3300 Battery Running Flat
#1
3300 Battery Running Flat
I have a question about the 3300 batteries for the first few minutes of the race my car is real fast then the batteries start to run real flat can anyone tell me how I can fix this problem. I'm running a stock motor and I charge the at 6 amps and discharge at 20 amps and then when they cool down I put them on a tray when the lights got out I take them of the tray.Is that how the batteries are.
#2
you may try 30amp discharge
do not tray before put away the packs
tray before charge
charge immediately after tray
do not tray before put away the packs
tray before charge
charge immediately after tray
#4
if 1 cell is cold and the rest is hot u may have a dead cell.
#5
Tech Regular
how old are these packs?? do you deadshort??? u might have lose SUBSTANTIAL LOSS of runtime... IDK
#6
Stick packs are notorious for having a "dead" or "vented" cell. The one pack I saw do the same thing, was charged the first time over the recommended charge rate (about 3 amps for NiHm, 4.5 amps for NiCd max!!!) and had been over discharged after the run. Most chargers are set to auto detect the proper amprage for charging, the adjustible ones should have the recommended range on the face or in the manual. Contact the manufacturer of the battery to be certain, but charging it at 6 amps is double the recommended rate and probably ruined the cells.
#7
Tech Champion
iTrader: (17)
Originally posted by Java1970
Stick packs are notorious for having a "dead" or "vented" cell. The one pack I saw do the same thing, was charged the first time over the recommended charge rate (about 3 amps for NiHm, 4.5 amps for NiCd max!!!) and had been over discharged after the run. Most chargers are set to auto detect the proper amprage for charging, the adjustible ones should have the recommended range on the face or in the manual. Contact the manufacturer of the battery to be certain, but charging it at 6 amps is double the recommended rate and probably ruined the cells.
Stick packs are notorious for having a "dead" or "vented" cell. The one pack I saw do the same thing, was charged the first time over the recommended charge rate (about 3 amps for NiHm, 4.5 amps for NiCd max!!!) and had been over discharged after the run. Most chargers are set to auto detect the proper amprage for charging, the adjustible ones should have the recommended range on the face or in the manual. Contact the manufacturer of the battery to be certain, but charging it at 6 amps is double the recommended rate and probably ruined the cells.
If you're looking for charging/discharging/storing proceedures, just click on the Fukuyama Racing link in my sig. and go to the TECHNICAL INFO section.
As far as a tray goes. I'd reccomend something with an auto cutoff @ .9v. I like the Rayspeed. You can get it from Steve @ www.speedtechrc.com. Novak is also coming out with what looks to be a very nice digial tray as well. As long as they have an auto cut off instead of the watching the bulbs method. If you let one cell go too long you can kill that one cell and flatten the pack.
Hope this helps.