Rising oil prices and concerns about pollution are leading a significant number of people to look into solar battery chargers. Read on to find out more about different types of solar battery chargers, including how to build your own.
The simplest type of battery charger works by simply supplying a battery with electricity of the correct voltage. The battery is connected to the charger, and disconnected after it’s fully charged. A 12 volt battery can be recharged in a 15-18 volt power supply. The drawback to this system’s simplicity, though, is its risk of overcharging.
If you overcharge a battery, it’s likely that the battery’s functionality will be decreased, often significantly. In the event that you significantly or repeatedly overcharge a 12 volt battery, it may be damaged to the point that it will no longer hold a charge. However, there is a device called a charge controller that will make sure that the necessary voltage is used and prevent the battery from being overcharged. If you’re using a 12 volt solar charger, you’ll probably want to be able to leave it connected throughout the day while the sun is shining, in which case a charge controller is a must.
The most widely used type of charge controller for 12 volt batteries is a Pulse Width Modulation (PWM) charge controller. In basic terms, this type of charge controller works by flipping a switch on and off very quickly. In this sense, the switch is mostly “on” when the charging process is first activated. As electricity is moved to the battery, the switch spends more time activated than deactivated, and once the battery is fully charged, it no longer comes back on. A microprocessor chip controls and monitors the charging process. Thus, you can leave this type of charge controller plugged into a battery all day long if you like, since it will only transfer power to the battery when needed, without the danger of overcharging. This is called “trickle charging,” and it is a good strategy when you’ve got a battery that you might not necessarily use constantly, but would to make sure that it’s charged when it does need to be used. If you’re using a 12 volt solar charger, it’s useful to have this feature. This, in turn, will allow you to keep the 12 volt battery for your boat or RV charged for whenever you need it.
These are the basic components that make up a 12 volt solar charger. The source of the energy itself is the only thing that makes a 12 volt solar charger different. Solar battery chargers collect power through the use of a solar panel rather than from a wall outlet. Building your own DIY solar panel for use in a 12 volt solar charger is becoming more common. You can get more info by clicking on DIY Solar Panels.
1/2 volt and 3-4 amp solar cells are commonly used in the solar panels that you might see on buildings. Several of these cells have to be joined in order to generate the 15-18 volts necessary for a 12 volt battery charger. Currently, there are small solar panels of numerous different voltages on the market. The charger won’t work unless you match the voltage of the solar panel to your charge controller. The correct voltage is shown on the voltage rating, which is displayed on every charge controller. Generally, it’s best to use a solar panel of 15-18 volts if you’re not using a charge controller. If you are using a charge controller, the required voltage is just that – required. GreenDIYEnergy is the best guide to building your own 12 volt solar charger. To read more, visit GreenDIYEnergy.
The method for wiring the solar panel to the charge controller is contingent upon certain factors within the controller. Generally, it’s safe to solder the same kind of connector onto the solar panel that you have on your charge controller. If you aren’t using a charge controller, use the type of connector that’s on the battery instead. Spring loaded clamps are a good choice with most larger 12 volt batteries. For non-mechanically inclined types, you don’t necessarily have to solder (although this type of soldering is very simple); it’s possible to just twist the wires together and use electrical tape. You’ll only need a simple soldering iron and solder, which you can get cheap at places like Radio Shack. Just twist the wires together, use the soldering iron on the wires, and touch the solder to the wires until it melts. You just have to be careful not to burn yourself, and to apply heat directly to the wires, not the solder, with the soldering iron – the solder is then melted by the heated wires. Another guide to building your own 12v solar charger that I recommend is Homemade Energy. To read more, visit Homemade Energy Review.
That’s all you have to do! If you can do that, you can build a 12 volt solar charger without any problems. A 12 volt battery is the first component. A charge controller with the appropriate voltage is also necessary. The solar panel, which you can build yourself or buy, should also have the same voltage. Finally, connect the solar panel to the charge controller, and the charge controller to the battery. After you’ve done this, you’ll have permanent, free power! By using solar energy instead of oil to charge your battery, you’re helping reduce pollution and dependence on foreign oil, and saving yourself a lot of money in the long run.