While replacing my high beam bulbs I ran across this. I have seen a lot of cars but this one has something new to me. The battery is enclosed in a sealed box. I can see gasket material on the sealing edges and there is also insulation so they took great care in designing this for some reason. On the battery box there is some kind of thermal unit identified as Honda Gentherm which I have no idea what it's purpose in life is. The first pic you can see where the box is deformed and not sealing properly at all. The second pic is the Gentherm unit. Just a heads up to check yours. Will be bringing mine to the dealer to have this corrected but in the mean time can anyone enlighten me on this Gentherm system/unit and a pretty well sealed battery box? The intake needs to come off to see this properly, just 2 big black plastic screws and the assembly pulls right off. Almost looks like they torqued down the battery retention bracket a little too much causing the deformation.
Thermal Management. With a sealed box, they can monitor the battery temp and operate the cooling fan to increase battery life. Also allows control of where the "off gassing" is vented, and may also optimize charging by maintaining a set battery temp range.