wrote:

On 24 Feb 2012 21:26:19 GMT, Bob Eager wrote:

http://theunderstatement.com/post/18...-tesla-motors-
devastating-design

That is just one ****ed-up bit of design if something as simple as a
battery disconnect on depletion to a setpoint is not included.

Crapola.

If the report is accurate it really just is **** poor engineering.

1) Why do half the cars systems have to remain powered up?

2) If they do, why do they take more than a milliamp? With a battery pack
like Tesla has, a miliamp would take years to discharge. Most embedded
microcontrollers can idle in a mostly sleep mode below 1uA even allowing for
period waking up to check something.

I have a lead acid battery which has a capacity of less than 100Ah and yet I
can leave my car for weeks despite there being a couple of devices that do
draw.

3) If the batteries get to a critical level of discharge, why doesn't all
the electronics shut down cold? OK - this may require a bit of intervention
to reboot the system with a charger attached, but it would be a lot less bad
than chemical destruction of the batteries.

Tesla must know its a scam/**** design or their warranty would cover it.
It's ******** to say it's the user's fault for not charging the system -
Tesla are completely in control as it is their electronics between the
batteries and everything else.

--
Tim Watts