Creating a 72V, 20s 5p Battery  


New Member
Joined:3 weeks  ago
Posts: 1
29/12/2017 12:59 pm  

I wanted to run some things by the community here. Our senior design is making an EV and we would like to do a 72V system.  Using the LG 18650 cells could we create a 72V system. On here there are only kits that go up to 52V but If we use a different BMS but the cells and connectors from Vruzend, would a 72V system be possible? 

We are looking at using a 20s and 5p arrangement to give us 72.7V and 17.5Ah using a total of 100 cells. The BMS that we plan on using is located here: . The charger that we are looking at is located here: . These are examples of components that we have found in our initial research. 


We are learning throughout this process and would really appreciate all input and suggestions. Thanks.

Micah (Vruzend Rep)
Street cred = 1 Ah Admin
Joined:9 months  ago
Posts: 243
11/01/2018 1:49 am  

Yes, a 20s configuration would definitely work. Just make sure that whatever battery you are building can handle the max current (A) needs of your motor/controller. 

That BMS looks like it should do the job for you, but I don't see a 20s li-ion charger on that page. I only see a 20s LiFePO4, which is not what you want. You need an 84V charger for 20s li-ion. You might be able to get the 21s charger and tweak the output voltage lower with a potentiometer inside the charger - check with the vendor on that. 


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