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<DIV>
<DIV>I say that Chad needs to open up the cooling air inlet on his
charger, try it all again, and then report back so we can all benefit from
his experiment. All those in favor, raise your hand....</DIV>
<DIV>Chad, I just looked at my chargers, and agree with you on the inlet
size. They appear too small. The other interesting thing is
that my original charger came with a hard foam pad to set the charger on.
I assumed that it is for raising the charger up and creating a flat table for
the charger to rest on, providing a space for air to pass under the base.
The two new chargers didn't come with the pad. When I was having the over
charge problem, I felt all around the charger and found the base to be very
warm, so that could be part of the problem also. I believe I am going to
open up the air inlet, and put some larger pads on the bottom of the charger to
raise it up higher to allow more air around it.</DIV>
<DIV> </DIV>
<DIV>Rex</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="FONT: 10pt arial"><B>From:</B> <A
title=mailto:chadnortheast@shaw.ca href="mailto:chadnortheast@shaw.ca">Chad
Northeast</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, March 28, 2006 9:53
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] TP 1010
testing</DIV>
<DIV><BR></DIV>In multiple sessions the display has showed a cell at over 6V
(on multiple chargers, 210 balancers connected) then the next update (charger
updates every 10 seconds) shows a normal balanced pack, there is no way a cell
is going to be at 6V and back to 4V 10 seconds later. <BR><BR>I have
charged with the balancer disconnected from the charger and never receive the
audible alarm from the balancer for over-volt....I have also charged
while measuring tap voltage continuously (major PITA!) and again the
pack itself is fine...pack remains at worst during the charge about 0.020
measuring with the Fluke....and it perfectly in balance at
termination.<BR><BR>I can charge with my Schulze's, no issue, I can charge
with my 205's not connected, no issue....so the only conclusion that can be
drawn is there is an issue with the charger. It almost always happens on
a repeat charge (charger starts hot)...and almost always happens near the
4.05V, 4.10V/cell range...once the charger approaches 4.2V/cell the problem
goes away.<BR><BR>Overall its a slick setup, just this one annoying
problem.<BR><BR>Chad<BR><BR>----- Original Message -----<BR>From: Dean Pappas
<<A title=mailto:d.pappas@kodeos.com
href="mailto:d.pappas@kodeos.com">d.pappas@kodeos.com</A>><BR>Date:
Tuesday, March 28, 2006 10:43 am<BR>Subject: Re: [NSRCA-discussion] TP 1010
testing<BR><BR>> Hi Chad,<BR>> I don't know the internals of the TP
circuits, but if the data <BR>> link from balancer to charger is a simple
alarm, then<BR>> the balancer will have to produce the same alarm/output in
either <BR>> a real over-voltage, or a "can't keep up with a growing
imbalance" <BR>> condition. <BR>> Either way, the circuit worked fine,
to avoid problems.<BR>> <BR>> The FMA just seamlessly slows the charge
rate down, and resumes at <BR>> high-rate, when the imbalance is taken care
of.<BR>> <BR>> <BR>> Dean Pappas<BR>> Sr. Design Engineer<BR>>
Kodeos Communications<BR>> 111 Corporate Blvd.<BR>> South Plainfield,
N.J. 07080<BR>> (908) 222-7817 phone<BR>> (908) 222-2392 fax<BR>> <A
title=mailto:d.pappas@kodeos.com
href="mailto:d.pappas@kodeos.com">d.pappas@kodeos.com</A><BR>> <BR>>
<BR>> -----Original Message-----<BR>> From: <A
title=mailto:nsrca-discussion-bounces@lists.nsrca.org
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A><BR>>
[nsrca-discussion-bounces@lists.nsrca.org]On Behalf Of Chad<BR>>
Northeast<BR>> Sent: Tuesday, March 28, 2006 12:28 PM<BR>> To: NSRCA
Mailing List<BR>> Subject: Re: [NSRCA-discussion] TP 1010 testing<BR>>
<BR>> <BR>> Hi Bob<BR>> <BR>> The overvoltage seems to be quite
common...I get it <BR>> frequently...the packs are not going over voltage
though...checked <BR>> with my Fluke on recharge. Seems to happen
when the <BR>> charger/balancer gets hot...I have seen it display over 6V
for <BR>> individual cells.<BR>> <BR>> My charger goes into CV at
41V....but I have also had them <BR>> terminate the charge early
(41V)....unsure as to why.<BR>> <BR>> Chad<BR>> <BR>> -----
Original Message -----<BR>> From: Robert Mairs <<A
title=mailto:robertm@sssnet.com
href="mailto:robertm@sssnet.com">robertm@sssnet.com</A>><BR>> Date:
Tuesday, March 28, 2006 8:51 am<BR>> Subject: [NSRCA-discussion] TP 1010
testing<BR>> <BR>> > Got tired of building this last weekend, and
decided to do some <BR>> > testing of <BR>> > the TP1010c
charger. Debated whether to post this, but some <BR>> might <BR>>
> be <BR>> > interested.<BR>> > <BR>> > All tests were
done with the 5s3p 6000 prolites that have 90-100 <BR>> > cycles on
<BR>> > them.<BR>> > <BR>> > First off these packs haven't
been touched since the end of <BR>> > september, in <BR>> >
storage all winter. So I proceeded to do a 1c charge, and then <BR>>
> discharged <BR>> > with a cba to ck pack capacity. They're
holding up quite well <BR>> > with about a <BR>> > 4% drop in
capacity as compared to new. 1c charge was quite <BR>> >
uneventful, <BR>> > mostly getting accustomed to the charger. I
used both the 210 <BR>> and <BR>> > 205 <BR>> > balancers, both
worked well with the system. I did order 2 <BR>> charge <BR>> >
systems, <BR>> > but alas one charger had problems and has been sent
back to <BR>> > thunder power. <BR>> > The push buttons seemed to
lock up after a few seconds. Only <BR>> way <BR>> > to get it
<BR>> > to unlock was to power it down. Upon reactivation it would
seem <BR>> > alright, <BR>> > but then the problem would
reappear. This was over several <BR>> attempts.> <BR>> > I
then decided to do a 10s charge after deep cycling the pack to <BR>> >
get a mah <BR>> > reading. Resting voltage of the pack
34.992.<BR>> > <BR>> > A .029 spread over the 10 cells.
Close to the .03, but the <BR>> > balancer said it <BR>> > was ok
to do normal charge.<BR>> > <BR>> > Charger started the initial
charge for about 4 min then ramped <BR>> up <BR>> > to 5amps <BR>>
> as it got close to 37volts. At 40volts charger went into cv
<BR>> from <BR>> > cc which <BR>> > seemed a little
early?? Balancer was working pretty hard by <BR>> this <BR>> >
time. Not <BR>> > sure at what point it was, but the alarms and
bells started <BR>> going <BR>> > off, and <BR>> > the charger
shut down stating overvoltage on cell 6. Balancer <BR>> was <BR>>
> pretty <BR>> > hot and quite active. Not sure why it couldn't
keep up, but it <BR>> > didn't. Let <BR>> > the pack
continue to balance out, and restarted the charge which <BR>> > took
about <BR>> > another 400mah before pack was fully charged.
Anyways, found <BR>> out <BR>> > the <BR>> > overvoltage
feature works! Wisdom gained, if that big of a cell <BR>> >
spread, <BR>> > balance it out first, but I was kind of surprised this
happened. <BR>> <BR>> > First <BR>> > because the balancer said
ok, 2nd I thought the charger wouldn't <BR>> > ramp up the <BR>> >
current until all cells were within specs, 3rd I didn't think <BR>> the
<BR>> > balancer <BR>> > would have any problem at 5amps which is
only a .8c charge.<BR>> > <BR>> > <BR>> > <BR>> >
Redischarged the packs, taking out about 4500mah. Pack voltage <BR>>
> this time <BR>> > was at 37.26 with only .006 spread over the 10
cells. Started <BR>> the <BR>> > same 10s <BR>> > charge,
this time uneventful til completion. The balancer was <BR>> >
quite active, <BR>> > but didn't heat up as the first charge did.
Total charge time <BR>> was <BR>> > 65 <BR>> > minutes and put
in 4594mah. Balancer was still active at end of <BR>> >
charge.<BR>> > cell voltage spread was .012 over the 10 cells, pack
voltages <BR>> were <BR>> > 20.86 and <BR>> > 20.84. Not
sure I like the 10s feature.<BR>> > <BR>> > <BR>> > <BR>>
> Decided to try a 1.5c charge on one of the 5s packs.<BR>> >
<BR>> > Resting voltage 18.68 with a .005 spread on the 5 cells.
Set to <BR>> > 5cells <BR>> > 9amps, fast charge.<BR>> >
<BR>> > 1st 1000mah at about 7min.<BR>> > 2nd 1000mah at about
13min.<BR>> > at 30min was at 3.86amps, voltage at 21v.
4290mah<BR>> > 31min 3.2amps, 4350mah<BR>> >
32min 2.78amps, 4390mah<BR>> > 33min 2.33amps,
4437mah<BR>> > 34min 2.13amps, 4474mah<BR>> >
35min 1.75amps, 4506mah<BR>> > 36min 1.58amps,
4533mah<BR>> > 36min 52sec charge terminated at 4554mah<BR>>
> <BR>> > cv kicked in at 20.48volts<BR>> > <BR>> >
Ending voltage was 20.85 with a .006 spread over the 5 cells. <BR>>
> Noticed no <BR>> > heat buildup in pack, or balancer.
Balancer showed little <BR>> > activity through <BR>> > out the
charge. Didn't work nearly as hard as the successful <BR>> 10s
<BR>> > charge. <BR>> > Used the 205v balancer on the 1.5c
charge.<BR>> > <BR>> > Also tried the storage discharge and charge
which worked quite <BR>> > well. The <BR>> > discharge came
closer at 19.26 volts, can only discharge a 1amp.<BR>> > <BR>> >
Chargers quite easy to use. I'm leaning towards the 1.5c charge <BR>>
> with 2 <BR>> > chargers. It worked very well. Will have
to wait and see how <BR>> > long it takes <BR>> > to get my 2nd
charger back.<BR>> > Anyways that's the way it went for me for those
interested.<BR>> > <BR>> > <BR>> > <BR>> > <BR>>
> <BR>> > _______________________________________________<BR>>
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