I AM driving a Smart ED and I too thought that sounded a bit fishy and I
too disagree that regular cycling is "good" for the batteries.
BUT one thing that sets Smart apart is that the battery is rented
(optionally but most folks choose it). I'm leasing my Smart and I have
to send two checks every month: one to Mercedes Benz leasing for the car
and a second one to Daimler for the battery rent. If there's ever a
problem with the battery they have to install a replacement for "free".
Nothing says it has to be new although I would be upset if it had
significantly less capacity than the old one. If they really keep a
stock of batteries on the shelf to satisfy rental replacement then
perhaps it does make sense to get some money out of them by using them
for this purpose. That assumes, of course, that it's easy for them to
pull the batteries out of the power-plant to install in my car.
--Rick
On 02/09/2016 03:32 PM, EVDL Administrator via EV wrote:
On 9 Feb 2016 at 4:21, brucedp5 via EV wrote:
To be usable in the event of a replacement, a battery requires regular
cyclising during its storage period, i.e. specific charging and
discharging for the purpose of preservation. Otherwise it would suffer
from deep discharging, which can lead to battery defects.
Huh? Who said that lithium ion batteries needed to be cycled (or
'cyclised') while in storage? Aren't they OK when stored at around 40-70%
SOC?
The way I heard this deal a few years ago, the idea was that when the
battery capacity was too low for use in an EV, the battery would be demoted
to grid leveling service.
Unless this "reporter" is as clueless about this Diamler notion as he is
about how steam cars worked, in Diamler's world, it's the other way round.
I don't think that's a world I'm interested in joining, thank you.
It sounds like if I'm driving a Smart ED (love that designation) and I need
a new battery, I can't have one. Diamler will sell me a USED battery, one
that's been doing grid leveling for some time already. Are they going to
give me a price reduced by the proportion of already-used cycle life?
Something smells kind of foul here.
David Roden - Akron, Ohio, USA
EVDL Administrator
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