Rivian R1S & R1T: EPA Test Documents Reveal Peak DC Charging and Power Performance

Rivian recently released EPA test documents for their R1S and R1T electric vehicles, which revealed some interesting information. The documents confirm that peak DC charging is 210 kW, there is no heat pump on the vehicles, and Conserve Mode is more efficient than Sport Mode.

The lack of a heat pump may be disappointing to some as it could improve efficiency and range in cold weather conditions. However, Rivian is currently hiring two Thermal Engineer positions which suggest they are looking into adding a heat pump to later models.

It's also worth noting that while 210 kW peak DC charging seems low compared to other models with much smaller batteries, the Rivian R1S and R1T have large battery packs so this amount of power should still provide relatively fast charge times. Furthermore, resistive heating can still provide adequate cabin warmth in colder climates and pre-conditioning helps preserve battery life when temperatures drop below zero.

When it comes to air conditioning, the compressor is run by an electric motor which turns on as needed. Heated seats do help keep passengers warm but don't do anything to defrost/defog windows at very low temperatures. This means drivers may need to use additional energy from the battery pack if they want to clear up foggy windows during winter months.

Overall, the EPA test documents show that the Rivian R1S and R1T offer good performance, even without a heat pump. While these vehicles may not be ideal for extremely cold climates, they should serve most people well who live in areas with milder winters.

The documents also confirm that Conserve Mode is more efficient than Sport Mode, which should help drivers get the most out of their battery packs. This mode limits acceleration and top speed to conserve energy but still allows for a comfortable driving experience.

Finally, Rivian's EPA test documents show that they are committed to providing an efficient electric vehicle with good performance and range. While there may be some drawbacks due to the lack of a heat pump, it appears as though these vehicles will still provide plenty of power and range for most people who live in milder climates.