Your numbers are off. The US wants to invest that much, but has not actually done so. Meanwhile Israel has invested (or plans to, it's not clear) at least $1 billion, on R&D and a manufacturing line.
That number doesn't make sense anyway - they built 9 batteries, 2 to 4 of which Israel did before the US got involved. Each costs 50 million. 5*50 million = 250 million which is approximately what the US actually spent (rather than talked about, or planned to, spend).
That number doesn't make sense anyway - they built 9 batteries, 2 to 4 of which Israel did before the US got involved. Each costs 50 million. 5*50 million = 250 million which is approximately what the US actually spent (rather than talked about, or planned to, spend).