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Sunforce 5-Watt Solar Battery Trickle Charger

Updated on April 23, 2013

The One Thing You Need To Be Sure Your Battery Is Always Charged

We all rely on batteries for all sorts of vehicles or appliances.

People have boats, mobile homes, lawn tractors, log splitters, backup generators, off-road motor cycles, jet-skis and many other items that require a fully-charged battery to get going.

The problem is that, if you don't use them regularly, the battery gradually discharges. Most of these vehicles or appliances are used in many different places, some of them away from mains power.

How do you keep your batteries continuously charged?

Fortunately the sun is everywhere, even if it is behind some clouds.

With a 12 volt solar battery charger, like the Sunforce 5 Watt Battery Trickle Charger, all you need is sunlight (even overcast) and you will have complete battery peace of mind.

The 12 Volt Solar Battery Charger Of Choice

5 Reasons Why The Sunforce 5 Watt Trickle Charger Is A Great Choice

A solar battery trickle charger is really quite a simple device. It needs to be robust, easy to install and use, and it should do the job. The Sunforce 5 Watt does exactly this.


1. It is easy to install because it has 4 holes in the frame to ensure that it won't rattle or shake loose when travelling.

2. The wire supplied with it is long enough to reach the battery or cigarette lighter plug easily.

3. It has a 12V DC cigarette lighter plug for easy connection if your vehicle or boat has a socket.

4. It is supplied with stainless steel screws to prevent rust in outdoor or marine installations.

5. It is provided with battery clamps for quick connection/disconnection.

Smokin' On The Water

There is nothing worse than launching your boat and drifting whilst struggling to start the motor.

Often boats are stored through the winter and, when the first warmer weather arrives, you want to be able to get going at a moment's notice. There are two things you need - fresh fuel (fuel only lasts 3 months before it goes off) and a fully charged deep-cycle battery.

The great thing about the Sunforce 5 Watt is that it keeps your boat battery charged through the winter. All it needs is 2 or 3 hours of sunlight per day (users say that even overcast weather has sufficient light).

Because all the components are plastic and the mounting screws are stainless steel, the Sunforce 5 Watt is ideal for marine applications. One user reported that he even got it soaked with no ill effects.

No longer will you have to worry about that sinking feeling when you turn the boat key and the motor will not turn over.

12 Volt Solar Charger

What's A 12v Solar Battery Charger Doing Inside A Car?

I live by a lake. The other day someone knocked on my door and asked me whether I had a battery jump starter. He had been camping by the lake and used his headlights during the night.

With a Sunforce Battery Trickle Charger, all he would have needed was a few hours the following morning to restore enough charge to start his vehicle.

More commonly, though, people use the Sunforce 5 Watt to keep seldom-used vehicles' batteries fully charged. One user lives permanently in a campsite and runs a laptop, TV, cellphone and a light on his battery. The Sunforce 5 Watt keeps the battery continuously charged.

Please remember that, with the windows shut, the temperature in side a car can reach extremely high levels. It is advisable to locate the charger where it receives good light but is shielded from temperature extremes.

A Guide To Battery Maintenance Using Solar

If your reason for investing in a 12v solar battery charger is to maintain the charge in your battery, there is no need to spend more than necessary.

5 watts is plenty of power to keep a mobile home, boat, RV or car battery charged up. In good light the Sunforce 5 Watt generates well over the rated voltage and it is capable of maintaining the charge in 2 deep-cycle batteries through the winter.

If your budget is a little more than the price of the Sunforce 5 Watt, I would combine it with a charge controller and/or a charging system monitor.

The charge controller will protect your batteries from overcharging and discharging. It is essential in systems generating 15 watts or more, and a good idea for smaller systems like the 5 watt.

A charging system monitor will tell you exactly what the state of charge is in your batteries.

Please Give Us Your Opinion

To what extent do you agree or disagree with this statement: "Solar power is the energy source of the future".

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12 Volt Solar Charger Options And Accessories

What Do You Think Of The Idea Of A Portable Solar Charger?

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    • Loganor profile image

      Loganor 5 years ago

      This is a very handy device. Here in the desert we have plenty of sun, and it is not advisable to break down in the heat either.

    • BrianLGilman profile image

      BrianLGilman 5 years ago

      I gotta say, this is one product no car should be without. Too many benefits to mention....:)

    • Webinaut profile image

      Webinaut 5 years ago

      @Donallphin: Thanks for your feedback, Donallphin. As farmers we had so many items of equipment (crop trollies, for example) that ran on batteries. I remember one day having to use a 200 foot extension lead in the greenhouse to run off mains power because the batteries were dead. I wish we had this product at the time.

    • Donallphin profile image

      Donallphin 5 years ago

      I understand the need for a good trickle charger. I boat a lot and also ride ATVs and there is nothing more frustrating than being out in the middle of nowhere without the battery to get things going. Thanks for an informative and practical look at this problem.