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Old 05-06-2006, 09:12 AM   #1
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Default Another boring Cell question but here goes...

I have a race Monday, the schedule is as follows

Nicads 2000 Mah 7.2, Stock mabuchi Motor

Qualifications in the morning and afternnon finals

Should I charge ll my cells up at 5 amps Sunday night and top up before I race Monday or should I discharge all sunday and charge them up on the day; or should i do none of the following and get the Nitro out with and put 7 silencers in a row so people wont know its not electric

Cheers
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Old 05-06-2006, 09:49 AM   #2
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Quote:
Originally Posted by TRFTIM
I have a race Monday, the schedule is as follows

Nicads 2000 Mah 7.2, Stock mabuchi Motor

Qualifications in the morning and afternnon finals

Should I charge ll my cells up at 5 amps Sunday night and top up before I race Monday or should I discharge all sunday and charge them up on the day; or should i do none of the following and get the Nitro out with and put 7 silencers in a row so people wont know its not electric

Cheers


ALWAYS charge the day of the race...PERIOD!

Your batteries will feel peppier and finish stronger. That applies to both NICAD and NIMH.

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Old 05-06-2006, 09:52 AM   #3
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put a couple of cycles in the packs before you run them....get some heat in there! You actually want the battery to finish charging literally seconds before you have to out on the track. That gives you the most available voltage and punch.
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Old 05-06-2006, 10:00 AM   #4
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put a couple of cycles in the packs before you run them....get some heat in there! You actually want the battery to finish charging literally seconds before you have to out on the track. That gives you the most available voltage and punch.
Ok so if I cycle 2 packs Monday morning so they are charged and then discharged I then charge them Monday PM.

Should I use some cooling fans to cool the cells when charging or dishqrging ?

So I should Discharge all my cells Sunday and charge them up Monday?

Thanks for all being patient.
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Old 05-06-2006, 10:41 AM   #5
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Quote:
Originally Posted by TRFTIM
Ok so if I cycle 2 packs Monday morning so they are charged and then discharged I then charge them Monday PM.

Should I use some cooling fans to cool the cells when charging or dishqrging ?

So I should Discharge all my cells Sunday and charge them up Monday?

Thanks for all being patient.
Cooling fans are good on the discharge, but when charging it is better to let them get to whatever temp / peak cut-off you have set (generally 125 degree's) to allow the chemical reaction of the battery function its best.
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Old 05-06-2006, 02:37 PM   #6
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You need to spend some time here searching and also reading the SMC website.

You never charge batteries any other time than right before you use them. Do not charge in the morning and then repeak that night. You will be training your batteries to perform flat. Start charing them 45-35 minutes before your heat.

After the race, discharge them and leave them discharged until your next race. If you have a tray, put them on there and let them discharge for as long as you can. Storing Nicads empty is a GOOD thing to do!

These are NiCad so if you cycle them, cycle them no closer than several days before the race.

Do not worry too much about fans. If you use one, use it on the discharge part of the cycle and not the charge.
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Old 05-06-2006, 04:43 PM   #7
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the ONLY time ill charge the night before is "1" practice pack so I have something to get on the track right away.

Some friends started charging their batteries while driving to the track using the cig lighter and a convertor to plug in the charger ;-) since most of the people i know drive at least 30~60 mins to the track. heh.
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Old 05-06-2006, 05:05 PM   #8
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Sounds like these are probably stick packs, so you should also consider getting a battery "bug" or two. They are small discharge devices that take your back down very slowly to I think 0 volts. You would put this on the battery after you discharge to 5.4 at a high amperage discharge rate. Leave this thing on there untill 20-30 minutes before you are going to charge the pack.
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Old 05-06-2006, 05:12 PM   #9
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for example you've stored all your packs for long perid and then now its saturday and then the monday will be the race day..

for me on this day
eg. saturday= i will discharge all my packs to 0.9v per cell. then charge it and then use it or discharge it again to 0.9v per cell( by doing this you can wake up your cells due to the long stocking period of time)

sunday= rest the packs to

monday race day = charge the cells on the track, not in your home coz u wont get the full potent of your packs,, charge your cells into the track then when the pack is fully charged,, u can use it right away, and you'll be satisfied w/its punch and power... hope this helps...
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