Geothermal pools and hydrothermal vents Are the closest thing to Venus like conditions.
At 400 degrees Celsius, Venus runs at temperatures of 465 Celsius. However the oceanic depth and pressure prevents any boiling of the super heated water, at 10,000 feet deep, the vents exist at 300 times atmospheric pressure (3x that of venus atmosphere) however there's a layer of cold ocean water pressing on those vents. As they pour out of a vent, the fluids encounter cold, oxygenated seawater, causing another, more rapid series of chemical reactions to occur.
A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For example, water boils at 100 °C (212 °F) at sea level, but at 93.4 °C (200.1 °F) at 1,905 metres (6,250 ft) altitude. For a given pressure, different liquids will boil at different temperatures.
Venus is dry, because without water there's no universal carrying fluid for metabolism or dissolving of organic materials. Organic molecules require lower temperature condditions to create organic substances like proteins or DNA. Even with Venus high pressure; water boils at 365 degrees celsius. Venus is simply too hot for water; thus too hot for living things. Based on fundamental life chemistry water is the universal solvent and carrying fluid.
Why simulate an environment as noxious enough to digest a battery