China’s first megawatt iron-chromium flow battery energy storage demonstration project, which can store 6,000 kWh of electricity for 6 hours, was successfully tested and was approved for commercial use on February 28, 2023, making it the largest of its kind in the world.
[pdf] Good thermal management helps keep battery systems safe. It also makes them work better and last longer. – Liquid cooling is best for big battery systems. It controls temperature well and helps batteries last longer. – Air cooling is good for small systems.
[pdf] In a battery with a balancing circuit, the circuit simply balances the voltages of the individual cells in the battery with hardware when the battery approaches 100% SOC – the industry standard for lithium iron phosphate is to balance above a cell voltage of 3.6-volts.
[pdf] 
