[NSRCA-discussion] TP 1010 testing

[Dean Pappas]

Thanks Bob.
Dean

Dean Pappas
Sr. Design Engineer
Kodeos Communications
111 Corporate Blvd.
South Plainfield, N.J. 07080
(908) 222-7817 phone
(908) 222-2392 fax
d.pappas at kodeos.com


-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Robert
Mairs
Sent: Tuesday, March 28, 2006 10:51 AM
To: NSRCA Mailing List
Subject: [NSRCA-discussion] TP 1010 testing


Got tired of building this last weekend, and decided to do some testing of 
the TP1010c charger.  Debated whether to post this, but some might be 
interested.

All tests were done with the 5s3p 6000 prolites that have 90-100 cycles on 
them.

First off these packs haven't been touched since the end of september, in 
storage all winter.  So I proceeded to do a 1c charge, and then discharged 
with a cba to ck pack capacity.  They're holding up quite well with about a 
4% drop in capacity as compared to new.  1c charge was quite uneventful, 
mostly getting accustomed to the charger.  I used both the 210 and 205 
balancers, both worked well with the system.  I did order 2 charge systems, 
but alas one charger had problems and has been sent back to thunder power. 
The push buttons seemed to lock up after a few seconds.  Only way to get it 
to unlock was to power it down.  Upon reactivation it would seem alright, 
but then the problem would reappear.  This was over several attempts.

I then decided to do a 10s charge after deep cycling the pack to get a mah 
reading.  Resting voltage of the pack 34.992.

A .029 spread over the 10 cells.  Close to the .03, but the balancer said it 
was ok to do normal charge.

Charger started the initial charge for about 4 min then ramped up to 5amps 
as it got close to 37volts.  At 40volts charger went into cv from cc which 
seemed a little early??  Balancer was working pretty hard by this time.  Not 
sure at what point it was, but the alarms and bells started going off, and 
the charger shut down stating overvoltage on cell 6.  Balancer was pretty 
hot and quite active.  Not sure why it couldn't keep up, but it didn't.  Let 
the pack continue to balance out, and restarted the charge which took about 
another 400mah before pack was fully charged.  Anyways, found out the 
overvoltage feature works!  Wisdom gained, if that big of a cell spread, 
balance it out first, but I was kind of surprised this happened.  First 
because the balancer said ok, 2nd I thought the charger wouldn't ramp up the 
current until all cells were within specs, 3rd I didn't think the balancer 
would have any problem at 5amps which is only a .8c charge.



Redischarged the packs, taking out about 4500mah.  Pack voltage this time 
was at 37.26 with only .006 spread over the 10 cells.  Started the same 10s 
charge, this time uneventful til completion.  The balancer was quite active, 
but didn't heat up as the first charge did.  Total charge time was 65 
minutes and put in 4594mah.  Balancer was still active at end of charge.

cell voltage spread was .012 over the 10 cells, pack voltages were 20.86 and 
20.84.  Not sure I like the 10s feature.



Decided to try a 1.5c charge on one of the 5s packs.

Resting voltage 18.68 with a .005 spread on the 5 cells.  Set to 5cells 
9amps, fast charge.

1st 1000mah at about 7min.
2nd 1000mah at about 13min.
 at 30min was at 3.86amps, voltage at 21v.  4290mah
31min   3.2amps, 4350mah
32min   2.78amps, 4390mah
33min   2.33amps, 4437mah
34min   2.13amps, 4474mah
35min   1.75amps, 4506mah
36min   1.58amps, 4533mah
36min 52sec  charge terminated at 4554mah

cv kicked in at 20.48volts

Ending voltage was 20.85 with a .006 spread over the 5 cells.  Noticed no 
heat buildup in pack, or balancer.  Balancer showed little activity through 
out the charge.  Didn't work nearly as hard as the successful 10s charge. 
Used the 205v balancer on the 1.5c charge.

Also tried the storage discharge and charge which worked quite well.  The 
discharge came closer at 19.26 volts, can only discharge a 1amp.

Chargers quite easy to use.  I'm leaning towards the 1.5c charge with 2 
chargers.  It worked very well.  Will have to wait and see how long it takes 
to get my 2nd charger back.
Anyways that's the way it went for me for those interested.





_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion