The cells was easy to solder, You can improve the solderings abit if you use sandpaper as usual.
Schulze ISL6-330d used slightly modified for 10A
All charge cycles was made using 2A
Same battery pack was used, 8 cells in series, here we go:
0 Charge 100mA 20hr, prep brand new cells. (13 Jan 2007)
1 Discharge at 1A = 1405mAh, 1350mAh to 9V and additional 55mAh to 7V
2 Charge at 1.5A = 1466mAh
3 Discharge at 1A = 1367mAh, 1319mAh to 9V and additional 48mAh to 7V
4 Charge at 2A = 1460mAh
5 Discharge at 1A = 1336mAh, 1293mAh to 9V and additional 43mAh to 7V
6 Charge at 2A = 1445mAh
7 cool down 2hr
8 Discharge at 100mA = 1344mAh
See colder cells perform bad, quite normal for NIMH
Lets go to hi power
both of the following cycles was charged with 2A, and directly after discharged.
9 Discharge at 10A = 1413mAh to 1V pr cell
10 Discharge at 10A = 1402mAh to 1V pr cell
Cycle 1 discharge
Cyele 3 discharge
Cyele 8 discharge at 100mA show only 1344mAh, a bit low for a 1500mAh pack.
here is a 10A discharge curve, the current and the mAh are x 10
I made two cycles of each type battery, to see the difference.
The Elite pakage give more voltage = more power and the elite pakage runs colder both on charge and discharge at hi currents.
if you normally would need a 10 celle IB1400 pack, now you can use Elite 1500 but you only need 9 cells,
to be able to give the same power, but even for longer time and 10% less weight with Elite 1500.
elite1500-vs-ib1400.xls download the EXEL sheet if you like
Looks good together with some of my other 2/3 A flight packs.
-Thomas Scherrer, OZ2CPU, January 2007-