Hi all, I'm on my way to building my own custom light EV... timeline TBD.
I'm at the early stages now and comparing KWh of different battery options. However I'm not sure if all stated capacities are apple to apples in comparison. The question comes down to whether the capacity refers to the difference between maximum safe voltage and minimum safe voltage, or the difference between maximum voltage down to zero volts, so that they can unrealistically inflate their marketing material.
Either one is "fine" as long as it is at least followed by all players involved. I just want to know what it is.
The two options I'm currently considering are the LiFePo4 cells from Chinese sources like these: Aliexpress Lifepo4 280Ah
... or on a totally different level, one battery module from a Tesla Model 3 LR (assuming it can be properly integrated atm). If the M3LR has 82KWh and one module is basically one quarter of that then can I expect about 20KWh of usable capacity?
If there is a way to know how to compare these apples to apples I'd like to hear it.
I'm at the early stages now and comparing KWh of different battery options. However I'm not sure if all stated capacities are apple to apples in comparison. The question comes down to whether the capacity refers to the difference between maximum safe voltage and minimum safe voltage, or the difference between maximum voltage down to zero volts, so that they can unrealistically inflate their marketing material.
Either one is "fine" as long as it is at least followed by all players involved. I just want to know what it is.
The two options I'm currently considering are the LiFePo4 cells from Chinese sources like these: Aliexpress Lifepo4 280Ah
... or on a totally different level, one battery module from a Tesla Model 3 LR (assuming it can be properly integrated atm). If the M3LR has 82KWh and one module is basically one quarter of that then can I expect about 20KWh of usable capacity?
If there is a way to know how to compare these apples to apples I'd like to hear it.