Exige V6 Dry Cell Battery Recommendation

[Edison Ngu]

HELP!

My acid battery is dead, any one changed to dry cell battery?

Thanks!

 

[alias23]

Expensive but with the added benefit of 15kg weight saving if you've got the money you can always justify it

http://komo-tec.com/Shop/en/Exige/MK3-Toyota-V6/Car-electric/Lightweight-battery-Exige-S-V6.html

[Bibs]

[LF1]

i just spat out some tea.

[Edison Ngu]

1 hour ago, alias23 said:

Expensive but with the added benefit of 15kg weight saving if you've got the money you can always justify it

http://komo-tec.com/Shop/en/Exige/MK3-Toyota-V6/Car-electric/Lightweight-battery-Exige-S-V6.html

[Edison Ngu]

Considering Varta E44 Silver.

Any thought on this battery?

[Randy]

I've been using a lithium one from 'Super B'.  Not cheap but mega light and has been very reliable so far, I can price one for you if you like - it was about 1/3rd the price of that braille one IIRC.

[The Pits]

I'd be interested in one too. It's a job to find one that's man enough for the V6.

[alias23]

I'd also be interested if its meaty enough and has a significant weight saving

[French Frie]

the very same battery offered by Komo-Tec is available directly from Braille, in the UK, here : 

http://www.braillebattery.co.uk/index.php/braille/product_batteries/gu1r

you still have to make a bracket though, or maybe the bracket from Braille (£78) can be adapted ...

HTH

[Randy]

13 hours ago, The Pits said:

I'd be interested in one too. It's a job to find one that's man enough for the V6.

The Lipo batteries tend to have way better cranking current that lead acids.  I use pretty much the smallest Super B and its way better than any other battery I've used for winging the engine over.  What is hard is comparing data sheets and getting something like for like as the way the specs are written on Lipo batteries is very different.  If I get a spare ten minutes I'll whip the battery of my race car and try it on the V6 here and see if it does the job.

[French Frie]

it seems that a specific charger has to be used : 

" Braille lithium batteries are 100% compatible with standard charging systems. The only reason that our lithium charger is required (when charging externally) is due to several reasons, most due to the inadequacy of lead battery chargers. Lead chargers typically put out a voltage in the low-mid 13 volt range at a pulse rate (cannot take constant current or they will cook a lead battery). Lithium chargers put out 14.4 volts at a constant rate, as they charge 5 times faster than lead. Additionally, a lead charger (if used on a lithium battery, which is NOT recommended) would only charge it to roughly 50-60% state of charge and some have a desulfation mode to knock the crud off of the lead plates, which can potentially damage lithium since it doesn’t have any lead in it. A lithium charger put out roughly the same voltage as most alternators and anything at 14 volts will keep the battery at 98% state of charge. 

Many lower end lithium battery require special chargers or electronics to balance cells depending on quality, cell type, cell chemistry, etc.. This is a condition that does not exist with Braille lithium, as the construction and cell type/quality does not need any sort of external balancing and does that itself. 

An overcharging situation would be where a charger or alternator failed and the output voltage exceeded the tolerance of the battery. Braille lithium can handle up to 14.8 volts sustained and would take a long charge of 16 volts are higher to cause damage to the battery. So, if the charging system is putting out 14 -14.5 volts the battery will be happy running like that for a decade or longer!"

[alias23]

On 11/24/2015 at 09:02, Randy said:

The Lipo batteries tend to have way better cranking current that lead acids.  I use pretty much the smallest Super B and its way better than any other battery I've used for winging the engine over.  What is hard is comparing data sheets and getting something like for like as the way the specs are written on Lipo batteries is very different.  If I get a spare ten minutes I'll whip the battery of my race car and try it on the V6 here and see if it does the job.

 

@Randy did you ever manage to test this? Assuming it worked can you confirm the battery spec and what you use as a tickle charger? Thanks in advance.

[Arun_D]

48 minutes ago, alias23 said:

can you confirm the battery spec and what you use as a tickle charger? Thanks in advance.

Whatever you're into, Imran.

[550superfast]

did anyone fit one of these? any feedback?

[Chrisc]

I would be interested as well, as 15kg is quite a bit!

going to look into what makes the cup so light, and have a look at weight loss! 

[Yellow Peril]

You could look at Odyssey - depends on the size/power you want/need but could be well under 15Kg

http://www.mdsbattery.co.uk/departments/department003.asp?DepartmentID=248&DepartmentName2=Odyssey+Extreme+Racing+Batteries

 

[Seriouslylotus]

On ‎02‎/‎09‎/‎2016 at 21:14, 550superfast said:

did anyone fit one of these? any feedback?

Just about to fit a braille.......In the process of sorting a nice / correct bracket, will update when im done

[alias23]

Now you have the 360Cup I'm so eager to see all these new developments start to hit the market!

[NW76]

Does anybody knows the weight  of the battery in the V6 CR? just trying to understand how much more potential I have there ...

[Seriouslylotus]

17.4 Kgs if it uses the same battery as a cup car and the mounting bracket is another 1.5 Kgs!!!

[550superfast]

Wow, so looking at a 14-15KG weigh saving? Will you be able to supply new Braille battery and bracket Dave?

[NW76]

I think its a different one ... I had it out recently ... I guess maybe 7-8 kg ... if you google the weight savings on the CR vs the S one of the main drivers Lotus mentions is a lightweight battery ... whatever that means ...

[Seriouslylotus]

50 minutes ago, 550superfast said:

Wow, so looking at a 14-15KG weigh saving? Will you be able to supply new Braille battery and bracket Dave?

Cannot answer that on here sorry, not an advertiser.... All the posts I make are the things I have learnt or am doing on my own car and im just trying to help like minded souls......

[Bibs]

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