999zip999 wrote:Can somebody find a price ?
I received this quotation:
NCM cell: 3.7V30Ah: US$32.4/set.
Graphene cell: 3.7V20Ah: US$23.6/set.
Which means 292 $/kWh
for NCM and 319 $/kWh
is there something wrong with their lifecycles chart... 400, 600, 800, 1000, 2000 in equal increments?? typo? i.e 1200??
It's look a little "invented".... First interval is 400, next ones are 200, then it's 1000....
Anyway I read a paper about NCM being capable of 4000 cycles.
NCM cells have also 180-200 Wh/kg (these cells: 205 Wh/kg) and 400 Wh/L.
1/2 cost of LiFePO4
2x life vs LiFePO4
2x Wh/kg LiFePO4
It's like saying 1/4 lifetime cost or 4x lifetime (*) vs LiFePO4 for a smaller and lighter battery
Anyway beware of ready-made "batteries
" offered by Westart! They do not look like batteries at all... They look like just groups of cells enclosed in plastic and connected to a BMS. They're very far to be acceptable as automotive batteries, which must sustain strong accelerations and vibratrions for years.
(*) In terms of total kWh delivered during lifetime.