The 170/172-Series pushbutton switches are single pole, high amperage switches suitable for shallow back panel applications. These switches are momentary action and require an actuation force of 2.5 lbs. The 170/172-Series switches are equipped with a slow-make, slow-break contact mechanism and are rated at 15 amps at 125VAC.
Invinity to build 20MWh flow battery in UK
This is all about cost/energy density. Just work out how big a mechanical system would be compared to the flow battery. Unfortunately there is not...