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Old 07-22-2004, 03:43 PM   #316
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The cells get pretty hot after a charge, I'd rather they were allowed to cool instead of being given a trickle charge that will keep them hot. There may be other reasons to avoid it too.

The torpedo charge - boosting charge - it for cells that have been left after charging, to top them up - it is a short discharge, followed by a peak charge. Not an essential feature IMHO.
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Old 07-22-2004, 05:47 PM   #317
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Allright, thanks. The cheapest ive found it in the U.S. besides HK is at 165, ultimate hobbies. Its a pretty good price
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Old 07-23-2004, 03:25 PM   #318
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Quote:
Originally posted by bballer
Since im just racing touring, the cell amount wont bother me, and whats so bad about the trickle after charging? I heard the the v6 had a torpedo charge too. Can you tell me anything about that?
Almost every matcher reccommend to NOT trickle charge GP3300 cells.... (or any NiMh for that matter...)

I'm using the V6 as well, and are very satisfied. I can only recommend it. The battery data is very usefull for matching batteries. Get 3-4 packs at once. When they flat out, re-match.

But if you're on a tight budget, consider the LRP Pulsar Sport - it can be found for 100$. It wont discharge, but charges well.... Eventually you can combine with the Rayspeed equalizer for discharging later on...
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Old 07-23-2004, 03:41 PM   #319
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Thanks for the help guys, i think ill get a v6 and be satisfied
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Old 07-23-2004, 03:59 PM   #320
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btw, kind of weird question, but i will be looking for a power supply, probably will get one off ebay or make one myself . I know i must get a ps that has more than 7 amps, but since the discharge is 20amps, will i have to have a ps that is more than 3o amps??? Thanks for the help
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Old 07-23-2004, 04:20 PM   #321
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Quote:
Originally posted by bballer
btw, kind of weird question, but i will be looking for a power supply, probably will get one off ebay or make one myself . I know i must get a ps that has more than 7 amps, but since the discharge is 20amps, will i have to have a ps that is more than 3o amps??? Thanks for the help
my Indi power supply is only 14amps...and it discharges at 20amps with no problems.

If you plan on getting a second charger in the future..14amp PS is recommend.
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Old 07-23-2004, 04:34 PM   #322
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Thanks, i won't need another charger, but if i need to charge my receiver batts or something while im charging the packs i can just use my prophet plus ac/dc
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Old 07-28-2004, 04:13 PM   #323
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Now my charger backlit has faded It's still on, but very low, almost useless... Have anyone experienced this? I think I saw somewhere it's just opening the case and disconnect a connector and then connect it again. Is that correct? But warranty....
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Old 07-29-2004, 01:17 AM   #324
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Yep, my backlight went the other day after about 1 year's use... haven't opened up the case or anything though, I can still read it.
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Old 07-29-2004, 02:21 AM   #325
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This morning, my back light is working fine again ???

The light aint the best at our pit, so I really like the back light...

By now, the temperature is going up in our country. So indoor environment is often 24-25 degrees celsius (75-77 deg. F). In this case my GP3300 peaks at 71 degrees celsius (160 deg. F). It was with 7 mV pr. cell cut off and 6 amps. Tonight I'll try with a lower cut off, but I'm not optimistic, since I recently tried the same with Sanyo 3000 HV, but with almost no decrese in temperature.

I tend to say that this charger pushes the cells too hard. The tonight experiment will judge. Depending on the result, I'm close to sell this charger, while I can still get a good price for it, since there's still 1 years warranty left.
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Old 07-29-2004, 01:30 PM   #326
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Default Heat problems solved

I'm now charging at 6 amps and with 3 mV delta cut off. I also ensured there's reasonably airflow around the pack (no fan). So now it comes off the full charge at 60 deg celsius / 140 F. The ambient temperature is 26 C / 79 F. This is for my GP pack.

I'm in the process of testing my Sanyo 3000 HV. 5 amps and 3 mV.
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Old 07-29-2004, 04:56 PM   #327
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Default Re: Heat problems solved

Quote:
Originally posted by Cole Trickle
I'm now charging at 6 amps and with 3 mV delta cut off. I also ensured there's reasonably airflow around the pack (no fan). So now it comes off the full charge at 60 deg celsius / 140 F. The ambient temperature is 26 C / 79 F. This is for my GP pack.

I'm in the process of testing my Sanyo 3000 HV. 5 amps and 3 mV.
how much mah does the pack take in after the charge with those settings. my experience before is with a low 3mV delta it doesn't put in as much charge as my normal delta settings of 4-5mV, but it does help with the temps. got myself a pulsar and the packs come out cooler than with my cdc. I agree that the cdc pushes the packs too hard but its great for stock racing very punchy packs.
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Old 07-30-2004, 02:16 AM   #328
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The difference in mAH put into the pack, dont change... Besides, I count more on the mAH taken OUT of the pack.

Here's some detailed data:

I've just finished the cycling of a Fukuyama pack.

I follow the Fukuyama recommendations about maintenance.

The pack is 1.160-1.164 six cell. It was bought 31. march.

After 3 times raced in the car, I cycled it to get some data. Here they are:

3.972 mAH charge, 3.185 disc.
Average voltage: 6,944.
IR: 32 mOhm.

12 times raced in the car, and the 1 above cycle (13 total), the data looks like this:

4.018 mAH charge, 3.119 disc.
Average voltage: 7,082.
IR: 29 mOhm.

I always charge them at 6 amps.

I'm using an Eagle CDC v 6 charger and a Robitronic equalizer with 0,8 volt cut off and 1 amp discharge rate.

One difference between the two cycles though: Environment temperature at first cycle, was 21 deg. C (70F), at the second it was 26 (79F). Thus the delta cut off at first was 8 mV pr. cell, now 3 to keep the final temperature reasonably (60 deg C/140F).

If this affect the data, I dont know.
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Old 07-30-2004, 04:19 AM   #329
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Hey Guys.

Well i just ran one of my packs thru.

E3844
Peak 9.081
ir 32

Disc 3025
Ave. 7.11
ir 31

Glenn
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Old 07-30-2004, 04:46 AM   #330
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Quote:
Originally posted by Mr-s413bt
Hey Guys.

Well i just ran one of my packs thru.

E3844
Peak 9.081
ir 32

Disc 3025
Ave. 7.11
ir 31

Glenn
Which Surge cells? Voltage, price, thanks.
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