Team Wave - Lightning Discharge / equalizing system
04-14-2006, 03:37 AM
#151
Tech Fanatic
Originally Posted by BrainTeased
i was under the impression that the team waves hold their cells down to the selected voltage cut off but in fact it doesnt. its pretty much just another novak smart tray but with a fan.
According to the product profile it is supposed to hold the voltage at the cutoff level.
04-14-2006, 05:01 AM
#152
Originally Posted by Hyper1
According to the product profile it is supposed to hold the voltage at the cutoff level.
Maybe you have to use higher XDL for this function to really work.
But anyway Iīm not completely sure how this XDL works. Maybe itīs just a function of time and each of the XDL levels is a fixed amount of time. Maybe itīs dependent on other things also until it finally cut off.
04-14-2006, 05:28 AM
#153
Tech Adept
With a higer XDL, the discharge current decrease in order to maintain the selected cutoff voltage.
I use a lowvoltage like 0.7/0.8V and and XDL=5/6 with GP cells and high voltage 0.9/0.95V and XDL= 8/9 with IB cells
I use a lowvoltage like 0.7/0.8V and and XDL=5/6 with GP cells and high voltage 0.9/0.95V and XDL= 8/9 with IB cells
04-14-2006, 05:40 AM
#154
But from what I have heard you shouldnīt use a high XDL value with IB cells. The discharge current may decrease more but I think it also will affect keeping the cells at a voltage which isnīt good for them.
04-14-2006, 05:52 AM
#155
Tech Adept
You're right, I use 5/6 with IB and 8/9 with GP, just a brain problem!! 
In fact with GP cells, I often use XDL=6/7 during races because with higher value it can take long to discharge the pack!
In fact with GP cells, I often use XDL=6/7 during races because with higher value it can take long to discharge the pack!
04-14-2006, 11:52 AM
#156
Tech Rookie
Problem
Hi
Has any one had this go wrong as i used the tray fine last week and today the 1st and 6th cell do not discharge any more.I looked through the top and the board had burnt out at the cells on the top of the board.Where the cell join together.
Thanks
Has any one had this go wrong as i used the tray fine last week and today the 1st and 6th cell do not discharge any more.I looked through the top and the board had burnt out at the cells on the top of the board.Where the cell join together.
Thanks
04-14-2006, 03:42 PM
#157
Tech Adept
Didn't have that problem, but sometimes I try to discharge it, and it doen't discharge 1 cell... when I put in another battery pack.. it does work normal.. 
After leaving the pack for a few minutes, it's fine again.. strange...
-Hugo
After leaving the pack for a few minutes, it's fine again.. strange...-Hugo
04-14-2006, 05:06 PM
#158
Tech Regular
Originally Posted by zombie
Hi
Has any one had this go wrong as i used the tray fine last week and today the 1st and 6th cell do not discharge any more.I looked through the top and the board had burnt out at the cells on the top of the board.Where the cell join together.
Thanks
Has any one had this go wrong as i used the tray fine last week and today the 1st and 6th cell do not discharge any more.I looked through the top and the board had burnt out at the cells on the top of the board.Where the cell join together.
Thanks
look on the board and you will see the lines on the pcb that is where the current flows. you will see areas where the short occured the board coz the lines on the pcb will flake off. just reconnect the flow, by soldering a wire in between.
if you post a pic of your PCB i will explain it better.
04-15-2006, 05:47 AM
#159
Originally Posted by Hyper1
According to the product profile it is supposed to hold the voltage at the cutoff level.
But as each cell was done the voltage in the pack would start to get higher and higher until all cells were discharged the pack returns to 7.2+ volts within a matter of seconds.
04-15-2006, 06:18 AM
#160
Tech Adept
Originally Posted by BrainTeased
hmmm well i hooked up a volt meter to each ends of my pack and watched it discharge and i noticed every time a cell showed it was "done" (discharged to the choosen voltage) the voltage in the pack would start climbing up again, very slightly.
But as each cell was done the voltage in the pack would start to get higher and higher until all cells were discharged the pack returns to 7.2+ volts within a matter of seconds.
But as each cell was done the voltage in the pack would start to get higher and higher until all cells were discharged the pack returns to 7.2+ volts within a matter of seconds.
-Hugo
04-15-2006, 06:22 AM
#161
Tech Regular
Originally Posted by BrainTeased
hmmm well i hooked up a volt meter to each ends of my pack and watched it discharge and i noticed every time a cell showed it was "done" (discharged to the choosen voltage) the voltage in the pack would start climbing up again, very slightly.
But as each cell was done the voltage in the pack would start to get higher and higher until all cells were discharged the pack returns to 7.2+ volts within a matter of seconds.
But as each cell was done the voltage in the pack would start to get higher and higher until all cells were discharged the pack returns to 7.2+ volts within a matter of seconds.
not sure on the exact algorithim, but would go something like this.... (say you set the tray to XDL=9 and 0.9v)
1) discharge to 0.9volts at 5amps
2) when cell reaches 0.9volts decrease to 4.5amps
(NOTE: the drop in the discharge rate will allow the cell to rebound above 0.9v a little)
3) when cell reached 0.9volts again decreas to 4.0amps
(NOTE: the drop in the discharge rate will allow the cell to rebound above 0.9v a little)
4) when cell reached 0.9volts again decreas to 3.5amps
.
.
.
etc
.
when cell reaches 0.9volts again decrease dishcarge rate to 0.1amps
when cell now reached 0.9volts @ 0.1amp stop discharging the cell.
change the display to DONE.
or put more simply. its like discharging at 5amps, when it reaches cutoff, lower the amperage then re-discharge.
i cant see how it is possible to hold a cell infinitly at 0.9volts like you guys suggest. there is only a certain amount of energy in a cell. there has to be a point at which it has to stop. (otherwise you may aswell take it down to 0 volts and deadshort it) and at 0.1amps discharge is very very slow discharge rate. thats about 0.1mah every minute?
and yes all cells rebounds to their natural levels 1.2v once they are discharged and are allowed to rest.
Last edited by XingXing; 04-15-2006 at 06:39 AM.
04-16-2006, 03:32 AM
#162
Originally Posted by hugovdb
Thats correct.. What I do is just before Charging the pack, I put it back on the lightning again...
-Hugo
-Hugo
Xing Xing
i know what you mean i actually set mine at 0.85 volt per cell and a rating of 5 with the XDL setting. it almost gets all the cells holding at 0.85-0.9 volt for a while
04-24-2006, 05:47 AM
#163
Tech Initiate
Has anyone noticed that there is a calibration menu? Just scroll to "setting" and press both left and right scrolling buttons at once. Mine displays 9<:8<8.
05-02-2006, 09:03 AM
#165
Tech Apprentice
