Renogy 12-Volt 30-Amp Dual Input DC-DC On-Board Battery Charger with MPPT

Designed to give you options, the Renogy 30 Amp Dual-Input DC-to-DC MPPT On-Board Battery Charger can charge a service battery in 2 different ways. The multi-stage charger can utilize connected solar panels or an alternator linked to a starting battery. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first. It's the smart way to keep yourself fully charged and off-grid longer. With multi-stage charging and multi-chemistry functionality, Renogy's DC-to-DC MPPT Charger has you covered whether you're using Flooded, Gel, AGM or Lithium batteries. Now you can unlock monitoring and control features exclusively using the BT-2 Bluetooth Module and Renogy DC Home App.*An external fuse is required for installation.