I've got a solar setup generating about 40 volts and 30 amps, but I have some unused Bluetti units: two EB240s and one EB120. Each can take a max of 60 volts and 10 amps. I'm thinking about using an MC4 splitter to reverse the flow and distribute power from my solar source to the three Bluetti units. My question is whether that would work without damaging anything. Would the splitters allow the power to be distributed adequately without causing issues? I'm a bit hesitant to try it out without some advice first, as I can't safely access the panels on the roof right now. Any insights would be greatly appreciated!
2 Answers
Using MC4 connectors this way shouldn't damage your devices, but it's recommended to split the solar array into separate parts to feed each unit directly. Just makes everything simpler and safer!
You really shouldn't connect multiple MPPT controllers to the same source, because they could end up conflicting with each other. However, if you're using PWM controllers instead, you might have better luck doing this.
That's interesting, thanks for this information!