Match that to my generator (45amp) I need two 21 amp chargers (42a) to get close enough to 45a so you 're going to have to calculate tthat down to 55. ![]() The chargers amps are rated at their maximum volts (58v). (warning back of the napkin math, you could probably nitpick)ħ5% of that: 2475 (due to 25% loss in ineffiency, guess here, making the worst case scenario)Ģ475 / 55v (55v is the average it's going to spend most of its time from my experience) My generator (at propane) max output: 3300 You have to consider this: the ineffiency of the charger. If you're paying $3 for propane or $6.90 for gas (like me!), that's a buttload of money. Generators are more fuel efficent if they are at near 100% load (except inverter generators), so you want to match your generator's 100% output to the charge output. BMS is in charge Multi doesn't add when params are met. If the charge parameters in the Multi are set to not exceed the pack voltage and temp sensors, seems like the MultiplusII will stop charging. Looking at Victron's "Manual-connecting-other-lithium-battery-systems-to-Multis-and-Quattros-EN.pdf" they talk about their "assistant" software and wiring that has a temp sense feedback and "allow to charge" which I am assuming means "charge under this voltage." EG4 bms has voltage and temp and some jacks on the front of the pack for communication. I am building out an EG4 48v batt bank, and I am close to purchasing 2 Victron MultiplusII 48/3000/120v units that will work together for 120/240. The Mulit's Charger would be used from grid AC in cases where solar is inadequate to keep the bank charged and/or of grid down a generator will be used.īMS will stop the charging anyway based on its settings.ĭoes anyone have concerns about this design? Anything I missed? ![]() They also would be set to charge based on the battery specs. I am adding a couple of Victron Solar Chargers that will directly charge the battery pack during the day. Standby LED Solid Orange: Battery voltage is too low for the battery charger to detect the battery.Click to expand.I am building out an EG4 48v batt bank, and I am close to purchasing 2 Victron MultiplusII 48/3000/120v units that will work together for 120/240. Double check the battery matches the charge mode.Įrror LED Solid Red: Reverse polarity. ![]() Triple Flash: Battery voltage is too high for the selected charge mode. Single Flash: Battery will not hold a charge and should be checked by a professional.ĭouble Flash: Possible battery short, and should be verified by a professional. Each flash pattern tells you what's wrong, and how to quickly fix it. Welcome to Advanced Diagnostics, which analyzes battery feedback and display a particular error pattern if a problem is detected. Understanding and finding a solution is just as critical. Sometimes they will begin force charging if they detect an unsafe or abnormal charging condition. They do not simply begin charging upon detecting a weak or damaged battery. Smart industrial battery chargers can be frustrating.
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