Battery Doc

About Battery Doc by WirthCo Engineering

Battery Doc is the portable charger and maintainer sub-brand of WirthCo Engineering, Inc., the Minneapolis, Minnesota-based manufacturer behind the well-known Battery Doctor® product family. Battery Doc products sit at the intersection of everyday practicality and precision engineering — built for automotive enthusiasts, RV owners, marine operators, farmers, and industrial professionals who need dependable 12-volt battery solutions.

WirthCo Engineering has been designing and manufacturing battery accessories and electrical management products since 1980. Now well into its fourth decade of operation, the company holds a growing portfolio of patents that reflect its commitment to innovation in the battery accessories space. Its products are built in the United States and trusted by some of the world's largest distributors and retailers.

What sets Battery Doc apart is the breadth of its ecosystem. Whether you are building a custom battery package for an off-road rig, wiring up a boat, maintaining an RV in storage, or simply protecting a daily driver from a dead battery, Battery Doc covers the full spectrum of electrical management needs. Battery terminals form the foundation of any reliable electrical connection, and WirthCo's engineered terminal designs — backed by patented technology — ensure secure, corrosion-resistant contact between battery and vehicle.

For those who need to protect their electrical system from overcurrent events, Battery Doc's lineup of fuse blocks and fuses delivers organized, code-compliant circuit protection for everything from standard automotive wiring to complex multi-circuit marine and RV builds. The brand offers fuse holders, fuse kits, and LED fuse accessories designed to make installation and diagnosis straightforward.

One of the most popular reasons enthusiasts turn to Battery Doc is for power management. The brand's battery disconnect switches — available in master, keyed, and rotary styles — protect against electrical fires, parasitic drain, and theft by providing a reliable way to cut all power to a vehicle or piece of equipment. For off-grid and seasonal applications, Battery Doc also offers solar powered chargers that keep batteries topped off and healthy without requiring a wall outlet or manual intervention.

From a single replacement fuse to a complete battery management solution for a dual-battery truck build, WirthCo Engineering's Battery Doc line offers the depth and quality that professionals and hobbyists alike have relied on for decades.