Don’t get stranded with a dead battery!
Most people have experienced a dead battery at some point. Beyond the inconvenience, unexpected downtime can be costly—or even dangerous—depending on where it happens and whether you have access to backup power.
With a Samlex BGW Battery Voltage Protector, you don’t have to worry about excessive battery drain. This intelligent battery protector continuously monitors voltage levels and automatically disconnects loads at a programmed low-voltage threshold. By preventing deep discharge, the BGW helps ensure there’s enough power left to start your vehicle and recharge the battery via the alternator.
What is a battery voltage protector and why is it important?
Batteries are a significant investment, and repeatedly discharging them below manufacturer specifications can dramatically shorten their lifespan. A battery voltage protector—also commonly called a battery guard, battery saver, or low voltage disconnect (LVD)—is designed to protect battery health by preventing excessive discharge.
Battery voltage protectors are especially valuable in applications where electronics are frequently running while the engine is off, such as:
- Service and work trucks
- Public safety and emergency vehicles
- RVs and overlanding rigs
- Marine and boating applications
Radios, lighting, inverters, and other onboard electronics can quietly drain a battery over time. A battery protector like the BGW Series ensures those loads are disconnected before the battery reaches a critical level. This not only protects the connected electronics from over-voltage conditions, but also extends overall battery life.
Key Benefits of the BGW Battery Voltage Protector:
Extend Run-Time for Critical Electronics
Battery protectors enable load shedding, allowing non-critical equipment to be disconnected early while preserving power for essential systems.
For example, in a fire truck or police vehicle, a BGW battery voltage protector can be programmed to disconnect auxiliary lighting while maintaining power to radio communications. Multiple battery protectors can also be staged to disconnect loads at different voltage levels, extending backup time where it matters most.
Low-Profile, Waterproof Design for Flexible Installation
The BGW Series features a compact, low-profile design suited for tight spaces and engine compartments in both recreational and commercial vehicles.
- BGW-40 & BGW-60: 0.34 lbs, 2.8 × 2.4 × 1.3 in
- BGW-200: 0.65 lbs, 2.9 × 4.3 × 1.5 in
- BGW-400: 2.2 lbs, 3.45 x 8.1 x 2.1 in
With an IP66 waterproof rating and rugged rubberized polyurethane housing, the BGW battery voltage protector can be mounted close to the battery bank or in exposed environments without concern for water or harsh conditions.
Remote OFF Switch and Alarm Output
The BGW battery protector supports a remote OFF switch and an alarm output for connecting a buzzer, LED indicator, or relay. This allows users to disconnect the battery from a convenient location inside a truck, boat, or RV—without direct access to the battery protector itself.
User-Programmable Voltage Settings
The BGW Series is user-programmable with 10 selectable low voltage disconnect settings for both 12V and 24V systems. It also protects against over-voltage conditions caused by faulty alternators or chargers, automatically shutting down if voltage exceeds 16 VDC for 0.5 seconds.
Multiple Amperage Options
The BGW Series battery voltage protector is available in 40A, 60A, 200A, and 400 amp models. Depending on the size of your inverter or electrical loads, Samlex experts can help recommend the right battery saver for your system.
Real-World Applications for Battery Voltage Protectors
Work Trucks: Protect batteries when running air compressors, tools, or site lighting with the engine off.
RV & Boondocking: Prioritize critical functions like slide-ins and slide-outs by disconnecting non-essential loads such as lights, TVs, stereos, or USB chargers.
Marine Use: Prevent excessive battery discharge and reduce the risk of being stranded offshore.
A battery voltage protector helps protect connected components, extend battery life, and reduce replacement costs over time. By preventing deep discharge, the BGW Series helps keep your battery operating efficiently and reliably for longer.
Explore Samlex BGW Battery Voltage Protector options available in 40A, 60A, 200A and 400 amps. For more information or to speak with one of our experts, fill out our Where To Buy form.
