VentPlus VP1211 Innovative Modular Versatile Permanent pressure compensation due to temperature differences or varying altitude (e.g. mountainous terrain or air freight) Dust & water tightness to protect the battery system in case of water wading and high-pressure or steam jet cleaning Automatic emergency degassing in case of a malfunction of the battery (e.g. degassing of cells) Prevention of access to the high-voltage components even after a fire (intrinsic safety)