I recently got a Pecron E3600LFP and I'm looking to charge it using my 72V e-moto battery to add an extra 3kWh through one of the solar panel ports. The input can handle voltages between 30-150V, but it has a max power limit of 1200W per input. I'm worried about overloading the connection since it's a high-output battery, and I'm not too familiar with how the charge controller works in this unit. Would a 20A charge controller help limit the current? I'm also considering a DC-DC step-down regulator, but most have lower power ratings and I've had trouble finding one that fits the 84V to 30-150V range. Any advice would be appreciated!
2 Answers
No need to stress too much! The Pecron won't draw more current than it can handle. It's designed to negotiate the power coming in. Just make sure your voltage stays within limits. Since the max input is 150V and it handles up to 1200W, your e-moto battery won't be a problem; it'll draw just what it needs based on the wattage you mentioned (about 16.6A at 72V).
Exactly! Just keep an eye on those voltage levels and everything should go smoothly. You’ve got this!
You don't really need to worry about the max current of your battery. The way it works, the load will dictate how much current is drawn, not the battery itself. As long as you're set with compatible voltages, it should charge properly without exceeding the 1200W limit. Just make sure your connections are solid and everything will work out!
Exactly! Just keep in mind that amperage is determined by wattage divided by voltage, so you're safe there. It's mostly the voltage that could be a concern, but you should be fine with the Pecron and the battery's output.