This product is designed for evaluating battery performance under controlled conditions, featuring a stainless steel and PTFE construction that ensures reliable sealing across various organic electrolyte systems, including lithium-ion, sodium-ion, and solid-state batteries. The mold accommodates electrode material customization and supports pressure testing of solid-state electrolytes, making it suitable for advanced battery research applications. With a compact and flexible design, the WJG-10-20 allows easy disassembly and assembly, while the 10-20 mm diameter range (three molds included) provides versatility for coin-cell-type testing. This fixture is particularly relevant for researchers needing precise, reproducible electrochemical measurements in experimental setups.