Toefin, the EFL approach is Platform technology based and as such is basically chemistry agnostic, you can read about it under Battery Modules on the company website. It seems that the 7.2 kWh unit is already for sale in Australia while the Canadian Solar website states that the 5.76 kWh unit is coming soon. Given the proximity of China to Australia, and the weight of the unit at 7.2 kWh 165 kg, 5.76 kWh 155kg, it would make monetary sense to buy from China, as it would to buy from a North American battery source for this region, yes/no? EFL covers both smaller and larger sizes of batteries. What I find interesting is that both sizes are stated to have a full charge in 5-6 hours and a longer lifecycle of over 4000 charge/discharge cycles.