Issues starting Prius in the cold

CTEK 4.3 (charger) has a desulfate option.

 

No, the conclusion that you have added a tiny bit to the battery's overall life is justified.
Any conclusion BEYOND that is not.

Any improvement you make will likely not last more than 6 months.
Once the sulfation occurs, that compound is NOT changeable back into anything usable for electricity production while it is inside the battery. NO amount of any kind of electricity applied externally will change that.

It should be pretty easy to research this, if you really care.
The difficult part is ignoring those who "bend" the truth to sell something.
And those who spout BS just to sound important.

 

Which will make the battery appear to magically regain some lost capacity.
But that is only short term and does NOTHING long term.

 

Your statements are falsifiable, and in my experience, false.

For non-technical reasons, I've had to interrupt this "project". The battery currently shows a fully charged/rested OCV around 12.6. I found an old school Schumacher BT-100 load tester. I haven't had the chance to test the Prius battery yet, but I expect what it will show is that the battery is mediocre (which is a lot better than it started out!). I'll test the battery at my next opportunity, document my findings. I want to run the Pulsetech charger on that battery for at least another 300 hours. Then I'll do another assessment. If it conforms to my prior experience, the battery will test quite well.

While the Prius hasn't been available, I discovered the flooded OEM battery in my 2013 Subaru was discharged. I put my old school 6 amp manual charger on it until it started gassing, then checked sp grav with my cheapo hydrometer. One out of four balls on all cells, electrolyte a little low but covering all plates. I added distilled water to correct level, put the Pulsetech on it. That was 12 days ago. I checked the sp gr last night and it floats 3/4.

 

All I can say is having to plug in a charger every few days for the rest of the battery's life is not nearly appealing as replacing the battery with a new one and not worry about it again for 5 to 7 years.

 

Depends. Our car regularly sits idle 2~3~4 days. Then the drive might be a short one. I've hooked up my CTEK charger's quick connect cable at the underhood jump point. The car's garage stored, and the charger is mounted on the wall beside the front driver's side fender. Hook up is quick, and I can leave the car unattended for days, without having to stress about the battery running down.

 

You've misunderstood what's happening here.

Once restored, the battery behaves like it did when new or at least much newer. It does not require unusual care.

The restoration process takes significant time. About 600 hours for a typical (group 35) auto battery. If the battery is in a car which is in service, then you do have to connect and disconnect, which is why the charging pigtail you can see in the video, which is easily accessible without removing any interior stuff.

Side note: The desulfation process uses a high frequency (20+ KHz) square wave superimposed on a 14.1VDC float charge. Getting that HF pulse into the battery requires minimizing capacitance, so the charger needs to be connected right to the battery terminals, not through the underhood charging point.

 

See post # 2, 3, 5 , 9 & 11. If not, we may not be able to help you.

 

The battery did NOT read 14.5; that is the voltage coming from the charging system.

Yes, it is a 12 V battery issue; it is worn out.

Please be sure that your new battery is fully charged before installing it.

 

I can't say all models of Optima batteries are reliable as a rock but speaking of my Optima Yellow Top 24R, it has been over 6 years now. It works 100%, no even a hiccup once. Perhaps like fotomoto's chart, I am at the great white north country with 58 months or more on its life expectancy. I did my research 6 years ago when I made the purchase and I would buy another one with no hesitation the next round.

 

Seems like I remember that the quality problem showed up about 4 years ago.
Don't know if it got resolved or not.
Glad you got a good one.

 

No, often they are NOT fully charged.
You tell by testing it.......or connecting a "smart" charger until it says the charging is done.

Depending on exactly what "store" you are dealing with, they should be able to charge it for you.