Cheap fixes for dying 2 gen 2005 Prius hybrid battery

Buy this elm327, then buy the app torque pro for android phone.This will give you a starting point where to begin finding the bad cells.
https://www.google.com/aclk?sa=l&ai=DChcSEwiBwYT3y4zfAhUXW4YKHRIJDbEYABABGgJ2dQ&sig=AOD64_1VzdmsAgVbSQeQZfw7TlVZpZyVNA&adurl=&ctype=5&q=&nb=0&res_url=https%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Delm%2B327%26fr%3Dyfp-hrmob-s%26fr2%3Dp%253Afp%252Cm%253Asa%26.tsrc%3Dyfp-hrmob-s%26type%3D%26fp%3D1%26toggle%3D1%26cop%3Dmss%26ei%3DUTF-8&rurl=https%3A%2F%2Fwww.yahoo.com%2F&nm=2&nx=88&ny=22&is=344x265&clkt=49&bg=!aWqlanJEnfYoB7UIeocCAAABQFIAAABqmQFsVkg1BUSNhSfN8WH9C5NSpAnRa-fRlOYQj_X0Td6JtfJSLAqAaFA-8UEyljh64MFe1IpceTWBJZYJnSEgGq7yzSHAio6wUJgXJVwx4fbcxvlLfaSEer_w-ju__tALoKsPpV9tl46ENwvIVkMm2o7AoH638VsVAFYAZY6xBq35i_LsogoBXqcV4UH5-xzfVioJN4cvKR-De6-y9PSgXxTaaV_9IUjHpyzqhfSrNYaxBWIuub56lQsE2s6vNDID9fXuRremQFeFwlsLNZb9RXr4TQhS6_4ydPKOyay4dVLqeuPcuPJDC0Vekoizm63QTT8RRbeCNVRVCAYPqzi4LjKnYvem8tP_KfUkcfLFA5dAQlK0KKjt9pE7x53_XdPxegM9eultAJ4YRENwxjr_bxRTsqGPeYUckC1K5v1c8I7zoiG_khv3N0CBH57GgqIxa_zy8j1UO4wrtA74jzENhbxL-hsBwH2uu2Z6VxYbnQ
I would buy the new cells from hybrid automotive then find sombody on this forum that lives near you to use their prolong charger.

 

welcome!
you can play whack a mole with replacement cells for as long as you don't have the money, but do have the time and patience to keep taking the battery out, repairing it and putting it back in.
the more you do it, the better and quicker you get at it.

be careful, that's deadly voltage!

all the best

 

One more thing...Youtube will be your best friend with videos of the Torque app, and how to handle it,and thr battery problems.

 

Yes... But buying a good used module online can be a hassle. First one I bought went bad after 8 miles... That was a really, really sad day. I've always been impressed with this person's module: 2ndlifebattery on eBay They always show up super strong & hot!

It'll be good to have a module on hand when you get to work on it. Of course if you drive it around too much with warning lights you can do way more damage. And swapping out a module is a far cry from repaired for a long time because for best results the remaining modules need to be reconditioned, charged & balanced, which usually gives you enough info to detect the next modules likely to fail and remove those ones sooner rather than later when your car finds out and ruins your day with the red triangle of death.

But if you wanna do it all quick and dirty like and just clean the corrosion and replace a module and then do more work later when you have more money and more down time on the vehicle you can give it a shot. Then when you get to that point come back to this thread and we can walk you through your best options for testing/reconditioning being more thorough/successful.

In the meantime, have you done all the obvious stuff first: 1) read & research error codes logged when the check engine lights came on. 2) disconnect 12v battery, which will clear the codes to see if they come back, 3) check 12v battery health, 4) make sure battery pack cooling fan is not clogged, 5) Use Bluetooth OBD2 reader (Hybrid battery diagnostic and repair tool for Toyota and Lexus) and Hybrid Assistant app to run cooling fan at full speed to keep pack extra cool while you're working thru repairs, 6) Use Dr Prius app to read Hybrid battery pack subcodes, or Toyota Techstream is even better: Mini VCI J2534 OBD2 Diagnostic Tool Code Reader for Lexus Toyota Techstream New | eBay

There's way too much to explain really... This is just the start to the conversation...

 

#1 listen to this man. He has done this before with success.
#2 read this thread. I don’t understand how this is not a sticky.
Gen II Prius Individual Battery Module Replacement | PriusChat

 

And I have to ask, driving for Uber in Longmont how much do you drive when the brew houses shut down (2am)? I have been around there when the bars close, the cops are hard core. Oskar Blues is the bomb. I had never seen an Indian motorcycle in my life before I went there for Sunday brunch. There were 4 there. Pre war BMW,s, pre war Harley’s. Place was like motorcycle Disneyland.