HELP! Prius 2010 does not start with a new aux battery

Well, while I admit their parts prices have been somewhat pricey and my last sway bar end links purchase for my friend's Mercedes were wacky, (one side Al the other side steel), they are good overall esp customer service. (See 5 yr stock chart attached).

REVVL V+ 5G ?

 

No need to apologize please. Things happen. AutoZone claims to be the #1 seller of batteries. Their stores are all over the place. If you have a dead battery it is likely you could walk over to one of their stores which makes it convenient/aka a life saver. I like it that they checked the replacement battery before they let you leave with it....

@ASRDogman While some Chinese made stuff are bad quality, some are good. Unfortunately politically they are making me nervous, which I hope won't make me regret supporting their economy buying their products. (Been spending a lot of money on Taiwanese computer networking products lately. Is that Chinese? China says so, Taiwan begs to differ)...

REVVL V+ 5G ?

 

VERY few things made in china are good. Depends on the manufacture. Like Apple.
They tell them what quality of stuff to use. But most others say do it the cheapest way.
Of course china says you have to give up your secrets so they can copy what you designed.
And they do it cheaper with inferior parts.
Taiwan in NOT part of china. At least not yet. When china attacks Taiwan, they will go down hill.

 

You still haven't said how much/long you drive....
And have you check for an excessive draw with the car off?

 

That typically entails placing a multimeter in amperage mode in series between negative battery post and ground, with the car off and “asleep” (all doors closed, fobs well away, untouched for say half an hour).

doing this test myself I saw ~20 milliamperes with regular spikes to ~45, the latter maybe due to the in-dash security icon.

 

Things can change in a year.
But, the "short trips" is what kills the Prius AGM battery.
Every month or so you should put your charger on it for a few hours to "top it off".
If you do that, the battery will likely last more than a few years.

 

If you have the wherewithal, say a garage with AC outlets, use a smart charger, and just leave it on all the time.

We're doing about 3k kms a year now (not a typo), and that's what I'm doing. Whenever the car's driven, the next day the charger goes on, and stays on, till the next usage. I put in an Optima Yellow Top* in September of 2015, still load-testing like new.

* Apparently not the best battery for a Prius, with high CCA and low Amp Hours, but it's worked out well with the above regimen.

 

No, you won't. You can charge it through the connector in the fuse box under the hood.

 

Mechanics assume everyone has tools and skills; homeowners assume everyone has a garage or driveway.

In the future buy a Toyota AGM and you might get better results.

Not sure I would worry about a car driven 10k miles a year especially one without symptoms UNLESS you often don’t drive the car for one or two weeks at a time. Most of us never separately charge our 12v.

Instead I would get a lithium jump pack and charge it once a year.

 

??? No tools needed to put a charger on a battery.
Most people park their cars by their house.

Since all the posts about charging the battery, no one said anything about NOT having
an outlet to plug the charger into, until the last post.....

I never assume. I make comments on the info I have available at the time.
Not my fault other assume.

 

Hello Mendel, this is unrelated to this post. For some reason I am not able to private message you, but I have a question. Can you message me? Thank you for your time.

 

Get one of these portable power-station

https://a.co/d/0W1zjDk