[NSRCA-discussion] TP 1010 testing

[Ken Thompson]

Great info Bob, thanks for all your work.


----- Original Message ----- 
From: "Robert Mairs" <robertm at sssnet.com>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Tuesday, March 28, 2006 10:51 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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