Battery failure

[stani]

It is a bitter irony paradox that although the Jazz provides information and warnings about all sorts of things, it says nothing about this very important issue — the impending failure of the 12-volt battery…

[Jazzik]

the impending failure of the 12-volt battery…

As long as it remains merely a threat of a failure, your Jazz always starts without any problem, right? That's why I wondered who has actually fallen victim to this (alleged?) 12-volt battery problem.

[exAudi]

It happened to me just after getting car when I was exploring/setting up the audio and other features with the power by accessory option; car in garage.

Complete ignorance on my part as to how limited the 12V battery was in comparison to all my previous ice cars😖

I had to put the battery on charge (via existing CTEK) in order to resume normal operation😀.

Already discovered clubjazz so absorbed lots of useful advice on the subject.

Subsequently fitted a battery voltage indicator (decided on relatively expensive Ansmann one as have their excellent 1.5V/9V cell chargers) which simply plugs into car 12V socket. It gives good indication of state of 12V battery when I first power up and confirms charging when  engine/HV battery running.

Most recently I have got myself a NOCO GB20 to give back up when out and about.

[5thcivic]

3 Civics, a Jazz and an E, never needed one yet!

[stani]

I was also looking for information about possibly replacing the 12v battery in the Jazz.

If the information is correct, it's not very happy...

The Honda Jazz uses the Japanese B19R format, not the European LN0.

The B19R has the opposite polarity (right +), does not fit the height of the holder, does not fit the shape of the foot, compared to the LN0.

The only supposedly correct battery for the Jazz allegedly is: GS Yuasa YBXAGM35R (B19R, AGM, right +)

[coldstart]

the impending failure of the 12-volt battery…

As long as it remains merely a threat of a failure, your Jazz always starts without any problem, right? That's why I wondered who has actually fallen victim to this (alleged?) 12-volt battery problem.

Well, I do insure against all kinds of things that (hopefully!) will never affect me!
So, in the big picture of total costs, the expense for a CTEK and a NOCO GB20 doesn't bring me to ruin.
However, it gives me peace of mind!

Whilst I (so far) never had to use the NOCO jump starter I admit to periodically hook up the Jazz to the CTEK charger during the cold season (shorter and less frequent rides with more power drawing accessories active like heated seats, heated steering wheel and rear demister).

[JB]

Two came up at Yuasa only posted to show fitting time top right.
https://www.yuasa.com/uk/ybx5054
https://www.yuasa.com/uk/ybx7054
£59 difference between the two.

[stani]

I read about a similar problem with a 12V battery on the Czech Honda forum 3 years ago, it was about the HRV (here and here - it is translated into English). I only remembered it now.

[5thcivic]

Bosch S4018 ?

[stani]

Two came up at Yuasa only posted to show fitting time top right.
https://www.yuasa.com/uk/ybx5054
https://www.yuasa.com/uk/ybx7054
£59 difference between the two.

Copilot: Both are classic flooded lead-acid batteries (SLI), not AGM, and they are not in the B19R format that the Jazz 2025 requires.

Bosch S4018 ?

   Isn't it AGM? AGM is very important...

[John Ratsey]

My 2022 HR-V had a flat battery due to a bug in the perimeter control system (the vehicle didn't power down properly when locked) but my 2020 Crosstar and the current Jazz have behaved themselves despite not moving for a month or more during the winter months. However if the vehicle does move, it's for a decent journey.