Below is a discharge curve showing the first two full cycles on the FalconEV pack, on a CBA-II.
Before the first cycle, I used .6ah from the as-shipped charge, re-charged it, and discharged @ 2.37amps (.237c, restricted to under 100 watts by CBA II) to 34v. 2nd cycle I discharged to 33v. Both yielded @ 10.7 ah without engaging the BMS low-voltage cutoff, I think the 'recharge' on the first cycle burped in a few extra watts.
After much disappointment with NiMh ratings, I think 10.71ah on a battery rated for 10ah is pretty refreshing. I can't wait to see what it yields at a 30a discharge. I am a little sketchy on the charge time, I believe it was about 8 hours using the supplied 1.5a chargers.
The factory Andy buys from is so concerned about the other pack (damaged in shipping) that they are paying to ship it back to China to inspect it. That sounds like an organization with resources, and a commitment to quality. Andy has shipped me a replacement battery, he happened to have an extra 15ah LiMn pack, I paid extra for the 50% capacity increase.
Andy reported that the 10ah pack has a 30a BMS , but the 15ah pack has a 50a bms, and he highly recommends the 15ah pack as a minimum. I foolishly insisted that 30a would be plenty, as my Tidalforce runs at 30a in 'turbo' - which it does, except for that irksome little .2 second 47a spike on WOT that trips the 30ah BMS.
So the 15ah replacement pack will allow me to test on my TF, and the 10ah and 15ah packs can combine serial for 72v10ah@30a for my other motors. Either way, not much real-world testing I can do until the 15ah pack arrives!
- FalconEVLiMn36v10ah_2.37a discharge cycles 1 + 2.jpg
- (142.9 KiB) Downloaded 188 times
Last edited by oatnet
on Mon Sep 03, 2007 2:17 pm, edited 2 times in total.