Calculate Recharge Rate With 100 Watt Solar Panel

If you are connecting to an off the shelf battery pack there are a number of reasons that the charge rate could be worse.

Calculate recharge rate with 100 watt solar panel.

For example if the solar panel is rated at 175 watts and the maximum power voltage vmp is given as 23 6 volts then calculate the current as 175 watts divided by 23 6 volts which is equal to 7. So solar panel must be rated at 10 amps so that at peak sunlight it gives 10 amps and gradually becomes lower until it drops at 2 amps by evening. Again assuming a fully depleted battery you would need 20 amps average charging current 100 ah 5 hours. 6 watt solar panel charging a 4 000mah 3 7v battery time 14 8wh 6 watts x 2 4 9 hours.

If your system is 12 volts nominal this is what i recommend you do. Solar panels usually range in wattage output from around 250 watts to 400 watts but some panels exceed the 400 watt mark. But clearly a 200 watt solar panel can charge at a rate of roughly 15 17 amps per hour. Solar pcu is a device through which you can directly connect your solar panel and your battery charging will start without any solar charge controller because it has a inbuild charge controller.

This is a simple version for estimates only. Now on the voltage of the panel you need a panel capable of up to 14 5 volts to fully charge the battery even when it starts charging at. Or you can use a 12 x 5 60 watt panel if you can keep its direction continuously angled towards the sun. You can get the amount of energy it will provide the battery by multiplying 10 watts by 6 hours which will give you 60 wh.

Amps 200 watts 12 volts. So if you have a solar panel that with a 10 watts power rating and it is exposed to sunlight for at least 6 hours. Most crucially 100 watt solar panels provide you less bang for buck i e. This means that on that scenario the solar panel delivered 60 watts of power to charge the battery.

All of these factors mean that a home solar system built with 100 watt solar panels simply isn t worth it. 200 watts 12 volts x. You get less watt per dollar when compared to larger panels. The solar panel with the highest watt is the sunpower e series a commercial solar panel line.

The top panel in the e series comes out at a whopping 435 watts. So the solar panel practically should be 12 x 10 120 watts. Amps 16 2 3 amps. Say you use a 200 watt solar panel.