Battery failure

[Jazzik]

I hope there isn't going to be an outbreak of some kind of "Toyota 12v battery panic illness" here?

My two questions were:
1. Who among you has ever been unable to start the Jazz due to a dead 12-volt battery?
2. Was the battery perhaps discharged due to your own fault then? (Meaning: fumbling around with electricity consumers without having te car in "ready"?)

[exAudi]

Yes Stani that’s the Ansmann that I have permanently plugged in to the 12V socket. Not as if I use the 12V for anything else.

As regards accuracy, I have checked it against my Martindale meter and it’s correct to 2nd decimal.

Hopd this helps.

[5thcivic]

Please don't rely on AI answers for your facts. Many many electronic, camera, hi-fi, and other technical questions I put into google for instance the first paragraph is more often wrong than right.

[JB]

Original battery Panasonic £177-38
https://www.honda-parts.eu/eu/car/parts/battery/battery-44b19l-31500-tzb-e01
https://www.bike-parts-honda.com/honda-motorcycle/assignment_spare_parts/31500TZBE03
£79 more than Yuasa heavy duty, £89 more than standard Yuasa
https://www.yuasa.com/uk/ybx3202
https://www.yuasa.com/uk/ybx5202

[zdan]

10 extra quid for the yuasa heavy duty 5y warranty (5000 series) that sounds good.

I'm still running the original 12v battery and 55k miles (September 2020). I wonder if I shall I change it now or wait till it stops working.

It read 12.45v the next morning before I started the car.

[coldstart]

It read 12.45v the next morning before I started the car.

According to this source your battery is at 70 to 80% charged (sealed gel technology).

As for battery technology: The Jazz's 12V battery doesn't have to actually crank the ICE, so buying an AGM replacement seems to me somewhat over the top and a waste of money.

[Nollypra]

Is this battery problem ever going to be sorted, the Yaris has the same problem. Just putting a normal battery in the car might help. An ICE car can sit in the garage for ten years and still start. Isn't there a way to use the EV battery start the car when the 12v battery fails, I think there is a car that can do this, can't remember the model.

No chance a modern car will start after being in a garage for 10 years! That's absolutely rediculous!!

[Lord Voltermore]

GSF car parts  show the Yuasa YXB 5054 as compatible with the  mk4  Jazz HEV . £65.09  ( which may include delivery)

https://www.gsfcarparts.com/products/ybx5000-silver-high-performance-smf-battery-5-year-warranty-za042670

https://www.yuasa.com/uk/ybx5054

At first glance  this does  seem a closer match  in physical size than the YBX3202   or YBX5202.   

However  the Yuasa site shows it as being ca/ca -ie calcium terminals.   Although this has many advantages  I believe  calcium batteries are more vulnerable to permanent damage if  allowed to deeply discharge   more than 3-4 times. And also need a compatible trickle charger to charge them above  80%.   (Good smart chargers are compatible)  . 

The specification given by Honda for the  44b19L  makes no mention of it being calcium.  But is this just an omission and the battery is in fact Calcium type, which might explain why some people have had problems?   But as the Panasonic/yuasa  44b19L appears to be exclusive to  Honda models  maybe its specifically avoids calcium   to avoid this problem .  If  so its not been completely successful   

I have no figures to back it up but have the impression that early Mk 4's ,which used a different brand of OE battery  ,seemed to be more vulnerable  than later cars with Panasonic batteries. Even when they too were quite new.   So maybe they were improved.          But is this enough of an advantage to pay £177 for a replacement?  I think I would  take my chances with a £65 one rather than pay £177     But might regret doing so if  it leaves me stranded    )