This has happened to me twice. During my last service visit, the South Florida service manager told me they are now replacing the batteries proactively during the yearly service. He indicated they are also looking at possible long term solutions. I know lithium-ion and other "motorcycle" size high performance batteries are available, I sure hope they come up with something.
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I'll definitely watch my Ranger change it to see what he does. When (obviously not if) it happens again after my warranty expires I'll just change it myself.
strider
Active Member
Yeah, I'd be curious on the specs (size, amperage, etc). I use Shorai Li-Ion batteries in my motorcycles. Saves a TON of weight over Lead-acid but these are track bikes so they sit on a balancer for weeks (months now that I have a kid) and then get used for a day then back on the balancer. I don't have longevity data on daily use.
When my Ranger went to unscrew the bracket to remove the old battery, the bracket actually broke. He was very surprised - said he'd never seen that happen before. Fortunately I had some big-ass tie wraps in the basement.
Needless to say he's coming back...
Needless to say he's coming back...
W.Petefish
Active Member
Thats where zip ties come in handy. (haven't broken anything on the roadster, but have on other vehicles especially w/ rusty bolts.)
DrComputer
TeslaClubLA President
DrComputer
TeslaClubLA President
After talking to David at the LA service center (he's the new service manager) about this issue, they are going to start automatically replacing the 12v batteries at each yearly service.
They do shut down main power for a while, in order to remove and blow the dust out of the PEM. Maybe that somehow stresses the 12V battery?
strider
Active Member
I'm coming up on my second annual and no problems so far. Will ask when I bring it in sometime in November.
JRP3
Hyperactive Member
Seems as if that would unbalance the pack and cycle those cells more than the others = bad idea.
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They could put a 12V power supply on the battery during service, or disconnect it. If that battery has to be replaced once a year it's obviously not sized properly.
Botbldr45
Member
Does the 12V battery get recharged by the ESS when the car is running or does it just drain down like an ipod after each use???
JRP3
Hyperactive Member
There is a DC/DC converter that drops pack voltage down to 12V for the battery. As I remember it's a dual output unit, one channel goes to the 12V battery and the other powers the 12V accessories.
jordanthompson
2018 P100D Model X
Doug_G;192069Seems to me these batteries have a limited lifetime; perhaps they should be replacing them on a schedule...[/QUOTE said:
Mine wasn't, and it failed a week after my annual service resulting in another Ranger service call. Then the mounting bracket fell apart and another Ranger service was required to fix that.
It appears some local service centers have taken to replacing the battery automatically, but it does not appear to be a corporate policy.
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