keeping a brand new very expensive 12 volt AGM battery charged up on my sailboat. It failed. The solar panel is probably fine, but the charger was very erratic. If there is nothing but sunny weather it seems to do ok, but if you get a few cloudy days it seems to drain the battery quickly, even though the only thing attached to the battery was this charger, there were no loads using battery power. After a couple days (with no load), the battery would read 12.2 volts. I hardly ever saw over 13 volts which is what it should have been if this charger was working correctly. ## Frequently Bought Together - SUNAPEX 20W Flexible Solar Panel with MPPT Charge Controller, Solar Battery Charger Maintainer, 12V Waterproof Solar Trickle Charger for Car, Motorcycle, Boat, Marine, RV, Trailer, Tractor,Truck, etc - OYMSAE 25Feet SAE to SAE Extension Cable Quick Disconnect Connector 16AWG,for Automotive,Solar Panel Panel SAE Plug(25FT(16AWG)), Charging Adapter --- ## 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.pt/products/677629499-12v-20-watt-solar-trickle-charger-maintainer-with-mppt-controller](https://www.desertcart.pt/products/677629499-12v-20-watt-solar-trickle-charger-maintainer-with-mppt-controller) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-24*