#2: EarthX ETX900 Lithium-Ion BatteryĪs discussed earlier, Tesla does have some personal beef with aftermarket 12V batteries. One thing I can say for sure, if Tesla and Ohmmu make things up, don’t hesitate a second to invest in this battery if you prefer aftermarket options. Meanwhile, they’re also upgrading their battery to adjust with the new software, and it’ll be out in a few months as of this writing. To counter Tesla on this issue, Ohmmu has started a petition, hoping that if enough Tesla owners participate, Tesla will let them sell 12V batteries in peace. Ohmmu makes a 12V Battery for the Model 3 > Tesla releases a new software upgrade that somehow messes with the Ohmmu battery’s functionality > Ohmmu carries out changes > Tesla again releases new software > and it goes on and on… It’s just a matter of time until old aftermarket auto frunk/trunk and self presenting doors start to malfunction depending on what Tesla does? Perscitus Now Ohmuu is indeed great, but this game of cat and mouse with Tesla is changing things (diagnostics, CAN bus messaging, v8/9/10/11 GUI, etc.). ![]() Now they’ve done it again and are bound to do it again after the fleet of 3/Ys switch to the 18v for the 2022 refresh. At the time Tesla also changed something in their diagnostics and/or 12v monitoring and charging logic which caused issues and false positive alerts pre or post MCU software updates. We’ve been here before with the 1st gen Ohmmu batteries for the 3 about 2-2.5years ago. For anyone else that is seeing this issue with the Ohmmu and the recent software updates… are you more or less continuing to drive like normal until the fix is available? I see the USB ports and heated seats don’t work in this condition, and I’m fine with that, but wondering if anyone in the same situation is going about business as usual until the fix is ready? Truav8r In the meantime, the article implies that the 12v is most likely fine (I’m surmising mine is fine, as it’s only been in service for 4 weeks). Ohmmu’s support article says they are working on a fix and it will involve some kind of hardware fix/replacement. I’m on 2021.44.30 but it covers a couple other versions preceding that. Did some quick reading, and was preparing to contact Ohmmu with details, when I came across their support document outlining how this error might come about with a few recent software updates from Tesla. Today, I got the “replace low voltage battery” and associated warnings before ever leaving the house. I installed the Ohmmu 12v battery about 4 weeks ago. ![]() To better understand this matter further, let’s hear it from the victims themselves: The 12V battery is durable and has higher capacity and better efficiency.Įverything is great, but still, for some reason, Tesla has been creating obstacles that mess with the Ohmmu battery and create issues for users. Ohmuu is a renowned name in the Tesla community when it comes to 12V batteries.Īny Tesla owner who isn’t satisfied with the OEM batteries for some reason always goes to Ohmmu.Īs far as the product is concerned, it’s definitely commendable. The lightweight lithium-ion battery enhances your car’s efficiency by three to four times, which is a significant improvement over the heavier lead-acid batteries.įinally, li-ion batteries are literally maintenance-free, while lead-acid batteries have to be looked after quite often.īy all means, Tesla’s li-ion battery is better than the lead-acid battery and all the aftermarket options for that matter. Starting with the cost, lithium-ion battery appears to be a more viable option because of its longer life span, even though its initial cost is higher than that of the lead-acid battery. ![]() We’ve already published a detailed comparison of both batteries, but for the sake of this article, I’ll share a brief comparison here too. Per recent studies, li-ion batteries have definitely shown themselves as a better and more efficient alternative to lead-acid batteries, so as far as which is best, li-ion definitely steals the show. Weighing in at only 9.It’s common knowledge that Tesla introduced li-ion batteries as an improvement over its lead-acid batteries which were failing quite frequently. It's time to upgrade your 2013-2022 Tesla Model S 12V battery with a replacement, ultra-lightweight, and performance 12V lithium battery!
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