Buggies Gone Wild Golf Cart Forum - View Single Post

cgtech · 11-02-2017, 02:55 AM

I have built lithium RXVs with Danaher controllers. I used LiFePo4 cells. Nominal voltage was 52.8v, "fresh off the charger" voltage was 56v. Never had any problems. The factory "fuel gauge" will never read correctly tho (I used a new gauge in that spot, reading from the BMS). Never had a controller failure on those. They have been very reliable ones, because acid never got to eat the wire harness. Problem is, the BMS I liked to use is no longer in production. If your voltages are below 60v you likely haven't fried anything. The rxv is designed to accommodate high voltages, because of it's brake system design (using the motor as a generator is all the "regular" brakes). It is designed to withstand voltages up to the area of 67v, then start "burning off" energy to protect itself. It has a whole circuit just to "burn off" excess power. What voltages are you seeing at the main battery terminals?

11-02-2017, 02:55 AM	#4
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: rxv .. chevy volt conversion.. I have built lithium RXVs with Danaher controllers. I used LiFePo4 cells. Nominal voltage was 52.8v, "fresh off the charger" voltage was 56v. Never had any problems. The factory "fuel gauge" will never read correctly tho (I used a new gauge in that spot, reading from the BMS). Never had a controller failure on those. They have been very reliable ones, because acid never got to eat the wire harness. Problem is, the BMS I liked to use is no longer in production. If your voltages are below 60v you likely haven't fried anything. The rxv is designed to accommodate high voltages, because of it's brake system design (using the motor as a generator is all the "regular" brakes). It is designed to withstand voltages up to the area of 67v, then start "burning off" energy to protect itself. It has a whole circuit just to "burn off" excess power. What voltages are you seeing at the main battery terminals?