Canadian Solar http://www.canadiansolar.com/category/pv-energy-storage.html

5.76 kWh, LiFePO4 cathode and 155 kg = 37.2 Wh/kg

Daimler https://schlauerspeichern.de/

2.5 kWh module, NMC cathode and 28 kg = 89.3 Wh/kg

Even if LiFePO4 provide less energy density than NMC should not be such low, any error in Canadian Solar specs ?

Not a big deal for small unit but for large storage unit (MWh scale) ...