electricbike
100 W
First test uppdated 660 cycles.
How did you got this one?eTrike said:Total loss vs rated capacity = 24.6%
parabellum said:How did you got this one?eTrike said:Total loss vs rated capacity = 24.6%
Offroader said:I'm going to run some tests on 3500 MAH cells soon.
What I think I will do differently is every 40-50th cycle I will run a single charge/discharge (4.2volts to 2.5volts) at an extremely low rate like .25 amp charge .5 amp discharge to be able to graph the results more accurately and to be better gauge exactly how much capacity is in the cell.
So the first charge/discharge at .25/.5map should be around 3500MAH, then the 40th at that rate will be something like 3450MAH. So You can exactly see what is in the cell.
I will charge exactly to 4.2 to 2.5 or whatever voltage it takes to get 3500 MAH on the 1st cycle, then the 40th cycle will do the same exact 4.2 to 2.5 volt cycle.
DrkAngel said:(INR18550-25R)
Be aware that a 4.20V to 2.50V (@20A) might discharge cell to a static 3.40V (effectively "empty") for the full rated 2500mAh.
Discharging to the same 2.50V at (@.25A) might discharge to a very damaging, for minimal additional capacity, static 2.55V?
Link to a typical discharge graph? ... can estimate probable static "empty" voltage.
Read "Legend".madin88 said:what was the difference between black (or is it very dark blue?), and blue curve?
2,5A vs 5A, but was charge and discharge voltage identical?DrkAngel said:Read "Legend".
Lower left in graph.
electricbike said:Just got 4 29E cells from a ES member that i will start some cycle test at in the next week.
2 more chargers ordered also.
Will start a new topic on those cells.
Me too!Wheazel said:Very much looking forward to this!
Wheazel said:electricbike said:Just got 4 29E cells from a ES member that i will start some cycle test at in the next week.
2 more chargers ordered also.
Will start a new topic on those cells.
Very much looking forward to this!
Where in Sweden are you located?