On Wed, Aug 8, 2018 at 6:38 AM David Nelson via EV
wrote:
> On Mon, Aug 6, 2018 at 7:51 PM, Alan Arrison via EV
> wrote:
> > I guarantee that the inferior Chinese cells will change capacity as they
> are
> > cycled and not by just a few percent.
> >
> > Running them without a BMS is a recipe
On Mon, Aug 6, 2018 at 7:51 PM, Alan Arrison via EV wrote:
> I guarantee that the inferior Chinese cells will change capacity as they are
> cycled and not by just a few percent.
>
> Running them without a BMS is a recipe for disaster. Damaged cells at best,
> a fire at worst.
>
> All the Chinese
Alan Arrison via EV wrote:
All the Chinese cells are junk, especially the CALBS.
I would not go so far as to call them "junk", though I too have bought
examples that were certainly of very poor quality.
Chinese business practices also leave a lot to be desired. The specs
aren't honest, and
I have 48 CALB CA100's in my truck, also 5 years old. I've never even
had to top off any. I checked them in the Spring and they were all
within 2 thousandths of a volt of each other. In July I had one of those
*doh* events and drained the *entire* pack to 9 volts. I recharged the
pack and they
I really have to beg to differ about CALBs.
My Focus has 45 CA180 cells that have been on the road for about five
years without BMS. Once a year, sometimes twice, I pump a few amp hours
into the lowest cells with with a radio control type charger.
That usually involves about five cells.
I do
On 6 Aug 2018 at 22:51, Alan Arrison via EV wrote:
> All the Chinese cells are junk, especially the CALBS.
I know about the used and new OEM EV (Leaf, Volt, etc) cells, but are there
ANY LiFePO4 cells available to the hobbyist (especially at a more or less
affordable price) that aren't
I guarantee that the inferior Chinese cells will change capacity as they
are cycled and not by just a few percent.
Running them without a BMS is a recipe for disaster. Damaged cells at
best, a fire at worst.
All the Chinese cells are junk, especially the CALBS.
Al
On 8/6/2018 7:48 PM,
On Tue, Jul 31, 2018 at 9:25 PM, Tom Hudson via EV wrote:
>
> Those two were ZERO VOLTS, and show ZERO OHMS resistance.
>
> Is this a common failure mode of lithium-ions (or the CALB modules)? I'm
> thinking that I'd better set up some kind of fusing between the buddy pairs
> because if one of
