Lithium Disconnects

The Lithium Battery Guardian Auto (LI-BGA)

allows you to remotely disconnect the vehicle from the battery. Prevents battery drain during storage while eliminating the cumbersome task of physically removing the battery cable from the bank of batteries. While in BGA mode, automatically disconnects the vehicle from the battery if it senses low voltage conditions, but with owner override capability. Automatically re-connects the vehicle to the battery if it senses a charging voltage condition.

Product Features and Function

The Battery Guardian Auto draws no current in the On or Off state.

Current Ratings:

160 Amps continuous, 600A cranking. (Part # 00-10041-400)

225 Amps continuous, 1200A cranking. (Part # 00-10041-450)

Ignition proof: SAW J1171

Waterproof: IEC 60529, IP66 IP 67, ASTM B 117 96 hours salt spray

Approved for battery compartments

Single wire operation 

Microprocessor-controlled internal coil:

No external fuse

Prevents coil damage from “sticky switches”

Prevents accidental disconnect if ignition signal is detected

Weight: Under 1 pound


The Battery Guardian Auto opens and connects the two 5/16” copper terminals by means of a sliding contact. There are 3 states, Off-Disconnected, On-Disconnected, and BGA-Connected with Auto, whereby the device will disconnect when it senses low battery, and reconnect when it senses charging. Cycling the switch Off & On will also reconnect the relay. The Battery Guardian Auto remains in the On or Off state, without coil power.


The BG AutoSelect is a cross between a BD and a BG and works with a 3-position Rocker Switch: On, Off, and Auto.

In the On or Off position, it works like a BD. In the Auto position, it works like a BG.


Wiring Diagram by Part #’s

00-10041-400 – 160 AMPs

00-10041-450 – 225 AMPs