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Maximum inverter size based on BMS

DaveM

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Jan 14, 2020
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Hello. I have two SOK 206ah batteries coming. I will connect them in series for 24v / 206ah. The BMS in each battery has a maximum discharge current of 100a. How do I calculate the largest inverter I can use when the batteries are connected in series?
Would it be 24v x 100a = 2400 watts?
 
Yes that is correct. (Don’t forget about inverter inefficiency).

Will a 2000w inverter be ok for your loads (remember to look at the actual delivered watts in the spec sheets). If yes, go with that.

If you go with a 3000w inverter, you can get more out of it than the 2000w - but you will not be able to max it out. (Unless you change bms’s or add two more batteries in parallel). It’s all about your loads.
 
Thank you. I wanted to be sure I was thinking about this correctly. I appreciate the reply. ?
 
Hello. I have two SOK 206ah batteries coming. I will connect them in series for 24v / 206ah. The BMS in each battery has a maximum discharge current of 100a. How do I calculate the largest inverter I can use when the batteries are connected in series?
Would it be 24v x 100a = 2400 watts?
100 amps * 24 volts low cutoff * .85 conversion efficiency = 2040 ac watts
 
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