But I need some electricity down by my veg patch, mostly to power a watering pump, but I can use it for other things as well. Getting a full power mains cable there would be a nightmare, so I decided to try a little solar project. For less than €350 I got the bits for this installation that gives me just over one kWh of battery storage, plus whatever the sun is providing at the time. I could probably just use bigger batteries for more power if I needed it.
I'm keeping the wires long since we might be selling up and I don't know where I will be installing this sytem in future.
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Just bear in mind that resistance is the enemy of any power generating and distribution system. I appreciate that you might want to move this system elsewhere, but consider using shorter cables if you can. If you have access to a basic digital multimeter, you could try measuring the voltage drop on each lead when the panels are facing the midday sun. Even half a volt (500mV) will make a difference...
Hi Microdave, you are of course right. And I have plenty of wire so if it looks like this installation will be here for a while I will tidy things up a bit. The max charging current seems to be a couple of amps while the batteries are close to full. I don't yet have the pump I will be using but it will consume 200W at 24V so I will connect it directly to the battery with a short length of thick wire.
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