So, my 2005 just hit 294k miles, and its starting to really show its age. for the last few months the battery has been discharging extremely quickly and charging extremely slow. I had assumed maybe one of my battery cells was bad and i could just replace it, but to confirm i downloaded Torque Pro just to check the voltages of each block before i took the car apart. i had expected to see one block significantly lower than the rest(or at least a little lower). but after letting it run during my half hour drive to work, it reported fairly even numbers across the board. Does this mean i just need an entirely new battery instead of just replacing individual cells, or should i tear the whole thing apart and actually check the voltages of each cell individually, or could this be indicative of another issue entirely?
more than likely, or maybe there's a lot of corrosion. tech stream might give you a better diagnosis, but if you're keeping the car, why not spend the $1,600. for a brand new battery?
mostly because if the battery is still good, i'd rather wait on spending the $1,600. i dont want to end up with a new battery not being the fix until i know for sure. corrosion could definitely be a possibility with the age. should i just take it apart at this point and see what im dealing with. i should also note, there is no check engine light, and no red triangle at this point. and Torque did not find any pending codes
I had majaor amounts of corrosion on my copper bars- even the dorman reman battery w zinc plated bars has major corrosion on a few key areas and studs for the battery terminals/nuts.... and its under two years old. I blame a big part on climate..... I used some oxidation grease to see if it would keep away the major amounts on key areas.....and all lugs of course. I am also suspect if upgrading to gen3 cells would be worth it...…
Here is your problem. You're checking after they've been charged for 30 minutes. If you want to look for a difference in block voltages, it would be best to do it after the battery has sat unused, overnight, etc. That will give a bad cell/module plenty of time to self discharge/return to it's equilibrium state .
it was about the same when i checked it first thing, but i will do it again tomorrow morning to be sure
Possibly, but you may also be able to benefit from a full reconditioning cycle using the HA Prolong Charger/Discharger system. If you were able to borrow one for a week, plus buy your own harness cable, it could be worth a try.
