Battery Chargers Blue Power IP67 Blue Power IP 67 charger 12/25 230V Fully encased: waterproof, shockproof and fire retardant. Water, oil or dirt cannot damage the Blue Power IP67 charger. The case is made of cast aluminum and the electronics are coated with resin. Start interruption The models with addition (1+Si) have a second current-limited output which is always powered as long as 180 - 265 V AC is available as an input. This output can be used, for instance, to prevent a vehicle from being started before the battery charger has been disconnected (start interrupt function). Highest charging efficiency ever! A new industry standard is set: with an efficiency of 92% or even higher, these chargers waste three to four times less heat. Also, after the battery is fully charged, the power consumption drops to less than one watt, which is about five to ten times better than the industry standard.