Hi all! How you doing? I have a classic prius, thats got a Major HV battery problem... It starts, But dont drive! & the only Warning light I am getting on the dash is the MAIN BATTERY icon in Red...(IF I can remmeber properly) I did have the car read for code, & this is what they came up with: P3001 - HV Battery Malfunction P3030 - P3100 - HV Ecu Malfunction P3115 - System Main relay Malfunction P3125 - Converter Inverter Assembly Malfunction What do you reckon I am in for? Any of you had these errors? I have long thought about rebuilding the battery, & have just recently picked up 2x NHW20 battery's... from the 2nd gen prius models... (apparantly ones form a 2006, & the other from a 2007) I have also today taken out the OLD HV battery from the car & for reference: Most of the modules were reading 6.5volts... a few pairs had dropped below 6volts... what do you recon? I have not taken ANY of the BUS bars etc of ANY of the batterys yet, Only the HV Fuse etc... Only been trying to use my Multi meter's on them & test for readings... Gen 2 modules are reading 7.5volts in one battery, Did check the other when I got it, but its been a whilst, Will label all the cells & the readings aswell for reference..