It will cause that battery's voltage to drop while the other's voltage stays the same. LoadsĬonnecting a load to one battery only is a bad idea for the same reason as charging them separately. I would not recommend doing this without a charge controller as you may push too much current into your battery, creating a fire hazard. In this case, you can add a second 24V panel in parallel. If you find that the motor is struggling to put out enough power to move the gate even in full sun or you have a really high amount of traffic, such that the gate is getting sluggish in the latter part of the day, the battery may be draining faster than the panel can recharge it. Step 4: Add an additional 24V panel in parallel Head on over to Hardware Recommendations if you need help finding one. This will regulate the power going to the battery and help it last longer. If you find that a new battery fixes the problem for a year or 2 and then it returns, invest in a charge controller to go between the solar panel and battery. Running a solar panel directly into a battery is pretty common for simple systems, but it will cause the battery to wear out more quickly. (Ex: Go from 2x 12V 1Ah batteries to 2x 12V 2Ah batteries.) Step 3: Get a charge controller If you have enough room, and you are getting a lot of traffic when it is cloudy or dark, getting larger batteries will let you store more power. If you are getting plenty of power when the sun is out, then adding another solar panel will not make a difference, you need to store that power for later. The batteries will wear out much sooner than the solar panels will and need to be replaced every few years. You probably only need to worry about this step. Wiping off the panel, even if it doesn't look dirty, can make a big difference. Simple, easy, you've probably already tried it.
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