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Battery Spec
nickm - 21/7/15 at 07:24 PM

Hi
Iam after some advice with ref to a new battery
The car is a Sylva J15 so space/size is an issue i got the now dead exide 063 out only because its on ramps !
The engine is a 1600 sigma running on injection with an aftermarket ecu, no heater/wipers or luxury items but normal road use so what do you reckon would be the minimum AH and cold cranking that i would need ?

Thanks

Nick M

britishtrident - 21/7/15 at 07:46 PM

quote:
Originally posted by nickm
Hi
Iam after some advice with ref to a new battery
The car is a Sylva J15 so space/size is an issue i got the now dead exide 063 out only because its on ramps !
The engine is a 1600 sigma running on injection with an aftermarket ecu, no heater/wipers or luxury items but normal road use so what do you reckon would be the minimum AH and cold cranking that i would need ?

Thanks

Nick M


Cold cranking amps shouldn't be major hurdle with with a modern engine and starter for summer use, the required amps hours rating depends a lot on the way you use the car. The smaller the battery capacity the more you have to make sure the battery is always kept fully changed if you want it to last.
I don't know the shape and size of your space but you could look at the old type 038 battery used in many smaller classic British cars or the batteries used small Japanese van like the Bedford Rascal.

The Tayna batteries site is a good source of info.

[Edited on 21/7/15 by britishtrident]

JAG - 22/7/15 at 10:20 AM

I killed a couple of standard lead acid batteries in my Locost simply through lack of use.

I eventually replaced the battery with an Odyssey PC680 and I've never had any trouble since. It's reasonably compact and can be mounted in almost any orientation (not up-side-down!). The only downside is the cost at around £90.

It's about 200 x 200 x 80mm.




It runs a fairly standard Locost with MX-5 fuel injected engine, lights, instruments, wipers etc...

[Edited on 22/7/15 by JAG]

coozer - 22/7/15 at 01:35 PM

Had a look at the Lithium ion batterys? Very light, both on the car and on your wallet! But, if they last as long as the Red Top 25 I used on my car should be a good investment.

http://www.skyrichbattery.com/Lithium-Ion-Battery/c10/index.html?osCsid=jntok5foj1tfgaf5nfkq3g7m64

nickm - 22/7/15 at 07:11 PM

Thanks for the replies

The dead exide was L-195mm W-170mm H-180mm and the quick connectors i have can just go on. I have found some smaller size Yuasa on a website with 20 AH and 330 CCA. To be fair to exide i bought it just to start the engine knowing that i would probably destroy it from lack of use by the time the car was finished.
As the battery needs to be replaced and the build is nearly complete id rather not change cables etc for an Odyssey type although it would help in the sub 500kg target i have set !
Do you reckon a 20AH and 330 CCA would do it ?

Ta

Nick M

russbost - 23/7/15 at 08:05 AM

If you're considering Li Ion then I wouldn't have thought buying from the States was a particularly good idea - for a start what happens if you have a warranty issue?
Our range of Li Ion Link Here we can always do 5% off for LCB, just give us a ring - approx equivalent to the PC680 is the Lipo 12C, or for something with a little more power the 10A, around 6kg weight saving over a PC 680 & a lot more weight saving over an 063 or anything like that