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Old 06-08-2004, 04:39 AM   #1456
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Quote:
Originally posted by MR JOLLY
I`ll tell you why i ask this , because sunday just gone it was around 82F blazing sunshine all my batts were on the table in line waiting to be charged, they were warm to touch being the sun puts them on the charger capicty was down, peak volts went from 9.198 est down to 8.95 & they felt like they had no snap to them compared to before, & it wase`nt just the one matchers batts it was all of them.
Just wondering if i should use abit of common sense & not put them in the sun.
& the batts were getting to hot for my liking after charge.
Been using these batts for the last month racing & they did`nt feel or look happy at all.

Jolly: Yeah I have done the same thing....except it was 90+ degrees....made them feel really crappy... Keep'um in the shade.
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Old 06-08-2004, 10:03 AM   #1457
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Rod, what time will you be at the track?
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Old 06-08-2004, 10:24 AM   #1458
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Hi Neil, sometime mid-late afternoon. I'm basically going to go there to rebuild my car and wait for Frank
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Old 06-08-2004, 12:01 PM   #1459
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When is Frank showing up?
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Old 06-08-2004, 12:31 PM   #1460
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promatchrcr
Are you still intrested in the xxxs battery starp from fibre light?
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Old 06-08-2004, 02:04 PM   #1461
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I long after the Smart Tray discharges your battery should u take it off the tray? (3300GP pack)
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Old 06-08-2004, 03:09 PM   #1462
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Hi Yodace,

I usually take my packs down on a Turbo 35 to 5.4 volts, then I leave them on the Smart Tray for about 20 minutes. I don't usually let them stay on until the lights go out.
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Old 06-08-2004, 03:25 PM   #1463
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Do think leaving the batteries on until the light goes out will hurt the cells?
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Old 06-08-2004, 03:30 PM   #1464
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Thanks for the help with the order Erika.
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Old 06-08-2004, 03:30 PM   #1465
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You can leave them on until the lights go out, it just gives you a "deeper" discharge. In fact leaving them on overnight every now and then is a good idea. Testing has shown that when you leave them on the tray overnight you get the benefits of deadshorting (increased voltage) without the danger of damaging the cells.
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Old 06-08-2004, 03:36 PM   #1466
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Quote:
Originally posted by Ozwald Bates
You can leave them on until the lights go out, it just gives you a "deeper" discharge. In fact leaving them on overnight every now and then is a good idea. Testing has shown that when you leave them on the tray overnight you get the benefits of deadshorting (increased voltage) without the danger of damaging the cells.
Thanks for the info...


I left my batteries on the tray overnight on Friday then the rain came on Saturday? SHould I leave them or recharge the packs?
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Old 06-08-2004, 04:08 PM   #1467
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I want to be sure I am understanding this correctly - it is OK to leave the batteries on an EQUALIZING tray that will only take them to .9v/cell, not on a DISCHARGING tray (without cutoff) that would take them to 0v/cell - right?

Isn't it bad, very bad for a NiMH cell to be completely discharged to 0v/cell? I thought that was why it is important to be sure a discharger has a cutoff that stops the discharge.

Isn't that the difference in a discharger and equalizer - that a discharger just simulates running the car in race conditions, while an equalizing tray completes the discharge of each cell down to an appropriate voltage?
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Old 06-08-2004, 05:16 PM   #1468
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Quote:
Originally posted by rctoyguy
I want to be sure I am understanding this correctly - it is OK to leave the batteries on an EQUALIZING tray that will only take them to .9v/cell, not on a DISCHARGING tray (without cutoff) that would take them to 0v/cell - right?

Isn't it bad, very bad for a NiMH cell to be completely discharged to 0v/cell? I thought that was why it is important to be sure a discharger has a cutoff that stops the discharge.

Isn't that the difference in a discharger and equalizer - that a discharger just simulates running the car in race conditions, while an equalizing tray completes the discharge of each cell down to an appropriate voltage?
There are so many schools of thought about discharging the batts. The best thing to do is follow the instructions of the matcher where you purchased the batts.
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Old 06-09-2004, 08:18 AM   #1469
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RCtoyguy,

In my opinion you're correct. Leaving them on the Promatch Smartray overnight won't hurt anything. Other trays I can't speak for, I think the best compromise of performance and longevity comes from equalizing the pack down to .9 volts per cell.


Yodace,

I would probably take them off the tray if it's going to be a few days before you use them again.
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Old 06-09-2004, 08:28 AM   #1470
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Ozwald...email me a number I can call you at later today. [email protected] I got some questions
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