adam_mk wrote:
And who's buying it? - this price list is probably for show and sucked from the finger. It doesn't pay off at all.
The Chinese will buy the same NiFe 48V 400Ah for about 8000 dollars, but you have to take the whole container.
Currently, for example, for $8,000 you can assemble a 48V 400Ah battery based on LTO technology (lithium titanium batteries). Main features: 30,000 cycles (80-100 years of operation with a slight loss of capacity) - work up to -30, charge at sub-zero temperatures, low self-discharge, light, can peak at 15C. Full charge in < 10 min. The total weight is about 250 kg.
For about $1,500, you can rip a wrecked car battery with a similar capacity, but unfortunately with some disadvantages related to low temperatures and 5x shorter life. Of course, this is the price in the USA - there is not very cheap transport to the EU, but there will be more and more of it (in 2-3 years) and in Europe at a slightly higher price. Least effort to run it. The problem is the small offer of inverters that will turn 400V DC into 240AC. But the package can be taken apart and make your own configuration.
Acids are super expensive because they are replaced too often.
Martin