Hi,
after a lot of back and forth with some aspects in my planning, I'm slowly making progress.
I'm looking for batteries for a 48v kit with at least 10KWh of capacity. Originally I planned for 16x280ah prismatic from Xuba which is nice and actually a bit more than I probably need. The alternative would be 32x105ah in a 16s2p configuration. I need to buy a 2nd BMS but I like the idea of having some redundancy in the case on trips over.
Looking at the different options out there it seems they have different energy densities:
280ah (Xuba & Haomi) - 5.2kg - 53.84ah per kg
105ah (Xuba) - 1.98kg - 53.03ah per kg
105ah (Haomi) - 2.012kg - 52.18ah per kg
152ah (Xuba) - 3kg - 50.6ah per kg
120ah (Haomi) - 2.9kg - 41.38ah per kg
so the first 3 are very similar but the 120ah one seems to be worse in terms of energy density. There are a few more where the numbers don't much up. In what sizes do they make these cells actually? Are some of them just bigger ones that just happen to not bring the full capacity (same as with CPUs)?
In this case I probably go with 105h in 16s2p as the 120ah is too much of a weight trade-off for me unless anyone has a tip for me before I'm getting crazy crunching numbers ;-)
thx
after a lot of back and forth with some aspects in my planning, I'm slowly making progress.
I'm looking for batteries for a 48v kit with at least 10KWh of capacity. Originally I planned for 16x280ah prismatic from Xuba which is nice and actually a bit more than I probably need. The alternative would be 32x105ah in a 16s2p configuration. I need to buy a 2nd BMS but I like the idea of having some redundancy in the case on trips over.
Looking at the different options out there it seems they have different energy densities:
280ah (Xuba & Haomi) - 5.2kg - 53.84ah per kg
105ah (Xuba) - 1.98kg - 53.03ah per kg
105ah (Haomi) - 2.012kg - 52.18ah per kg
152ah (Xuba) - 3kg - 50.6ah per kg
120ah (Haomi) - 2.9kg - 41.38ah per kg
so the first 3 are very similar but the 120ah one seems to be worse in terms of energy density. There are a few more where the numbers don't much up. In what sizes do they make these cells actually? Are some of them just bigger ones that just happen to not bring the full capacity (same as with CPUs)?
In this case I probably go with 105h in 16s2p as the 120ah is too much of a weight trade-off for me unless anyone has a tip for me before I'm getting crazy crunching numbers ;-)
thx