Re: [EVDL] Inexpensive retiree-friendly EV?

2015-05-10 Thread Danpatgal via EV
Our iMiev has served us really well, and is much easier to get in and out of
than a Leaf, which is probably a consideration for older people.  Some
people can't get past the looks, but once you get in and drive it, you
appreciate the spartan (easy) interface, visibility (as compared to the
Leaf), space inside, ease of parking, and good capability.  And, used prices
are now quite low because a lot of the lease deals made back in 2013 are
coming due.  Low mile 2012 iMiev's are listed anywhere from $7.5 to $10k. 
If you want to go for a new one, some people have found some amazing deals
(one guy under $10k) after the federal and state tax credits - though
finding new might be a little harder as Mitsubishi hasn't shipped a lot of
2014 or 2016 models.

(Incidentally, I don't know of any teething pains on the iMiev; ther's
been only minor recall work since we had it, I'm not aware of any heat
related issues on the battery pack and I've heard of only a couple pack
failures in the US.)

You can see several people on the www.myimiev.com/forum/ has a lot of
information including several threads on buying a used iMiev.  

Good luck!

Dan



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Dan Gallagher
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Re: [EVDL] Cold Charging Lithium Experiences

2015-02-25 Thread Danpatgal via EV
Electric Vehicle Discussion List mailing list wrote
 An example is Powerstream 
 Batteries lt;http://www.powerstream.com/LLLF.htmgt; show in their 
 specifications charge down to -40 C. 

I just looked at that, and I read the charge temperature range to be from 0
C to 40 C.  Am I reading that wrong. I just checked the CALB (LiFePO4)
specifications I have, and they state charging is allowed from 0 C to 45 C. 
Spring can't come soon enough.




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Re: [EVDL] Cold Charging Lithium Experiences

2015-02-20 Thread Danpatgal via EV
Reviving this thread as we're having another very cold stretch here in the
Eastern US.

My batteries (SE130 CALBs) are still going, but boy do they sag when it's
cold like this.  It's annoying.

I've been charging when my BMS sensors (atop each cell) are over 0C, which
they have generally remained over the past few weeks despite the cold
(thankfully my garage generally stays above 0C).

But, my follow-up question on all this is if the BMS measurement is good
enough.  For example, I guess there is resistive heat that gets generated
upon charge/discharge/shunting that probably make the sensors read higher
than the cells themselves.  How much, I don't know.  

Does anybody have any thoughts, experience on this?  We've gotten down to
-20C with a HIGH today of only -10C ... yet I'm charging.  I didn't really
want to do it, but I was dragging so much on the road with low SOC%, I had
to, or risk having to really limp home. 



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Re: [EVDL] Electric bike information

2014-08-27 Thread Danpatgal via EV
Nice summary.  I would say you're a little optimistic on total weight for an
e-bike, I use a hub motor with a light 15ah 48v battery, and I'm easily 30
lbs over a standard, maybe just a quibble.  The regen % however is a bit
less realistic.  I ride my e-bike up/down hills, and don't get more than 5%
regen, on a good day.  Also, the small amount of drag when the hub motor
is off is more than slight, it's rather like cycling with a partially flat
tire.

Otherwise, nice general write up.



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Re: [EVDL] CALB bolt terminals getting hot -

2014-08-15 Thread Danpatgal via EV
I have on my to-do list to clean up the connections.  With the BMS modules on
there it's just a pain and I have to be very careful (I know - if I had done
it at the beginning ...).

I noticed the temperature first while driving from the BMS (Lithimate Lite)
telling me one cell was getting over 40C.  What was odd was I still got it
on a cooler day (in the 70s), so it made me suspect the connections.  So I
checked a few of the bolt heads with my fingers for comparisons and noticed
a few much warmer than others (none hot to the touch, just very warm
instead of just warm or cool).  I used the laser temperature gun just for
some idea on the number ... and my fingers didn't lie ;).  Those few were
4-5 C (10-12 F) warmer than the rest.  

I don't want to make a mountain out of a molehill, just wondered if there
might be others having similar issues with CALBs that I should be aware of
(bolts, straps, terminals ...) other than just a layer of corrosion on the
terminals.

Thanks for the comments - Dan



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[EVDL] CALB bolt terminals getting hot -

2014-08-13 Thread Danpatgal via EV
I am using 38x130 ah CALBs in my Lectric Leopard and have had a too hot (
40C) warning on my BMS come on a few times in the last month or so.  Today,
after a longer stretch of accelerating uphill to home, I checked some of the
battery posts.  Measuring with a laser sensor, several of them were around
33C , in a grouping, maybe 6 or 8 posts adjacent on the most positive side
of my pack.  Posts just a few cells more negative were much cooler, maybe
around 26C or cooler.

I checked the bolts to make sure they were tight, and didn't notice any real
problem with the connections being loose.  My only other thought is that
perhaps (as has been discussed in other threads), these connections have
corroded over time ... adding a little resistance layer (I didn't initially
polish or use Noalox on those) that is now finally heating up.  I am also
using the original copper straps with steels M8 bolts.

Are others noticing this kind of heat with the lithium cell terminals? 
Aside from just cleaning the terminals and putting on some Noalox, might
there be other things to do?  I installed these in Sep. 2012, so they are
not quite two years in service.

Thanks - Dan



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Re: [EVDL] EVLN: 2014 i-MiEV, most affordable EV in America arrives this spring

2014-05-27 Thread Danpatgal via EV
Tom ... there is no Wh or Ah meter standard, but many have done measurements
using a Canion plug and application and posted on the myimiev.com forum. 
A quick google search like consumption speed site:myimiev.com results in
some good threads about it (like this one:
http://myimiev.com/forum/viewtopic.php?f=22t=391)

I agree a larger pack (to get say another 20 miles) would be really nice,
that's what I'd ask for before anything else. I can't say I'd care too much
about a 6.6kw charger - yes it would be nice on occasion, but we so rarely
opportunity charge (not much available near us) that home charging is about
all we get and suffices for probably 99% of our trips.  - Dan



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Re: [EVDL] EVLN: 2014 i-MiEV, most affordable EV in America arrives this spring

2014-05-23 Thread Danpatgal via EV
In 2012 when I bought our iMiev, it was over $8k less than the Leaf (just
before the S version came out), so that was a big difference for me.  Once
the S Leaf was introduced, it was closer in price, but was stripped of some
items the iMiev had (better regen, quick charge) that the iMiev still seemed
like a better value.  For 2014 the iMiev is the clear price leader, unless
you can survive with a two-seater / or absolutely need a five-seater.

Peri - Winter and highway speeds do suck the iMiev's range.  I'm pretty
spartan with heat, and don't generally go on the highway, so could always
squeeze 50 miles in winter, but we also had a really bad winter (1-2 months
with temps often around 10-20 F) in PA, so more mild climates (not sure
where you are), would be easier to manage over 50 miles generally.  If
you're doing mostly highway + cold in your Leaf to get 50-55, the iMiev is
probably 10 less than that.






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