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Oh and the Rear view Camera comes on immediately on reverse now, with the old Lead Acid Battery the rear view camera screen would go black for 3 to 4 seconds before it turned on.
Fred
Hmmm.
I would assume that has more to do with a power reset, rather than the battery having an impact. But who knows.
Still interesting regardless ...
Morning Cap. I’m curious if the original battery was AGM and the replacement is the same.I don't understand the point of this. There are three basic causes of premature failure - a faulty manufacture (likely in this case), severe overcharging - a dangerous situation with any battery, and chronic undercharging (may be hardware, software, or just plain neglect). I don't see how a $450 battery solves any of these problems.
I would much rather replace the stock battery for $0 and find out if the car itself has a problem. Putting a lithium battery into possibly faulty charging system seems dangerous.
And getting excited about saving 12 pounds on a 4000 lb car is pretty silly, though I appreciate that we do many silly things because it feels good!.
Thanks LGA. Do you think the replacements are AGM batteries?The original battery is actually a very cheap (to Tesla) conventional lead-acid battery. Tesla didn’t want to spend a lot of money for a battery that doesn’t really do much other than keep some low-draw electronics running when the main battery pack is off.
The stock battery is a 45 amp-hour deep cycle AGM battery, value should be under $100. My post concerned replacing it with a lithium ion battery for $450.Morning Cap. I’m curious if the original battery was AGM and the replacement is the same.
Are AGM Batteries Better?
An AGM battery is certainly cheaper than lithium, but a good step up from the flooded batteries that are used as starting batteries in most cars. I haven't seen any evidence that lithium is better in this application.The original battery is actually a very cheap (to Tesla) conventional lead-acid battery. Tesla didn’t want to spend a lot of money for a battery that doesn’t really do much other than keep some low-draw electronics running when the main battery pack is off.
Thanks Cap. From what I’ve read Lithium ion 12 volt batteries are sensitive to cold temperatures even though they have some form of BMS built in. Apparently error messages are common.The stock battery is a 45 amp-hour deep cycle AGM battery, value should be under $100. My post concerned replacing it with a lithium ion battery for $450.
An AGM battery is certainly cheaper than lithium, but a good step up from the flooded batteries that are used as starting batteries in most cars. I haven't seen any evidence that lithium is better in this application.
Do you have a source for this? I haven't seen any mention of that. I could imagine that due to a shortage a flooded was substituted but even that seems unlikely.Tesla is definitely NOT refitting the batteries with AGM. As I said before it is a really cheap flooded cell lead-acid.
It is a myth that AGM batteries are totally sealed. In fact they must be vented or they would explode in an overcharge event. Many AGM car batteries have a vent that can (must!) be fitted with a vent hose. Lots of discussion about this on various forums such as miata and bmw and examples of AGM sold with vents for fitting in miatas, etc.You don’t have to take my word for it. Just go look at the battery. It has a vent tube connected to a hose that is routed overboard. AGM batteries are sealed and have no vents. Also consider that all this battery has to do is keep some low power electronics running when the main batteries are powered down. If it gets discharged past a certain point, the main batteries power up and recharge it. Tesla didn’t bother with a more expensive AGM in this application because it wasn’t needed.
Hey I don’t blame you for not believing some random dude on the internet, so no hard feelings. Atlas BX are cheap flooded cell batteries you can get from Menards if you google it. I wish I could share more, but you’re just gonna have to take my word on it, which on the internet isn’t worth very much.
Morning LGA. I’m still curious as to why my battery needed to be replaced. I’ve never had a 12 volt lead acid battery go bad. Any insight?You don’t have to take my word for it. Just go look at the battery. It has a vent tube connected to a hose that is routed overboard. AGM batteries are sealed and have no vents. Also consider that all this battery has to do is keep some low power electronics running when the main batteries are powered down. If it gets discharged past a certain point, the main batteries power up and recharge it. Tesla didn’t bother with a more expensive AGM in this application because it wasn’t needed.