---
product_id: 160054133
title: "20W solar panel kit"
brand: "topsolar"
price: "904 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Topsolar"
url: https://www.desertcart.dk/products/160054133-20w-solar-panel-kit
store_origin: DK
region: Denmark
---

# 10A PWM charge controller 20W high-efficiency solar power Compact & waterproof for outdoor use 20W solar panel kit

**Brand:** topsolar
**Price:** 904 kr
**Availability:** ✅ In Stock

## Summary

> ☀️ Power your freedom with smart solar energy—never get left in the dark again!

## Quick Answers

- **What is this?** 20W solar panel kit by topsolar
- **How much does it cost?** 904 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/160054133-20w-solar-panel-kit)

## 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

- • **All-Weather Durability:** Waterproof junction box and rugged panel design built to withstand marine, RV, and outdoor environments.
- • **Plug & Play Simplicity:** Pre-drilled mounting holes and included cables make installation fast and hassle-free—perfect for busy pros.
- • **Versatile Off-Grid Solution:** Ideal for cars, boats, RVs, sheds, and remote setups—empower your lifestyle with clean, portable energy.
- • **Smart 10A PWM Charge Controller:** Protect and optimize battery life with advanced pulse-width modulation technology.
- • **Reliable 20W Monocrystalline Power:** Harness consistent, high-efficiency solar energy to keep your 12V batteries charged anywhere.

## Overview

The Topsolar 20W 12V Solar Panel Kit is a compact, high-efficiency monocrystalline solar solution designed for off-grid battery maintenance. Featuring a 10A PWM charge controller and waterproof junction box, it ensures reliable, optimized charging for 12V batteries in cars, RVs, boats, and outdoor setups. Easy to install with pre-drilled holes and included cables, this kit is perfect for professionals seeking a durable, portable, and eco-friendly power source.

## Description

Topsolar 20W 12V Solar Panel kit Battery Charger Maintainer + 10A PWM Solar Charge Controller +Solar Cable for Car RV Marine Boat 12 Volt Battery Off Grid : desertcart.co.uk: Business, Industry & Science

Review: Very good purchase - Bought this to set up some lighting in my shed. Fairly straightforward to fit it all together although the instructions are tiny and I had to look up most of the terms. Had to replace the batteries on the wife’s mobility scooter so the old ones will be useful just for lights. So far so good, it all seems to be working OK after a couple of weeks, battery staying charged enough for lights. Made a wooden frame to attach the quite sturdy panel to the side of the shed (not much direct sunlight this time of year but will be in a few weeks time) and put the controller inside. The lead was a bit short so extended it using some 13 amp twin and earth electrical cable which seems to work alright. Overall a good buy for the price and useful as my first foray into a solar power project and my led light strips work fine, who knows I may be expanding it soon!
Review: Easy to set up totally suitable for my purpose. - I bought this solar panel to trickle charge a car battery in the shed. I use the battery for a 12v lighting system and a small inverter as I have no mains power in there. Its May at the moment and we do have a reasonable amount of sun but I have to say the panel is doing an excellent job of keeping the battery topped up. The panel doesn't have much in the way of mounting brackets, there are simply four holes in the inner surround of metal. It was a bit fiddly but with use of some suitable nuts and bolts I fed the bolts through the holes in the surround, through the wall of the wooded shed and put washers and nuts on the inside. I then put a bead of sealant around the panel to stop the rain dripping down the back. Although fairly generous the leads from the panel to the power controller were not long enough for me so I ended up extending them which is straightforward enough just ensure you get the polarity right. Its worth using good quality wire as thick as that supplied (at least) so you don't get too much of a voltage drop. The power controller isn't the best or the most complex but I found the default settings work fine for my purpose, just follow the instructions to connect everything in the correct order. You can alter the charge voltage and cutout voltage if you wish. The screw fittings for wires on the controller are a little unconvincing but seem OK in practice. At the price point I'm pleased with this panel and I now have exactly the setup I wanted in my shed.

## Features

- Solar panel kits, including 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.
- Widely applied to off grid 12 Volt battery charging system and a variety of DC applications, including caravan, RV, car, boat, green house, marine, dry camping, garden watering etc.
- 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.
- Waterproof Junction Box: Advanced water and dust proof level (complete protection against environmental particles and low pressure water jets).
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC adapter current | 10 Amps |
| ASIN | B07RZBVTGR |
| Amperage Capacity | 10 Amps |
| Best Sellers Rank | 33,858 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 5 in RV & Marine Solar Power Systems |
| Brand | Topsolar |
| Connector Type | USB |
| Country of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 4,993 Reviews |
| Efficiency | High efficiency |
| Included Components | NO |
| Included components | NO |
| Item Dimensions L x W x H | 80L x 40W x 2.5H centimetres |
| Item height | 2.5 centimetres |
| Manufacturer | Topsolar |
| Material | Monocrystalline Silicon |
| Maximum Power | 20 Watts |
| Maximum Voltage | 12 Volts |
| Model Number | TOPSPM |
| Product dimensions | 80L x 40W x 2.5H centimetres |
| UPC | 736256963690 764686116546 786515614139 735661123187 752502123205 752509632052 752585963699 746548912510 756464631891 754147981646 785896032259 732696987562 746581614648 746541982411 605646777158 721526987452 |

## Product Details

- **Brand:** Topsolar
- **Material:** Monocrystalline Silicon
- **Product dimensions:** 80L x 40W x 2.5H centimetres
- **Efficiency:** High efficiency
- **Included components:** NO

## Images

![20W solar panel kit - Image 1](https://m.media-amazon.com/images/I/71-hHjE87nL.jpg)

## Questions & Answers

**Q: how harm full is for a person**
A: Very harmful if you ate it. I wouldn’t use it as a parachute either.

**Q: The Solar charge control keeps fading out, I am just trying to use the solar panel to charge usb devices. So far no luck, is mine broken?**
A: Do you have a 12v battery attached?  You need a battery attached, the panel is not designed to run anything directly, it is designed to trickle charge a car battery.  The power from the car battery is what will charge your USB devices.

**Q: can i leave this system connected to the car permanently ie even whilst driving ? TIA Pam**
A: I wouldn't have thought so, you would need to isolate the controller, as your car alternator will be charging your battery as you are driving. there are controllers on the market that are able to be connected to a running charging system, they are a lot more expensive than this system.

**Q: Is the solar panel waterproof, can i mount it outside?**
A: The solar panel is fine, but I do get issues occasionally with the controller when wet.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very good purchase
*by J***Y on 29 January 2025*

Bought this to set up some lighting in my shed. Fairly straightforward to fit it all together although the instructions are tiny and I had to look up most of the terms. Had to replace the batteries on the wife’s mobility scooter so the old ones will be useful just for lights. So far so good, it all seems to be working OK after a couple of weeks, battery staying charged enough for lights. Made a wooden frame to attach the quite sturdy panel to the side of the shed (not much direct sunlight this time of year but will be in a few weeks time) and put the controller inside. The lead was a bit short so extended it using some 13 amp twin and earth electrical cable which seems to work alright. Overall a good buy for the price and useful as my first foray into a solar power project and my led light strips work fine, who knows I may be expanding it soon!

### ⭐⭐⭐⭐⭐ Easy to set up totally suitable for my purpose.
*by R***D on 30 May 2024*

I bought this solar panel to trickle charge a car battery in the shed. I use the battery for a 12v lighting system and a small inverter as I have no mains power in there. Its May at the moment and we do have a reasonable amount of sun but I have to say the panel is doing an excellent job of keeping the battery topped up. The panel doesn't have much in the way of mounting brackets, there are simply four holes in the inner surround of metal. It was a bit fiddly but with use of some suitable nuts and bolts I fed the bolts through the holes in the surround, through the wall of the wooded shed and put washers and nuts on the inside. I then put a bead of sealant around the panel to stop the rain dripping down the back. Although fairly generous the leads from the panel to the power controller were not long enough for me so I ended up extending them which is straightforward enough just ensure you get the polarity right. Its worth using good quality wire as thick as that supplied (at least) so you don't get too much of a voltage drop. The power controller isn't the best or the most complex but I found the default settings work fine for my purpose, just follow the instructions to connect everything in the correct order. You can alter the charge voltage and cutout voltage if you wish. The screw fittings for wires on the controller are a little unconvincing but seem OK in practice. At the price point I'm pleased with this panel and I now have exactly the setup I wanted in my shed.

### ⭐⭐⭐⭐ Size discrepancy.
*by A***E on 17 July 2025*

Very good, works well even in overcast conditions. However, there is an error in the description. The size is 470x395x20mm, not as stated.

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-30*