Noise when force charging, also Overcharging battery? GEN 4

Hello!! So I have been monitoring the battery past 2 days watching the SOC and such since the car has 64k miles on it and i drive it over 120 miles a day.

I decided since it sat at a dealership for 2 to 3 weeks I'd give it a force charge to run the battery to a full charge. So engine warmed up, held brake down and gas down and the engine made an awful rattling noise, does it everytime I force charge it, however it doesnt make it in any under circumstance.

That's problem 1, problem 2 is the SOC and the battery gauge.

The car shows like 50 to 63% charged on bar 5, bar 6 shows 65 to 80% then bar 7 shows up to like 90% then bar 8 will be on from like 90% to 106%. I'm concerned that the gauge is not reading properly and not only that I'm concerned the car allows it to overcharge very easily.

It also let's the battery go down to like 30% and shows 2 bars, sometimes 1 bar. My understanding was the battery operated between 40 and 80%... and max voltage is 207 volts. It let's it get higher, if I'm not mistaken like 215 or so and as low as 193 to 195... I can relook at voltages but it does worry me. Thanks!!!

 

Oops well, theres that lol. I was monitoring it through the OBD II through the dr prius app so it worried me lol. Now my next concern is that rattling noise. >.< worries me lol I came from a 1st gen insight so I was use to grid charging 100% to balance the cells every 3 to 6 months. I understand it used a different chemistry however it was super reliable, 1st prius ive had which I've read on their reliability but still nervous lol considering it's my 1st major car purchase

 

I was in drive, I did it because that is what is said to be done on the Dr prius app to test the battery, and I was wanting to do a forced charge because of my previous car to force charge the battery to 100% to balance the cells since it had sat for alittle bit at the dealership. I feel if it wasnt meant to happen there would be a system to keep it from doing that, however it doesnt stop you and creates a force charge situation. Regardless there is a rattle. (Hopefully this reply will be approved before other replies come in assuming because I'm new lol)

 

Well wont do that again lol. But I would like a way to keep the cells balanced. Trying to make it last as long as possible

 

Awesome. I didnt know if there was a grid charger available for the 2016 n up with the new lithium packs... I mainly downloaded dr prius to see if the battery was healthy and functioning the way it should before the 100k warranty runs out. I guess the rattling noise probably is nothing to worry about lol just no force charging anymore haha

 

I was expecting the pack to last right at the 100k or might last to 150k. Unfortunately I live in Tennessee and I drive 40k miles a year so I wanted to make the pack last upwards of 250k to 300k. So 40k times 5 years is 200k miles plus the 64k it has now. I mean if it doesnt last 5 years no biggie, just wanted to prolong the cars life.

I've loved it so far n getting about 55 to 75mpg depending how n where I drive it. On the way to work normally 65 to 75 mpg, back home 52 to 60mpg. N average seems to be right at 60 because sometimes I just dont care n drive it normal ‍♂️

 

well the hills hurt mpg, the weather is bipolar, and I dont get the long warranty lol. Which that's not just this state so, oh well. But Tennessee it is.

Does anyone think it's something of concern on the rattling noise? Even though it's something not happening unless I do that (in drive, hold brake and gas), I still feel rattling like hell shouldn't be normal under any condition should it? I'm right past the 60k warranty on the engine, if it is the transmission (transaxle?) Or components inside, would it be covered?

 

I dont think the tire pressures are set high. Their whatever the dealership I got them from set it at. I can check when I get home if this rain has passed. But I think I would of had to of been moving for that to make noise. I sitting still when performing the force Charge (which I wont do again lol)