Recent content by croustibat

Seriously , stop with that know it all tone when you dont know a thing. I do not pretend knowing a lot on batteries. But i know my way around cars, so stop trying to prove me wrong on simple layout questions. You may have had a lot of RWD cars, but your messages show how you dont know much their...

On RWD cars the engine is mounted longitudinally, and the gearbox is usually between the driver and the passenger. I dont know any RWD car that is not like that. The starter motor drives the flywheel, which is between the engine and the gearbox, meaning it ends up very near the firewall...

I think they are 26650 cells, but i did not check. I received the battery in a hard case and did not want to disassemble it. Now in the car, so i wont remove everything to make a pic. Engine is a 4 cylinders 1.8L turbo ( 8.5 to 9:1 compression, cant remember). Actually it would be a good...

So, a bit of update. I got an OSN 4S4P battery, A123 cells (approx 10AH). I have to say nancy/april has been very reactive and gave some good advices. I will be testing that battery for a local shop. So far i am quite impressed. The reasons we want to push these through a tuning shop are these...

Tesla does not need to bother about air pressure, temperature, humidity. Plane makers do. Also, "venting outside" means accounting for various debris, ice shards and birds that could come in... or out. If cell debris are vented outside along with fumes, and damage the rear of the plane or the...

Yes, it is impossible. That is just some marketing bullshit (sorry, no other word for that) created by shorai named "PBeQ", so that people could compare SLA type batteries. a 36AH "PBeQ" LFP means it can do the same CCA as a 36AH SLA battery. Not that it has a 36AH capacity. The real capacity...

I am a software engineer. I work mostly on critical embedded system like plane flight controls computer, air systems, engine control and so on. I help designing the whole system, then i do the software part, and keep some horizontal relationship with each group (hardware, system, CEM...

I worked on plane air systems (although on different planes, sukkoi superjet 100 and chinese copy of the airbus A320). The main reason for this not being done is the sudden pressure change / differential would tear the plane in half, or kill everyone. You need the place to be accessible, so you...

Yes I did. They are mostly using ballistic and shorai products, which is quite overpriced compared to what i can see here.

Ok, some news ... i am NOT going the HK route. That battery is on backorder everywhere ... except in the nearest warehouse from my house, and it is in the UK. Meaning as i live in France, no custom duty or anything. They even offered me a 10% discount on the 8.4Ah battery ... and then told...

I didnt think about the alternator current. If it really applies 30A, i have to use cells that can take that as a charge current :? But maybe this is due to his battery having a very small capacity ? 2lbs mean it should be around 5 ot 7Ah... As far as calb go, their smaller cell looks to be...

I checked these one, and i seriously considered the hobbykind one. But it seems the 30C rating is faked, and it is more a 10C rating. Someone here tested it and was not that impressed, there is a thread about it in the battery section. That is the cheapest and simplest solution i could find by...

Which means i need to balance them on a regular basis, and no i am not using a lead acid battery again. I need to remove my front bumper, support bar, intercooler and half the intercooler plumbing to just remove the battery, and i cant fit a smaller SLA one.

The alternator will always apply some voltage though; wouldnt it be similar to try to charge the battery all the time, like overcharging it ? I still need more info before deciding what to do, as i am currently waiting for some rose joints to be delivered, so the car is not going anywhere for...

Thanks for reply. I am not doing competitive racing, just doing trackday events. This allows me to run unlimited mods -bar security ones- which lowers global costs, and is still very fun. Voltphreaks looks like a total ripoff to me. 700$ for a 11AH "lead acid equivalent" ? Thats means a mere...