[NSRCA-discussion] TP 1010 testing

[Steven Maxwell]

 Good work Robert.
 Thanks

Steven Maxwell
 
 


> [Original Message]
> From: Robert Mairs <robertm at sssnet.com>
> To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
> Date: 3/28/2006 10:51:22 AM
> 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.
>
>
>
>
>
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