The Sterling Pro Charge B is a 12V DC to 48V DC multi stage charger, which is IP68 protected and fully automatic. Perfect for when you want to power up fast. Faster than a standard charger, the Sterling Pro Charger B can power up Lead Acid (Flooded) or Gel batteries. Perfect for small boats with reverse polarity, ignition and temperature protection Quick to charge Prewired Fast and easy to install Submersible up to 1m Great for Dual motor systems Intelligent 4-stage battery charger keeps batteries in top condition Keeps enough power in your start battery to restart your engine Can be permanently mounted or temporarily installed Charge status and power LED indicators