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Magnum Controllers??
Here are 2 pictures of Magnum Controllers 1st is the standard ME-RC controller and 2nd picture is the up grade Magnum ME-ARC Advanced control. Is there a advantage to use the ME-ARC for Lithium Batteries??. The ME-RC has a setting for CC-CV Constant Current- Constant Voltage (amps & Volts) and a Custom setting, both settings you can use for Lithium, The ME-ARC has a setting for Lithium, What is the advantage?? If any??
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4 Replies
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Huge advantage for the ME-ARC.. You can set up the CC/CV parameters and have four options for ending the charge time, voltage, SOC, and returned amps.
I am a huge fan of using returned amps for ending the charge because it effectively solves the problem of drifting SOC.
Voltage is poor way of ending the charge on Lithium setups.
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Hey Richard! Do you know much about the Magnum ME-BMK?? Yesterday a rainy day I was reading that 1 ME-BMK can link to both of my MS-2812 inverters through the ME-ARC controller and will control Lithium battery charging?? Do you know much about that??
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Bottom line is they are a MUST when using Lithium batteries. It’s more accurate way of measuring amps in and amps out on the batteries.
One glitch, confimed by the engineers at Magnum was the charger measures the voltage at the charger, not at the BMK. I learned this because I was getting a different voltage at the batteries than at the charger. And when you are asking the charger to make decisions on 0.1 Volts for establishing full charge, then that’s a problem. That’s why I converted to stop charge on returned amps. I had a 1000 amp hr bank. I stopped the charge when the charger got down to 50 amps or O.5C.
I am pretty sure we had this same conversation on IRV2.
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I think so
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