From the company that claims to have the smartest battery chargers in the world comes, well, another smart addition to the Comfort Indicator series. The CTEK
Comfort Indicator can be permanently connected to your battery. If you want to check how much juice your battery has left, just push a button and a one three lights will let you know, the new Pigtail eliminates the need to reinstall new eyelet terminals on the battery or disconnect your O.E. plug if its used for other accessories.