The solar energy can be well harnessed and used at home. With the help of a solar panel charger you can easily trap solar energy coming out from the sun and convert it into electricity to charge batteries in your home. This saves a good portion of your electricity bills when you have large batteries to charge.The process by which photovoltaic cells charge a battery is simple. The only thing you have to do is connect the battery to the system and allow the solar charger system to carry the further work. The solar panels collect sunpower or energy from the sun rays and convert them into electricity. The electricity thus produced is then transferred to the device which would charge the connected battery.There are different types of batteries and there are specific chargers for them. Some chargers are quite powerful and compatible to charge different models of batteries; while others are less powerful, and much specific. Whatever solar charger you use they have solar panels to generate electricity. The amount of power and electricity they generate depends on size of the panel.All solar panel chargers are made up of individual photovoltaic cells. These solar cells are the units which are responsible for producing electricity. The more the number of cells are there in the solar panel the larger is the electricity output. So bigger solar panels produce more energy than smaller panels. Thus your need determines the solar panel you would install to charge your batteries. Some people instead of installing solar panel charger install large domestic solar panels or solar kits which are capable of producing large amount of electricity to run through grid of homes and support all sort of appliances. In that case you just need to plug in the charger of your rechargeable battery and get started with charging. But if you simply want battery charger then solar panel charger is enough to charge your batteries.There is a variety of solar panels that you will find in stocks of suppliers to charge your batteries. You have both fixed and portable solar power devices to charge your batteries. To charge small batteries like an iPod, mobile phome, laptop or others you can use portable solar charger. But when it comes to charging batteries of large devices or vehicles you need somewhat large devices. So the cost of solar panel you choose depends on your need.The technology used in all types of solar battery chargers like marine solar panels, PDA solar battery chargers, 12 V battery charger, automotive solar charger travel battery charger and others is the same. They utilize solar energy to convert it into electricity and charge the batteries.You will also find custom designed solar panel charger. The modern solar panels are manufactured keeping in mind various needs of people. There are folding, lightweight and portable powerful chargers in the market to which can give an out put of around 50 watt of electricity.