I am planning to build a 3P6S battery pack. Right now I use LG MJ1 cells. I always charge these cells to full.
With the new pack I will be charging only up to 3.92V to increase the cycles I can get out the pack. How should I size the new pack?
I chose 3.92V because I read an article frombattery university:
How much capacity am I losing if I charge the cells only upto 3.92V opposed to the usual 4.2V. The cells have nominal capacity of 3500mah.
How many cycles can I expect from the pack?
Also, I read that it is optimal to operate the battery in 85-25% SOC, is that really necessary if I don't charge them above 3.92v?
I will be pulling 15A at max from my 3P pack. Should I buy cells like the Sony-VTC6 rated for high discharge? The cells rated for high discharge should have less internal resistance and should give more cycles when operated well below their discharge capabilities. I will charging the cells at max 0.5C.
Please suggest me some good cells to build my pack.
Thanks
With the new pack I will be charging only up to 3.92V to increase the cycles I can get out the pack. How should I size the new pack?
I chose 3.92V because I read an article frombattery university:
In terms of longevity, the optimal charge voltage is 3.92V/cell. Battery experts believe that this threshold eliminates all voltage-related stresses; going lower may not gain further benefits but induce other symptoms.
How much capacity am I losing if I charge the cells only upto 3.92V opposed to the usual 4.2V. The cells have nominal capacity of 3500mah.
How many cycles can I expect from the pack?
Also, I read that it is optimal to operate the battery in 85-25% SOC, is that really necessary if I don't charge them above 3.92v?
I will be pulling 15A at max from my 3P pack. Should I buy cells like the Sony-VTC6 rated for high discharge? The cells rated for high discharge should have less internal resistance and should give more cycles when operated well below their discharge capabilities. I will charging the cells at max 0.5C.
Please suggest me some good cells to build my pack.
Thanks