Antigravity Batteries for me specifically it's an 09 135i, no options bar park sensors, no cameras/accessories on whilst parked, just a GoPro when driving, no idrive, radio will be removed etc. Won't be regularly street driven (sometimes but very much not daily) and will be on tender most of the time. My only concern is how it'll play with the IBS for maximum longevity since I don't want to inadvertently reduce the life? I tried to look up other people's experiences, but it seems like even in the M3 world, lithium batteries are a relative rarity. I gathered that generally coding to 60ah AGM is the best idea, is turning it off entirely a terrible idea? So for me would there be any downside going with the 30 or 40 over the 60? I feel the 24 might be a little small but yeah I really don't know. And the IBS?

Is the body still flexing with any decent hp?

They all aren't already spoken for?

They’re gonna sell a million of these

Hey all... yes we do now offer a 60Ah Version of the Batteries for the H6/Group 48 and H7/Group94r sizes. But honestly you don't really need that unless you have alot of extra accessories or want you car to be able to sit about 3 months or more without putting it on a charger. It would also be a better option if you are driving or at or below freezing weather, or just want those extra Amp Hours. We have tested the the 30Ah and 40Ah a ton.... and Yes we make a 24Ah model but that is if you have a staight up Performance Car that you don't mind putting on a maintenance charger regularly and looking after it a llittle more since it is lower Capacity. Keep in mind all our new batteries have WIRELESS built-in Jump Starting... so you will always be able to start the car again, or get into your frunk even if you left the lights on or a stereo on accidently. So that is a cool feature.... but we don't want you using the built-in Jump Starting as a regular feature... so you should buy the right size battery that would allow you about 6- 8 weeks of the car sitting in storage and not needing to be put on a mainatainer. So usually the 30 Ah and 40Ah versions are the go to batteries for mostly street use. If you have a GT3 then they has a slightly lower Parasitic draw than the Turbos ( I'm talking 991 varients) so the 30 is a good option for the GT3... and the Turbo which usually has heated seats and such might be better with a 40Ah. But both will work. We know that the 991s and later have a VERY LOW parasitic draw on them, where as the earlier 996 and 997 have a higher parasitic drain on the batteries. OUr GT3 RS can sit for over 2 month in our 2016 GT3RS and easily start the vehicle 2 months later. If you have Cameras, or Radar detectors that stay on they can reduce that time... so be aware of that. With extra accessories you want more Amp Hours since even a small cigarette lighter charger can draw significantly on any battery. Any other questions let me know.