--- product_id: 136163039 title: "Topsolar Solar Panel Kit 20W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System" brand: "topsolar" price: "€ 113.16" currency: EUR in_stock: true reviews_count: 10 category: "Topsolar" url: https://www.desertcart.it/products/136163039-topsolar-solar-panel-kit-20w-12v-monocrystalline-with-10a-solar store_origin: IT region: Italy --- # 12V system compatibility 10A smart charge controller 20W high-efficiency monocrystalline panel Topsolar Solar Panel Kit 20W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System **Brand:** topsolar **Price:** € 113.16 **Availability:** ✅ In Stock ## Summary > ☀️ Power your freedom with smart solar energy—never get stranded in the dark again! ## Quick Answers - **What is this?** Topsolar Solar Panel Kit 20W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System by topsolar - **How much does it cost?** € 113.16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/136163039-topsolar-solar-panel-kit-20w-12v-monocrystalline-with-10a-solar) ## Best For - topsolar enthusiasts ## Why This Product - Trusted topsolar brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Plug-and-Play Kit:** Includes extension cables with alligator clips and O-ring terminals for seamless battery connection and maintenance. - • **Compact & Lightweight Design:** Easily portable and quick to install with pre-drilled mounting holes—perfect for RVs, boats, and remote setups. - • **Durable Build for Harsh Environments:** Tempered glass and aluminum frame ensure long-lasting performance in marine, camping, and off-grid conditions. - • **Reliable 10A Solar Charge Controller:** Protects your battery with overcharge, short circuit, and reverse polarity safeguards for worry-free off-grid power. - • **High-Efficiency Monocrystalline Panel:** Maximize solar energy capture with premium 20W panel delivering up to 2.6A under direct sunlight. ## Overview The Topsolar 20W 12V Monocrystalline Solar Panel Kit combines a high-efficiency solar panel with a 10A charge controller and extension cables, designed to maintain and charge 12V batteries in off-grid applications like RVs, boats, and remote cabins. Its compact, durable design and built-in battery protections make it an essential, hassle-free power solution for professionals seeking reliable, portable energy independence. ## Description Buy Topsolar Solar Panel Kit 20W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System: Solar Panels - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Brought back to life a nearly-dead battery - I purchased 2 of these to maintain two car batteries (20 Watt + 10 Amp solar controller). PROS: I measured up to 37 Watts (2.6 Amps x 14.4 Volts) under direct sunlight from one of these small panels. The solar controller works nicely with these panels and can safely handle up to a 100 Watt panel. The wire length from the panel (~18 inches) and to the battery (~24 inches) is a good compromise. As stated in the review title, one of my batteries was at 11.7V and one of these panels was able to bring the battery back to a steady 12.5V over a 2-day period (to be fair, the battery is already 7 yrs old and is nearing the end of its life). CONS: (a) The cable screws in the solar controller are small and one has to be careful not to over-torque, and at the same time being careful in that the cables actual catch and hold tight. (b) The solar controller is supposed to be user-settable for the max voltage (I set mine to 13.8V) however, they keep charging up to 14.4 and settle at that voltage. Not a big deal for standard car batteries but could be problematic if someone is using a more exotic type of battery. OVERALL IMPRESSION: while a bit pricey for what you get (~$50 each), I'm quite pleased with the Kit and do recommend it as a way to maintain your batteries. Review: works great on truck battery - my vehicle sits for long periods of time - I don't go to the office hardly ever and when I do drive to the grocery store, its the 35miles per gallon commuter that I take instead of the 14 mpg weekend warrior truck. Unfortunately, this means that my battery dies after about 30 days due to accessories drawing power like remote starter, antitheft system, etc. I ordered a 10W solar charger that did NOT do the job and the battery still died while connected to it in sunny arizona. I returned that charger and ordered this one. Well, once again my battery didn't have enough power to start the engine, and instead of jumping to start it, I attached this solar charger and let it sit. After 24 hours the batter once again had enough power to start the engine. Im happy with the power this produces and if left attached, it keeps my batter charged enough for starting - although my neighbors hate me because now I move my car out of the community / guest parking even less since I don't need to start it as often to re-charge the battery via the alternator :-D ## Features - Perfect for off grid 12 volt batteries charging system and a variety of DC applications, designed for maintaining 12 volt batteries in car, RVs, cabins, boats, marine, battery operated gates, back-up power and remote power use. - Solar panel kits, package included 20 watts solar panel, 12V/24V solar charger regulator controller and two 6.5ft cable with alligator clips and O-ring terminal for battery charging connection, easy to fix and install. - With the 10A solar charger controller, it can prevent the battery from over charge, over voltage, discharge and short circuit, reversed polarity protection, battery is fully protected. - Small in size and light to take, it is easy to carry for camping or other outdoor activities. Easy to install with pre-drilled holes on the back of panels for fast mounting and securing. - Built with strong tempered glass and aluminum frame.12 months worry-free warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RZBVTGR | | Amperage Capacity | 10 Amps | | Best Sellers Rank | #36,974 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #145 in Solar Panels | | Brand Name | Topsolar | | Connector Type | USB | | Customer Reviews | 4.2 4.2 out of 5 stars (3,663) | | Efficiency | High efficiency | | Included Components | NO | | Item Dimensions L x W x H | 31.5"L x 15.75"W x 0.98"H | | Manufacturer | Topsolar | | Manufacturer Part Number | T02P20C10BW0.83-1 | | Material Type | Monocrystalline Silicon | | Maximum Power | 20 Watts | | Maximum Voltage | 12 Volts | | Model Number | TOPSPM | | Output Voltage | 5 Volts | | Special Features | Short Circuit Protection | | UPC | 736256963690 764686116546 786515614139 735661123187 752502123205 752509632052 752585963699 746548912510 756464631891 754147981646 785896032259 732696987562 746581614648 746541982411 605646777158 721526987452 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Topsolar - **Efficiency:** High efficiency - **Included Components:** NO - **Material:** Monocrystalline Silicon - **Product Dimensions:** 31.5"L x 15.75"W x 0.98"H ## Images ![Topsolar Solar Panel Kit 20W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System - Image 1](https://m.media-amazon.com/images/I/71-hHjE87nL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this monocrystalline or amorphous?** A: High efficiency monocrystalline solar cells **Q: 1. can i connect 2 solar panels in parallel to get 40w (higher currency to 12v battery)? 2. can i use the same 10a controler?** A: Yes you can just don’t go over the rated amps on your controller **Q: How long does it take to charge a deep cycle battery?** A: 24 hrs and hold at13.3 **Q: does it come in black?** A: It is black. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Brought back to life a nearly-dead battery *by A***9 on May 31, 2020* I purchased 2 of these to maintain two car batteries (20 Watt + 10 Amp solar controller). PROS: I measured up to 37 Watts (2.6 Amps x 14.4 Volts) under direct sunlight from one of these small panels. The solar controller works nicely with these panels and can safely handle up to a 100 Watt panel. The wire length from the panel (~18 inches) and to the battery (~24 inches) is a good compromise. As stated in the review title, one of my batteries was at 11.7V and one of these panels was able to bring the battery back to a steady 12.5V over a 2-day period (to be fair, the battery is already 7 yrs old and is nearing the end of its life). CONS: (a) The cable screws in the solar controller are small and one has to be careful not to over-torque, and at the same time being careful in that the cables actual catch and hold tight. (b) The solar controller is supposed to be user-settable for the max voltage (I set mine to 13.8V) however, they keep charging up to 14.4 and settle at that voltage. Not a big deal for standard car batteries but could be problematic if someone is using a more exotic type of battery. OVERALL IMPRESSION: while a bit pricey for what you get (~$50 each), I'm quite pleased with the Kit and do recommend it as a way to maintain your batteries. ### ⭐⭐⭐⭐⭐ works great on truck battery *by A***N on January 4, 2024* my vehicle sits for long periods of time - I don't go to the office hardly ever and when I do drive to the grocery store, its the 35miles per gallon commuter that I take instead of the 14 mpg weekend warrior truck. Unfortunately, this means that my battery dies after about 30 days due to accessories drawing power like remote starter, antitheft system, etc. I ordered a 10W solar charger that did NOT do the job and the battery still died while connected to it in sunny arizona. I returned that charger and ordered this one. Well, once again my battery didn't have enough power to start the engine, and instead of jumping to start it, I attached this solar charger and let it sit. After 24 hours the batter once again had enough power to start the engine. Im happy with the power this produces and if left attached, it keeps my batter charged enough for starting - although my neighbors hate me because now I move my car out of the community / guest parking even less since I don't need to start it as often to re-charge the battery via the alternator :-D ### ⭐⭐⭐⭐ It certainly charges but... *by D***. on August 22, 2024* This setup is perfect for the beginners out there and I've really loved this kit for the price. It's super easy to connect everything! I even had this in my car for a little while mainly to start out with because I didn't have a suitable battery. I did finally buy a used lead acid battery that I am using but only temporarily. The panel itself appears to be well made and I have checked the voltage straight from the panel and I get 20 volts and you wouldn't want to connect this straight to your battery. And that is why you need a controller to lower the voltage and to apply either a steady current or a pulse charge which is just on off, on off etc. Haven't had any issues with the panel. It's definitely glass and can break so treat it gently. Haven't had any issues with water as of yet but I anticipate that it's waterproof. My only complaint is that when I set the float voltage to the battery on the included PWM controller, no matter what I set it at, in full sun the controller always charges the battery at 14 volts. And the same goes for when I set the output voltage, it will always be at the same voltage as what it's displaying on the screen and in full sun that's 14 volts. Most of the time if you are running something that is supposed to run from a 12 volt battery it's not a huge deal as most devices work fine at 14 volts because they are designed to, as when you're charging a 12v battery you want to charge it at least 13.8 volts which is typically what you see from your alternator in a vehicle. But if you're planning on running anything else just make sure you know what you are doing. As I mentioned, I am now using this on my house to charge batteries and I am planning on upgrading to Lithium batteries. I had to add some wire to the panel and I chose 16g for that and I'm not having issues. I'm using this for HAM radio so that I can always have a backup power source and this kit works great for this purpose! I would recommend this to anyone who just wants to keep their small lead acid batteries or lithium batteries charged. One thing to note is that the included PWM controller can only handle 10 amps. This means you can run a HAM radio but only one. Just do not exceed the amperage and you'll be fine. But I imagine that you could connect a inverter or something else as long as you connect it straight to your battery and bypass your controller. I don't see any reason why that wouldn't work. Just always be mindful of your voltage and amperage. ## Frequently Bought Together - Topsolar Solar Panel Kit 20W 12V Monocrystalline with 10A Solar Charge Controller + Extension Cable with Battery Clips O-Ring Terminal for RV Marine Boat Off Grid System - ExpertPower 12v 7ah Rechargeable Sealed Lead Acid Battery - JVR Automatic Chicken Coop Door Opener with Timer, Programmable, Aluminum Coops Doors, Electric Run Automatic Chicken Door Auto Opener, Actuator Motor, Safety Feature --- ## 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.it/products/136163039-topsolar-solar-panel-kit-20w-12v-monocrystalline-with-10a-solar](https://www.desertcart.it/products/136163039-topsolar-solar-panel-kit-20w-12v-monocrystalline-with-10a-solar) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-08*