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Old 10-10-2002, 03:44 PM   #31
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Hey guys I've tried 6amp .03 cut oof 6amp repeak .02 cut off. Can't get more than 353 sec. at 30amp or more than 6.33v ave. disch. resistance is low, but I have no idea what to do. Pack has about 4 runs 1 cycle on turbo 30. Any suggestions. I've got a zapper,but I'm thinking it might be too soon to to that. It's a trinity pack so I'm a little uneasy about it. Any ifo. would be greatly appreciated!!!!--Al
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Old 10-10-2002, 03:53 PM   #32
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Quote:
Originally posted by Hobbytown Racer
I have 2 new packs of GP's that I finished assembling. I'll be racing 19T sedan with foams on carpet tomorrow. Would you recomend cycling the packs today, or just charge and run them when I get there?? I'm thinking that cycling them today will wake them up so to speak. Any thought's??
Greg,

Don't cycle the packs. Run them at least 4 times before you cycle them.

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Old 10-10-2002, 04:07 PM   #33
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Eesh, hope my results are better. Just ordered 3 trinity "race" packs a couple days ago.
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Old 10-10-2002, 04:10 PM   #34
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Madqeazl-- 1 word for you...PROMATCH.. they offer great cells at a great price.
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Old 10-10-2002, 04:16 PM   #35
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I totally agree with you, I've used their batteries before. Good prices and good cells. The track we had in Yuma AZ ran a point series and items that we could pick from were batteries and motors from Promatch. Think I had about 7 of his packs and was very happy. The only reason I went with the Trinitys was because I just made a rather large order from Tower and was trying to keep it all together. I've ordered all kinds of other junk no so it didnt really matter in the end though, probably should have just gotten his batts again. I only ordered 3 though, will need plenty more. Plan on driving out from Yuma (when I get back home) and running at SoCal once a month hopefully.
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Old 10-10-2002, 05:36 PM   #36
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Promatch all the way. Jeff stands behind every product he sells
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Old 10-13-2002, 09:03 AM   #37
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Well,I've done a little more work on these batts. I finally got a ave disc. of 6.88v @ 20 amps and relative resistance of 159. Assuming these #'s stay this would definitely be the best pack I've ever owned. We'll have too see. I tried charging from 4-6.5 amps and found the best overall to be 5 amps .03 threshold and .02 repeak. How high of a peak voltage are you guys getting? Mine seems to peak aroud 9.06-9.12. Seems low,but I've only used nicads until this pack. Let me know. Thanks--Al
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Old 10-13-2002, 08:54 PM   #38
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i have one pack from world class and one from trinity and after 2 runs on the track i cycled them. I always charge at 5 amps w/ a .02 peak detect and .01 on re-peak, discharge at 20 amps w/ a 5.4v cutoof

world class (20 amps)
runtime - 599
IR - 106
voltage - 7.04
mwhr - 3327
peak voltage (charge) - 9.07

trinity (20 amps)
runtime - 603
IR - 109
voltage - 7.02
mwhr - 3350
peak voltage (charge) - 9.09
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Old 10-14-2002, 05:36 AM   #39
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Can someone please tell me what is relative internal resistance? I have a home-made battery tester which gives the resistance out in mOhm, but how can I compary that to this relative number?
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Old 10-14-2002, 02:04 PM   #40
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Thanks for the info shrekair! I can't seem to get the runtime past around 529!!?? I'm hoping a couple of runs during practice will wake this pack up. You've got crazy voltage on bothpacks. I guess I'll have to keep croosing my fingers--Al
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Old 10-14-2002, 03:15 PM   #41
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JesseT, the relative internal resistance is a calculated number that Competition Electronics used. It is made up of a couple of different factors, one including the peak voltage. Sorry I don't have the complete specifics on it but they don't use it anymore.
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Old 10-14-2002, 07:50 PM   #42
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big al - i hope you dont just have sour packs
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Old 10-14-2002, 08:58 PM   #43
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Hey guys,Ihear that the 3300 don't last as long as umh or hv.What I mean by last as long is(they will not put miles on like the umh or hv).Kinda like buying a Chevy over a ford.I hope you guys see what I mean?

Your constructive comment comes next.
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Old 10-15-2002, 06:12 PM   #44
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Not lasting long?????????

I would like to know where you came up with this one as the 3300 battery has only been on the market for a month or 2 now so how can you say that they dont last as long as UMH's and HV's that have been on the market for a year already. I dont see how there has been enough time to make this kind of statement.
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Old 10-15-2002, 06:43 PM   #45
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I have two packs, been running them weekly for about 8-9 weeks now.

The runtime is down to 540sec at 20A, from 610. The IR is still super low, around 19-19.5mOhm's, and the voltage is the same at 7.07-9.

90% of these runs were in mod sedan, 8-9T on carpet with foams. Some 19 sedan, offroad, etc. I never ran them within 4-5 hours of the last run, 5A chg, .02 detect, discharge to 6v after the run, never trayed, no bench cycling. They were built, ran a couple times, cycled for #'s, then ran on the track for 8weeks. The cycled to again to check on them. I could feel the lack of runtime on the track.....began feeling soft like the Ultras did toward the end of the run.

For comparison, 2 packs of Ultras that were new at the same time, Have gone from 540+ packs, to 515-20. Voltage and IR the same. Treated the same as the GP's, with similar amouts of track time.

Hopefully the final production cells with the rainbow shrink will be more robust.
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