No matter how you decide, every pack will work very well for your application.litespeed wrote: ↑Jan 22 2018 12:57amSo it's time for a new pack and pretty sure I'm ready to order next week. So if I can choose from 25R, 30Q or VTC6 which way would I want to go. I read and read and always end up confused. When I compare the cells it doesn't really end up a fair comparison since I'll buy the cells to get the amps I want. Meaning if I go 25R I'll probably go 20s15p for a 37.5 amp pack. If I go 30Q then it will be 20213p for a 39 amp pack and lastly VTC6 will be a 20s12p for a 37.44 pack. As far as current draw I'm running a QS205 and MaxE combo dumping 14kw in which ends up being about 200 amps peak. The 25R pack can hit 300 amps continuous, the 30Q can do 195 and the VTC6 leads the pack with a 360 amp continuous rating. I have read the 30Q has no problem dumping more but gets hot with continuous high levels.
Could it be that you squeezed out the 25R more as the 30?
I was talking to everyone who is interested in high lifetime and not about the last % of higher performance when using best cells.
Good idea. It should be on par than in terms of sag.
What did you do at the end? I'm going to build a new battery 20S14P and I'm very tempted to buy Sony VTC6 even if Samsung 30Q are 30% cheaper.litespeed wrote: ↑Jan 26 2018 8:58amIt would be a 195 amp pack. But if you look at the graphs on the 30Q they handle 15 amps as well as the VTC6....literally shadow the VTC6 discharge line at .02-.03 less voltage. Only thing is they can not continually handle the current past about 2.8 amps where the VTC6 goes to about 2.8 ish amps.....maybe I just go to a 20s14p to be above that 15 amp discharge......that would make the 30Q and a 20s13p VTC6 pack indetical cost? And might even out the discharge graph........
There seems to be contradictory information...
Pajda wrote: ↑May 02 2018 1:24pmSony VTC6 seems to have better cycle life than 30Q at 0.5C-1C cycle life test (Source: my personal tests) but I am now only at 250 cycles with VTC6 sample so I cannot tell you right now if it is significantly better. After comparing the prices the VTC6 is not interesting for me.
10A/cell for a good amount of time is exactly what I want to do .... so VTC6 is the way to go
I also do the same ... but sometimes during commute back to home in the night I ride on a straight road without anybody else on the road where I can drive as crazy as I can. We in Italy are pretty crazy about speed and today that I got my real motorbike I will do at least 140Km/h on that same straight that have a speed limit at 70km/h