Ostrichsak
Well-Known Member
Ranting. ROFL And people wonder why I don't take the time to fully explain crap 37 times.Standard Tesla OEM batteries might last a few months. Or 4.5 years. What's your point? We've seen results that are all over the place here on TMC. My takeaway from all that is the OEM 12V in this application is not consistently reliable and heavily dependent on driving pattern/usage.
Sure, I have ZERO data to back up that it will last 2x longer because they haven't been in existence in this application for that long. I'm looking to get at least 4 years out of the Ohmmu and I am confident enough in LiFePO4 technology that I am willing to give it a try. Guess what, they have a 4 year warranty. Good enough for me. And in many other applications, LiFePO4 has been demonstrated to be superior in many critical categories:
The Complete Guide to Lithium vs Lead Acid Batteries - Power Sonic
There is plenty of data out there to support LiFePO4. I believe all that data over your ranting. Worst case scenario, I paid an extra $300 for this experiment. Heaven forbid. So far so good -- that is still a data point whether you like it or not.
Lastly, I asked you before, what is the warranty on a replacement 12V battery from Tesla? You never answered me. Is it at least 4 years like the Ohmmu?
For all the rest of you out there reading this, do whatever you want -- it's your money. I'm not trying to convince anyone of anything.
A couple of quick take-aways from your post....
1) you say that OEM batteries last anywhere between "a few months and 4.5 years" and yet you arbitrarily choose to replace yours at the 4-year mark regardless of how it tests. You don't see why someone might question this decision? Again, you're welcome to do whatever you want with your car and your money but coming on here acting like you're doing something of great value is potentially misleading others with the same type of misinformation these Ohmmmu clowns are trying to cram down people's throats to sell them snake oil.
2) You link to "facts" to back up your case and yet there is ZERO data about EVs, Tesla specifically. Do you understand how the 12v battery demands on an ICE are entirely different than those of an EV? Take the time to educate yourself on those differences and you will see why I'm 100% there is zero gain to be had from these types of batteries in these cars.
3) The Tesla warranty for replacement isn't in question here because it is the standard by which we're comparing aftermarket parts. That said, Tesla warranties the 12v battery for the duration of the 4-yr/50k miles warranty so they must source parts that at least meet that expectation otherwise they're going to be out millions replacing parts for free. You'd agree that that would be pretty foolish of ANY car company, right? If an OEM battery is known to last 5 years give or a take a year (minus a few outliers on either side of the spectrum) then simple math tells us that an aftermarket option would have to last twice as long to justify the price tag being 2x higher. That's 8-10 years just to BREAK EVEN on your investment. If the manufacturer isn't willing to back their product for that time period why would you come to the conclusion that this is somehow going to save you money? The fact of the matter is that the industry standard for a LiFePO4 battery is about 5-7 years of service life. About the same as the Tesla OEM battery that we've all seen first-hand going back to 2012 now. In fact, I would attest that if you plan to replace your battery every 4-years regardless, wouldn't it make sense to use the battery that costs half as much that you've already had luck getting beyond 4-years with? Do you really plan to push that Ohmmu battery to 8-10 years to recoup any of your investment? Not much of what you've said makes sense.
So, based on facts and data instead of emotion and hopes, the people here touting how wonderful these Ohmmu (funny, they all call them by brand name instead of the type of battery... no shilling, right?) batteries are are either trying to convince themselves that they made a good purchase (this is possible, but I doubt it) based on bad/limited information or they're shilling for the company for some sort of kick back behind the scenes selling snake oil. I tend to follow the money.