prius C battery cell test question

hello guys this is my first post in priuschat, I am happy that I found this community of knowledgeable people that always help

I have a prius C with the code P0A80 and P3000 I've been reading a lot (A LOT) and I would like to replace/repair the battery pack myself why ?? because looks that here in orlando Florida I can't find somebody with enough knowledge to perform the right job, my battery pack is a shop right now but I could see the "technician" had a iMAX B6 LCD RC Lipo NiMH Battery Balance Charger I got kind of disappointed because I thought maybe he had a more specialized equipment than the one I had in my mind, he said he is going to perform the job in a day, and I know a day is not enough to analyze a whole pack with rudimentary tools.

with that said I want to be prepared by the time I get the battery pack and repair/service myself , I did open the battery first before going to the technician to make sure he is going to clean all the contacts and connections I did also measured all the voltages( NO LOAD TEST JUST MULTIMITER) and I found something interesting.

7.42
7.35
7.23
7.15
7.09
7.03
6.98
6.95
6.86
6.75
6.45
6.34
6.30
6.28
6.22
6.19
6.12
6.26
6.37
6.59
6.78
6.95
7.12
7.23
7.28
7.31
7.36
7.40

why this voltages show this pattern of decreasing in the middle?? I don't want to assume that I have a whole bad battery module, I don't really know about this car since I bought it at the auction not running thanks for your help.

 

thanks Bisco I have considered it, but I bought the car on a low budget I tough replacing the auxiliary battery was going to fix the problem but I found the hard way now I have a prius C that I have to fix . thanks for the reply and the HEAT ANSWER is yes the fan was totally clogged. In the worst case scenario I will buy a pack I saw on car-parts for $650 2014 prius C 78k miles but I wish I could learn how to refurbish the pack myself for future prius I will buy, but the more I read the more confused I get hahaha I see the cheap iMAX B6 LCD RC is not a good option for charge discharge I should buy something more advance,maybe in the future if I get to learn from you guys I can try to fix prius for a living I really like this cars I've already owned 3 in the past year thanks again for replying my message.

 

thanks Leadfoot J. McCoalroller my problem is I saw the technician that is "repairing the pack" with a iMAX B6 LCD RC working module by module so I'm totally disappointed I though he had something more advance to discharge / charge the battery I'm now convinced he has very minimal knowledge about this, maybe he is going to swap modules from different models and he is not going to care the fact that the pack overheated, I'm totally convinced I want to buy a battery from a low miles prius and refurbish myself because unfortunately here in orlando florida I can't find somebody with the knowledge level like the members of the prius chat to repair it. also another factor is economy and I would love to learn in the process.

 

thanks for the great info.

 

I already got a conclusion I found out that the engine has a misfire or I have a bad piston rod caused by hydrolock at the end the previous owner sold the car because basically he tried to start the car numerous times to the point the traction battery completely died.

 

I did another video after I took apart sparks plugs, injectors, intake , cleaned throttle body , cleaned egr hoses and everything that could be cleaned( including the water on cylinder #1) put back together and this is the noise I got.

 

Thanks for the reply today I will keep you posted I am planing to open the engine for educational purposes for my surprise I opened the oil pan and no metal was found so you could be right I'll be repairing the head gasket issue I hope I can fix this car and put a lot of miles on it

 

thanks for the reply,now I think I found a new hobby I saw a post you talked about chargers and you have the ev peak cq3 but also recommended the hitech 44254 what do you think is a better option in the long run If I'm planning to rebuild the HV packs.

 

yes I think the noise is inside. I have a small toyota tacoma making the same noise and I've been told by many mechanics the problem is a rod bearing I am installing a new engine I hope this fixes the problem