Lithium Ion replacmenet battery and OEM battery weight?

[Z8DinanS2]

Does anyone know the weight of the OEM battery? I've been researching these Lithium ion batteries LIFEPO4 and purchased several: 1800 CCA and 62 AH. They have full BMS (Battery Management system) and feature digital voltage and amount of charge display. They also have a power reserve function so that if the main battery goes dead for lack of use there is a power reserve to start the car. Weight of this powerful battery is just 21 pounds. The next size down is only 17 pounds.

I just found the answer: The Odessy ODP-AGM49H8L5 battery for the Z8 weighs 65 pounds and puts out 950 CCA. These Li batteries I'm developing put out 1500 or 1800 CCA and weigh 17 or 21 pounds and feature built in BMS and onboard digital displays of voltage and percent of power remaining. Weight savings is 44 - 48 pounds! And these are a fraction of the Antigravity batteries cost and I think they are as good if not better than the Antigravity batteries.

So far I am super happy with the batteries. Before putting it in the Z8 I used it to start an old E-type that had been sitting forever. Took a week to get it to start and cranked the engine over countless times. After all that power was still at 86%!

I had long ago replaced the battery in my Z8 with a smaller/lighter battery but that battery still weighs around 45 pounds and is only rated at 650 CCA. I had to replace the battery after just four years as I don't keep it on a trickle charger.

I was wondering if anyone can weigh their OEM battery as I am curious to see how much weight is reduced by using this Li battery.

Other great feature is that these Li batteries last three times as long as lead-acid batteries.

I've also learned the lead acid batteries have no BMS so when they go dead the battery is actually damaged and its capacity is typically reduced.....a real problem for cars that may sit for a while without a trickle charger.

The other thing I did not know is that most lead batteries are made from recycled lead and I am told this lead is not as potent as the original lead. In other words, today's lead batteries are not as potent, pound for pound, as yesteryear's batteries.

I'm going to put these in all of my cars. The other nice thing is I won't pull my back out lowering this down into places like the Z8 battery spot or worse, the Ferrari 308/328. Maybe it my imagination, but the 308 steered easier as the yellow top battery that was in their weighed a ton and I replaced it with the 16 pound Li battery.

The Ferrari 355 has the battery in a really not so great spot.....inside the passenger side front bumper area. When I replaced that battery I immediately noticed the front end does not bottom out as much thanks to a lot less weight in the nose.

If anyone has that weight information I would appreciate it. I've struck a deal to import these so I'm using them myself to see just how good they are.

[macfly]

I'm totally intrigued by this, I know a couple of folks have used the Odyssey brand, which brand are you favoring?

On the weight, I honestly don't know and no longer have a Z8, but by memory I'd guess around 30lbs as it's both a large and heavy unit.

[Z8DinanS2]

I'm totally intrigued by this, I know a couple of folks have used the Odyssey brand, which brand are you favoring?

On the weight, I honestly don't know and no longer have a Z8, but by memory I'd guess around 30lbs as it's both a large and heavy unit.

Hi Andrew

The Z8 battery, I'd guess is probably more like 60-65 pounds.

From what I've seen, these batteries are better IMO than the Odyssey. I've been working with a company in China, where all lithium batteries are made, so I wanted certain features: Ability to check battery level and voltage with a button and a power reserve so where a battery goes dead the car still starts up.

The other thing is long term durability, particularly with cars not driven every day, like sports cars and collector cars (e.g., the Z8) and the Li batteries apparently last for nearly three times as long as a lead acid battery thanks to the properties of the Li and the BMS (battery management system) which prevents the battery from going dead the way a lead acid battery can go dead.

[beamon]

Do you know if they Can be trickle charged the same way using a CTEK charger over winter?

[Z8DinanS2]

Yes and no. The CTEK I believe is also a battery restorer and as such it works differently as the Li does not need this restorative process. I'm working on sourcing a good trickle charger

[Musta10000]

I recall reading on the Rennlist about Antigravity (brand) Lithium batteries that some Porsche enthusiasts have bought or are considering to buy. I believe one negative is their performance level dropping significantly in cold (which may not be an issue for many Z8 users), but something to be aware nevertheless.

[Z8DinanS2]

I recall reading on the Rennlist about Antigravity (brand) Lithium batteries that some Porsche enthusiasts have bought or are considering to buy. I believe one negative is their performance level dropping significantly in cold (which may not be an issue for many Z8 users), but something to be aware nevertheless.

Unlike lead acid batteries, which have no onboard computer monitoring systems, the Li batteries have a BMS system (Battery Management System). They typically, at around 25 or so degrees Fahrenheit, will prevent the battery from charging to protect the battery. What is really interesting is that the Li battery will not only still put out power at low temps, but far more so than a comparable Lead Acid battery. This is because the Lead battery is actually far more affected by the cold than the lithium battery, as shown by the chart below.

So the numbers show a car with Li battery in cold weather would be far more likely to start than a lead battery. It just won't recharge below a certain temperature in order to protect the battery. Of course, simply warming the battery/area will cause the temp to rise enough to charge the Li battery and battery blankets specifically for Li batteries are available.

[macfly]

This is something I'd love to put in my F350 truck, that's a significant weight saving with 2 batteries.

[Z8DinanS2]

This is something I'd love to put in my F350 truck, that's a significant weight saving with 2 batteries.

Do you know what size batteries are in the F350 now? Generally speaking two batteries depending on size would be around 90 lbs to 130 pounds. Which could easily be dropped to 34-44 pounds with lithium batteries.

[macfly]

My truck is actually in production this week, but as soon as I get it I'll give you the full deets.

[Z8DinanS2]

My truck is actually in production this week, but as soon as I get it I'll give you the full deets.

Congrats! Yes, I'd be curious to see how heavy the batteries really are.

[Z8DinanS2]

Interesting consequence of reduced weight. my E89 Z4 has the battery in the same place as the Z8. I've put wider wheels and tires on the Z4 (as I've upgraded to the Alpina wheels on my Z8). Now, in the soft suspension setting, if I hit a good size undulation, the rear tires on suspension compression will just kiss (rub) the inner area of the fender. But with the lighter Lithium ion battery over the same bumps there was no tire rubbing! I also noticed steering the 308 Ferrari was easier with the much lighter Lithium ion battery. I am really loving these things!