21 replies to this topic

[haggi961]

Most topics are old and pictures ect gone so was wondering what lightweight battery's people have fitted and how they have fitted and what has worked with running loads of gadgets through the car?. I'm looking to replace my battery for something smaller and lighter hopefully. I know a few are running the pc680 but the amp power is only 17 which worries me if running a lot of gadgets through the car.

[nspeedster]

I believe I made if not the best, one of the best choice . I choose Odyssey pc680 Low weight only 7 kilos 680 amp

[Tony H]

I put a shorai lithium one in my Elise 1.3kg!!! 10kg saving and About 1/3 size. Part no LFX21A6-BS12

[nspeedster]

There is ni problem with the gauges because I also have some,(don't forget my project that I run ), The only thing is that I have a battery charger after every ride I put it on the socket

[haggi961]

There is ni problem with the gauges because I also have some,(don't forget my project that I run ), The only thing is that I have a battery charger after every ride I put it on the socket

Mine also goes on trickle charge. Can the trickle charger be on while the battery is plugged into the car or do you have to disconnect the battery? Il be running a good sounds systems, digital dash with plugs in, gauges, tablet for the software, sat nabs,Iphone chargers, road camera that keeps recording even when the car is switched off but has a cut off point once the battery reaches a certain drain so was making sure it can cope with all this.

[haggi961]

I put a shorai lithium one in my Elise 1.3kg!!! 10kg saving and About 1/3 size. Part no LFX21A6-BS12

That does sound light but how much is it and what's the amp power? 😀

[Tony H]

I got mine off eBay £150 delivered. 330cca.

[haggi961]

I got mine off eBay £150 delivered. 330cca.

How was it for running the car with lots of gadgets and did you ever find out how long it last before it went dead? Any pictures of how you fitted it and making the terminals work?

[Tony H]

I don't have any stereo or anything it's a track car. I thought the alternator powers everything when engine on? I've heard if you have alarm and that it will keep about two weeks before it won't turn engine. Tom220 on here had a 900g one and lots of electric sh*t. Fitting was very easy in the Elise just unbolted the old terminals then fitted the cable to the posts that come with the battery.

[Zoobeef]

Once your running the altornator should do most of the work. Where it won't work is short journeys with repeated starting and being left for weeks without disconnecting it. So depends how your going to use the car, if you're going to use a charger and/or isolating it.

[nspeedster]

I have a cigarette charger,and yes the battery is on when I charge it

[Crunchie]

But, does it make any discernible difference, I mean....I'm usually the most geeky weight weenie but I'm struggling to think a few kilos on the front(lightest end) is going to improve things. I'd rather save weight over the rear to help weight distribution. Saving weight on the front will worsen weight distribution, so unless it leads to better acceleration, which I can't see, then surely its just an exercise in spending money and adding faff.

[nspeedster]

It is not only the weight always, it has also almost twice the life time

[manus]

Perhaps most efficient is to place the battery behind the passengers seat, thus reducing heavy copper cable length to the most power consuming starter engine, low and close to the center of gravity. Try the superB, expensive but only approx. 3.2 or 3.4kg (not sure as it was long time since I've weighted it)

[jonnyboy]

I don't have any stereo or anything it's a track car. I thought the alternator powers everything when engine on?  

This. Unless you are watching movies in a car park the alternator is in charge of the power. Small battery wlll need to be kept trickle charged to ensure enough cranking power. 

[Tony H]

If there is nothing draining it like alarm they reckon these lithium batteries will still crank after 12 months.

[GiGo]

When I got my NA it had a smaller lightweight battery in!  It drained on my first winter,after reading many horror stories about getting the battery out, I set to work, reached in and pulled it out, piece of p*ss  Wondered what the fuss was about until I got the new one and thought HOW F*UCK DOES THAT GO IN THERE!!!

 

Oh and mine was held in with Polystyrene! (i assume to keep down on weight!) 

Edited by GiGo, 17 August 2015 - 08:49 PM.

[haggi961]

Once your running the altornator should do most of the work. Where it won't work is short journeys with repeated starting and being left for weeks without disconnecting it. So depends how your going to use the car, if you're going to use a charger and/or isolating it.

It will only be going for good blast out so that should be fine and the rest of the time will be on trickle charge.

[haggi961]

But, does it make any discernible difference, I mean....I'm usually the most geeky weight weenie but I'm struggling to think a few kilos on the front(lightest end) is going to improve things. I'd rather save weight over the rear to help weight distribution. Saving weight on the front will worsen weight distribution, so unless it leads to better acceleration, which I can't see, then surely its just an exercise in spending money and adding faff.

The lotus s2 range from standard run there battery's in the rear with no problems so I think are cars should be fine. It's more about the size of the battery for me as its a pain in the back side the big 063 battery to get in and out.

[Nev]

I wouldn't get a small battery again. It was forever losing charge when parked up with alarm on. For example I couldn't even leave it a week with the alarm on, as it wouldn't start. I put a normal big battery in to replace it. A heavy battery in the front also improve handling/steering.

Edited by Nev, 18 August 2015 - 06:40 AM.