Our 5 highly recommended best solar battery charger for boat accessories and vital boating functions. But before we dive in, why do boaters need solar battery chargers while they are out on the water?
Solar battery chargers
These solar battery chargers for boating are designed to recharge the batteries of your boat during certain circumstances.
An example of one such circumstance, would be if you were out on the water and had some equipment like a fish finder or GPS that ran off of battery power and your boat’s engine was not running (more on this later).
Solar battery charger: crucial must have!
This solar battery charger is an absolutely vital piece of equipment for you to have on your boat if you plan to do any type of boating that will require you use power tools or other accessories off of battery.
This is because the deep cycle marine batteries that are installed in most boats, typically take anywhere from 8-12 hours to fully charge when they are being fed a steady supply of energy from the boat’s engine.
In other words, if you will be out on a larger body of water for an extended period of time and want to use some boating accessories that require a power source, you had better have a solar battery charger or another means of charging your boat battery.
Solar battery chargers: sizing up your options
If you are looking to buy a solar battery charger, there are only two type of solar panels that boaters should be concerned with.
These types of panels include monocrystalline and polycrystalline. Polycrystalline solar panels are typically cheaper than monocrystalize ones but they also have lower performance ratings (wattage).
Monocrystaline solar panels are said to have less of a performance drop when the intensity of the light hits them drops.
As such, monocrystaline cells can maintain a higher output at lower light conditions. However, polycrystalline panels are less expensive and also lighter in weight providing more options for mounting.
Mounting options: what to look for
If you are looking for a solar battery charger, look for one that comes with stainless steel mounting hardware.
This is because the metals used in cheaper mounting brackets will eventually rust and need replacement.
Remember if you plan on keeping your solar battery charger mounted on your boat during long periods of non-use, you should take it down from its mount and store it dry to prevent corrosion.
Also be sure to select a solar panel that has a framing system that best fits within your budget and easy of installation requirements. A few quick tips: If you know that you will not be able to charge your boat’s battery via means other than an engine powered generator, do not bother with a solar battery charger.
If you have a couple of 12V marine batteries, it is best to buy a solar battery charger that has one or two panels as opposed to buying a larger panel with more wattage capacity if your boat requires multiple batteries.
Finally, find out the weight limits on any mounting hardware that comes included with your solar battery charger and keep those limits in mind when installing your system.
By doing so, you can ensure that your boat’s deck structures won’t be compromised by the added weight of the solar panels during boating trips.
In some cases this might necessitate purchasing new mounting hardware from an outside source (i.e., McMaster-Carr).
List of the best solar battery chargers for boats:
- ECO-WORTHY 12W
- Sunway Solar Car Battery Trickle Charger
- Topsolar Solar Panel Kit
- SUNAPEX 12V Solar trickle Charger
- XINPUGUANG Solar Panel
ECO-Worthy Solar Battery Charger
10W 12V Solar Car Battery Charger is the perfect trickle charger/maintainer for 12V batteries of cars, motorcycles, boats, snowmobiles, tractors and more.
Please note that the protective plastic film on the panel surface is supposed to peel off. The cigarette plug option only works if it has constant power when the key is out of the ignition. When you start the car, please remove the solar panel from the car battery
Charging 12V rechargeable batteries in emergency, suitable for vehicles in outdoor work or travel or camping training. Easy to install and completely maintenance-free.
Comes with the cigarette lighter adapter, 1 pair of battery clips and 4pcs PVC suckers. Unique design-high quality clips to prevent short circuit.
Environmental protection and energy saving, built-in blocking diode to prevent reverse discharge, not only maintains the battery lifetime but also extends its usage life.
Sunway Solar Car Battery Trickle Charger
Designed to compensate for small, steady battery drains from the vehicle’s clock or alarm system.
Solar Panel Power Up To 4W
Keep your 12 Volt batteries topped off with this solar battery trickle charger ,which helps to manage 12v battery drain in all seasons.
Simple And Very Easy to Use
This solar trickle charger will NOT overcharge the battery or cause any damage if the battery capacity is 20Ah or greater, .The solar charger panel mounts easily to the windshield or dash and conveniently plugs into your car’s 12 volt cigarette lighter! Suction cups available with the solar charger.
Stronger and Durable
This solar powered battery charger is Covered with ultra clear PV glass which is more efficient and also with Durable ABS plastic housing which makes this solar panels charger more stronger. Low Maintenance!
For Any Rechargeable 12Volt Batteries
This solar battery trickle charger is the eco-friendly way to maintain and safely charges Wet, Gel, SLA, AGM and Deep Cycle batterie. It can maintain the charge of any cars, trucks, marines, motorcycles , tractors, ATVs, snowmobiles, boats and personal water crafts or RV 12 volt battery!
Reverse Charging Protection
With BUILT-IN DIODE for prevents reverse charging from batteries.With a 12volt LED charge indicator. The Led light up when it is charging. The solar charger maintainer Includes cigarette lighter adapter and alligator battery terminal clamps.
Topsolar Solar Panel Kit
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, 25 years transferable output warranty and 1 years material and workmanship warranty.
SUNAPEX 12V Solar trickle Charger
Battery Charger, Battery maintainer Portable Power Solar Panel Suitable for Car, Motorcycle, Boat, ATV,Marine, RV, Trailer, Snowmobile and more.
Charging in any weather
Solar panel battery charger, it uses amorphous film technology and it can charge batteries under various weather conditions with a wide range of applications.
Built-in indicator lights, which will turn on when solar panels generate electricity. At the same time, a reverse diode is built in to prevent the battery from discharging back to the board at night.
Easy to maintain
Weatherproof solar battery charge, it uses high-strength solar energy glass which has strong light transmission and can resist hail, rain and snow, and is easy to clean.
XINPUGUANG Solar Panel
100W 12V Monocrystalline Flexible 200W System Kit Hightweight Solar Battery Charger with PV Connector for RV Boat Cabin Tent Car Trailer.
Solar panels use new Perc solar monocrystalline cells, up to 22% conversion rate, 100w solar panels are smaller, lighter and more portable
The plastic back sheet can be curved to a maximum 30 degree arc and mounted on RV, boat, cabin, tent, car, trucks, trailers or any other irregular surface.
Thin & Lightweight：
100W solar panel weighs approximately 4lb,Thickness is 0.1in，weighs 70% less than conventional solar panels, making transportation and installation a breeze.
Light energy converts electricity, Practical and suitable for use in areas where electricity is not available and where the city cannot reach, such as mountains, marine, deserts, and remote areas
The component contains a bypass diode, and the circuit uses input over current protection and reverse protection design.The solar panel has 6 grommet mounting holes are available to attach fasteners，and can also be installed with silicone and adhesive tape.