Suitable battery for TR's

[Lebro]

I know this has been discussed many times before, but as I was in need of a new battery for my '3 (the old one was 10 years old, & dying)

I did a quick bit of research both on here, & generally on the internet. I came to the conclusion that the 096 battery was as good as any, & I found one for a good price considering it has a 4 year guarantee.  They come in two flavours - 096 which has the +ve terminal on the right front edge, and the 096R which has the terminals reversed.  I have purchased the latter, as it suits my car, having a battery cutoff switch on the +ve side, located under the glove box (RHD) normally the 096 would be correct.

https://www.tayna.co.uk/car-batteries/powerline/096r/?gclid=CjwKCAiAu5agBhBzEiwAdiR5tCO6SoEKH8N6GMwTker3nLkIeuUJkZkyLgwLmLAy4mX2mxR2S7WRTBoCngcQAvD_BwE

Is where I got it from.

    

Useful site here, unfortunately does not give terminal orientation.

https://www.puretyre.co.uk/car-battery-specification-chart/

Bob

Edited March 6, 2023 by Lebro

[Don H.]

Battery sizes can get really confusing.  The different continents use different systems.  Europe different from USA and both different from Japan.  Ugh.

Here in America we mostly use BCI group sizes (Battery Council International). 
https://www.jegs.com/Sizecharts/bcigroup.html

Even within those groups, terminal orientation isn't automatic.  Most of the time it's with a letter appended to the group number, but even that isn't intuitive.  My Toyota pickups, for example, have group 27F batteries.  Originally, AFAIK, "F" referred to "Ford", who first used that orientation.  Other letters are used sometimes too.

In my TR3B, I run a group 27 battery (307mm L x 173mm W x 225mm H) inside an original AMCO battery tray liner.  That's about the largest one that will fit and generally the same as the originals fitted over here.

 

[Drewmotty]

I fitted an 096 AGM battery as our Tiguan needed a new one (AGM for stop/start) and only two weeks later it got traded in so the old one went back in and the new one in the TR. Seems to do the job so far :-)

Edited March 6, 2023 by Drewmotty

[RobH]

 

9 minutes ago, Drewmotty said:

Seems to do the job so far :-)

A standard TR alternator will not fully charge an AGM battery as the charging voltage required is different from that of a conventional flooded battery.  AGM needs 14.6 to 14.8 volts which is a bit more than the standard alternator will provide.  The battery will probably still work but will never reach full capacity unless a separate charger is used to top it off.  

https://www.alpha-batteries.co.uk/blog/a-detailed-guide-to-agm-batteries/

[Ian Vincent]

I use an 068 Yuasa which as far as I can tell is a smidgen smaller than Bob’s 096 size but very similar output. My battery terminals are the opposite way to Bob’s with the live on the offside of a RHD car which gives a shorter run to the starter motor, (in a negative earth vehicle).

Rgds Ian

[pinky]

On 3/6/2023 at 5:54 PM, RobH said:

 

A standard TR alternator will not fully charge an AGM battery as the charging voltage required is different from that of a conventional flooded battery.  AGM needs 14.6 to 14.8 volts which is a bit more than the standard alternator will provide.  The battery will probably still work but will never reach full capacity unless a separate charger is used to top it off.  

https://www.alpha-batteries.co.uk/blog/a-detailed-guide-to-agm-batteries/

That's interesting, is that a problem 

Cheers pink 

[Steves_TR6]

Its a good point.

calcium batteries also have a requirement for higher charge voltage, 14.7v

 my car was fitted with one in 2012 when i bought it and that’s still going strong!

steve

[RobH]

1 hour ago, pinky said:

That's interesting, is that a problem 

Not really Pink, it's just that you will never reach the full capacity of the battery (e.g. if it is nominally 36A there may only be 28Ah available) and its overall life might be shortened.  If you are in the habit of using a smart 'battery conditioner" then it isn't a problem because the conditioner will get the battery to full charge anyway. 

Car batteries are not deep-discharge-cycle devices. They are designed to spend most of the time fully charged, with only the occasional brief dip to about 2/3 charge when starting the car from cold, and which is made up again very quickly.  

 

 

Edited March 8, 2023 by RobH

[Steve-B]

Am I correct in that a 096R is right for a TR-6 https://www.tayna.co.uk/car-batteries/powerline/096r/?

I'm wondering as I thought I had to have a battery with a CCA of 650A minimum?

[DRD]

43 minutes ago, Steve-B said:

Am I correct in that a 096R is right for a TR-6 https://www.tayna.co.uk/car-batteries/powerline/096r/?

I'm wondering as I thought I had to have a battery with a CCA of 650A minimum?

I thought the correct size was either a 69 or 72 battery?