Skip to comments.“It’s A Brick” – Tesla Motors’ Devastating Design Problem ($40K battery replacement)
Posted on 02/22/2012 9:59:24 AM PST by fishtank
click here to read article
I truly hope Tesla resolves this issue and can bring the cost down. It is a neat vehicle albeit not with all the ease and range of gasoline.
Last summer I was riding my GoldWing on an expressway and saw this red sports car gaining on me real fast. It was a Tesla. When he blew by me the only thing I could hear was my bike (and unless you ride a GoldWing you don’t know how quiet they can be).
It was just like wooooooosh and he was gone. Nice looking car but like all electrics needs a better power source.
I don’t use trickle chargers unless it is something like a Lithium Ion. Even then that is a inconvenient option IMO
Not to be trusted. He is very intelligent, great history teacher, and should be in a high ranking position , perhaps in maybe the budget. or working out the housing and banking debacle.
He simply is not conservative at heart. It is a false promotion
check out the following link for yourself ...
No, it’s just that storage capability and discharge rate are two completely different things.
I have electric R/C helicopters. At 4.2v/cell they take off like a rocket. At 3.8v they will sink to the ground (although I don’t usually let the batteries get that low). There is still energy stored but it can’t be discharged at a high enough rate to usefully turn the rotors (and would damage the batteries if you could).
There are millions of laptop batteries out there that have to cope with this same issue. I wonder how many lines of code my computer's battery contains.
Here’s what’s sucking the juice. You obviously didn’t read the text:
Tesla added a remote monitoring system to the vehicles, connecting through AT&Ts GSM-based cellular network. Tesla uses this system to monitor various vehicle metrics including the battery charge levels, as long as the vehicle has the GSM connection activated4 and is within range of AT&Ts network. According to the Tesla service manager, Tesla has used this information on multiple occasions to proactively telephone customers to warn them when their Roadsters battery was dangerously low.
Problem isn’t from daily use type stuff, it comes into play if you decide I want to put my car into storage for 6 months for winter... you can’t just throw a tarp over it and forget about it, you better have that sucker plugged in the entire 6 months, or at least, check on it and plug it in from time to time.
>>Dont you mean side of the Rhode?
In Road Island.
The Prius battery is WARRANTED for 100,000 miles. That’s not a measure of “how long it lasts”. Most cars for example have 60,000 mile full warranties, it doesn’t mean the car is going to stop working at 60,001 miles.
The warranty is longer in California, because it’s part of the emmissions system, and there are no special batteries in California, so it is assumed the battery would last the same length of time in all cars.
I have two Prius cars. One has 10 years and 102,000 miles with no battery problem, the other is at just under 8 years and 120,000 miles with no battery problem.
The retail price of the battery is over $4000; however, when I totaled a Prius and looked into parting it out, I found that you can generally get gently used battery packs for $1000 or so. I can imagine people out of warranty going that route.
There haven’t really been wholesale battery replacements yet. It is assumed that when there is, Toyota will start recycling and refurbishing (internally, the batteries are d-cells, so they will be able to pull them, measure them, and rebuild packs with the good ones for a fairly small cost relative to building an all-new battery pack).
The Prius maintains it’s battery between 40% and 80% of charge, so the “wear” on it is virtually nil. And the battery is not quite an “integral” part of the system — I mean, you can’t go without it, but if it merely manages to hold charge, you can still mostly drive the car, the battery is just like a “flywheel” storage medium for generated electricity.
The Tesla problem is that they have a lot of electronics on board that drain the battery. The management system shuts most of them down when the battery drops too low, but then it can still drain at a slow pace, and if you don’t have it plugged in, eventually the batteries will drain.
BTW, the Prius has a similar problem, with the 12-volt battery. It runs the locking and key detect mechanisms, and if you leave the car long enough, the 12-volt battery will be dead. In the older Prius, the 12v battery was so small, this could happen in weeks. The newer Prius and the newer replacement battery for the old one last months. But it is recommended to disconnect the battery for long-term storage (this is actually true for other modern electronic-lock cars).
The stupid thing is you have this huge charged battery, and can’t start your car because you can’t turn on the computer to start the inverter. But I’ve jump-started the Prius with a 12-volt portable drill battery.
Every car has something. On the bright side, I have yet to replace the brakes on either of these cars.
He can only out run you for a little while then you will pass him as he sits out of juice on the side of the highway completely silent.
Out of Gas, half charge / No Mo Go left.
You know it Will Happen.
It won’t be an every day occurrence but it will happen.
Not only did I read the text, but my long technical background conditioned me to reject ambiguity in critical processes, and NEVER to rely on inferences.
That Tesla "added" something does not clearly report that it is a feature on just the most recent models sold, or they recalled all previously sold cars. See the problem?
Since the article didn't include anything to the contrary, one must assume that ALL cars sold are prone to the same failure, upgraded or not.
In addition, the "added" feature could well, have been powered by a small additional rechargeable battery, which could monitor anything for weeks if not months. Monitoring would not need to be continuous. Unless the main battery voltage drops like a rock off a cliff, brief ( less than one minute) monitoring every 6 or 12 hours may suffice.
I bought a Sears Diehard Security battery in the late 1990s. Main feature was a remote fob that disables the battery from starting the car. Secondary feature is that if the stored voltage dropped too low, then the battery stopped delivering power until the security fob was pressed. That way, you could still start the car if you ran the radio and accessories too long with the engine off.
Unfortunately, my remote fob died 5 years ago. Meanwhile, Sears had stopped selling the battery. Tried to get instructions on resetting the fob, with no success. I removed the security pack from the battery, and am still using the battery 12 years after buying it.
This old technology is what Tesla needs.
Isn't that about a verbatim repetition of Murphy's Law?
My personal "blond moment" happened within weeks of buying my Prius in 2003. I bought it as my personal hi tech toy, to explore its capabilities and new technology, etc., NOT to save money on gas (gas was around $1.50 at the time.) I was commuting 70 miles round trip daily, unfortunately on a stretch of I5 with widely separated communities with gas stations, and a very heavy count of large trucks; two lanes in each direction.
I wanted to check the mileage possible on a tankful of gas. The Toyota brochure trumpeted 600 miles between full tanks, and I was determined to check reality and compare it to advertising BS.
I ran out of gas a mile and a half from the next gas station. I learned two very important lessons that day.
First, when totally out of gas, regardless of anything else, the speed drops from 60 or 70 to around 45 in a matter of seconds (exciting, when in the faster of the two lanes, and bumper to bumper truck traffic.) Second, the battery powered the car exactly one mile, before shutting down completely. That was a test of the robustness of the main batteries, and the sophistication of the computerized system control software.
A third lesson, learned over the next few months, is that the Prius has a fuel guage system more primitive and less useful than a Model T ford. The bladder system used in the gas tank allows it to read "full" and shutting off the gas pump between 80 and 90% af actual "full." I routinely forced an extra 1 to 2 gallons topping off without spilling. A strange design flaw on the part of Toyota. A Yaris, purchased in 2008, has the identical problem.
Just for information, the Prius regenerative system might work, but it never did for me, because it relies on jackrabbit starts and stops. Not my style. As a result, I NEVER got higher mileage in the city, as advertised. My commuting history settled on around 47 mpg.
As an unexpected bonus, if ODumbo is reelected and we are faced with rationing, I will laugh as I will be assigned more gasoline than I would ever need. All the abuse that I have received from the muscle car and pickup truck crowd will be the source of constant Schandenfreude.
You’re obviously smarter than the Tesla boys and girls, they pay big bucks, and are located in beautiful Palo Alto, Cal.
I nominate you to go save them!
Constant abus? Just because it is an undertired, underbraked, underpowered, overpriced, overweight, auto.
They should have called the the Fantasy, Appeaser, or the Charade (Hyundai had that name first).
Whats funny is when I pass one I look inside the car and see someone who wants to stick their feet through the floorboard to make it go.
I'm astounded at this. ASTOUNDED, I tell you. Really, though, you leave your car at the airport for a few days and come back to a . . . brick? As I frequently say, I would laugh this off as the growing pains of a new technology if I wasn't being forced under pain of losing my house to help pay for it.
It's called the CRUZE ,, it's a decent car , it's less than half the Volts price ... and it gets up to 42mpg hwy ... in real life with extended mileage daily so the 25 miles of electricity doesn't distort the numbers ,,, they would both use equal amounts of gasoline.
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