Samlex Waterproof Battery Guard - 200 Amps
Samlex Waterproof Battery Guard - 200 Amps

Samlex Waterproof Battery Guard - 200 Amps MPN - BGW-200

$381.30
$419.43
$381.30

MPN : BGW-200

SKU: 99444
Availability: Out Of Stock
Product type: Automotive/RV | Accessories,Electrical | Accessories
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200 A continuous low-voltage disconnect, 12/24 V auto-detect
Ten selectable disconnect/reconnect programs
IP66 housing with remote off input and alarm output
Samlex Waterproof Battery Guard - 200 Amps

Samlex Waterproof Battery Guard - 200 Amps MPN - BGW-200

$419.43 $381.30
Samlex Waterproof Battery Guard - 200 Amps

Samlex Waterproof Battery Guard - 200 Amps MPN - BGW-200

$419.43 $381.30

    The Samlex BGW-200 is a battery guard: a switch placed between the battery and its loads that disconnects them when the battery voltage falls too low, protecting the battery from deep discharge. It carries 200 A continuously and also disconnects on overvoltage, overcurrent and over-temperature. It auto-detects 12 V or 24 V systems.

    Ten programs set the disconnect and reconnect voltages. The default disconnects at 10.5 V and reconnects at 12 V on a 12 V system (21 V and 24 V on 24 V), and other programs range from 9.5 V up to 12 V disconnect for different battery types. When the voltage stays low for 15 seconds the alarm output and LED come on, and the unit disconnects one minute later; it reconnects 5 seconds after the voltage recovers.

    The housing is IP66 rated, and self-consumption is 3.2 mA. Main connections are M8 threaded studs, and a remote off input and a 100 mA status/alarm output allow a switch, buzzer or relay to be added. Programs are set by briefly connecting the CONFIG wire to negative, and settings are kept when the battery is disconnected. Samlex lists a two-year limited warranty.

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    Installation & Compatibility Guides

    Check Both Connections and the Electrical Rating

    The BGW-200 protects a 12 or 24 V battery from over-discharge. Check these six points before you buy.

    1. Identify the Accessory Function

      This is a battery guard (low-voltage disconnect). It does not charge the battery.

    2. Check Both Connection Ends

      Battery and load connect to M8 studs. Control wires use 6.3 mm Faston terminals.

    3. Verify Electrical Ratings

      Keep continuous load current within 200 A. It auto-detects 12 or 24 V.

    4. Measure the Required Length

      Use wire of at least 50 mm² and keep runs short to limit voltage drop.

    5. Review Environment and Orientation

      The housing is IP66. Mount it close to the battery and away from heat.

    6. Confirm Contents and Installation

      Set the program with the CONFIG wire and follow the Samlex manual.

    Battery Guard or Battery Switch?

    A manual battery switch isolates the battery only when you remember to turn it off. A battery guard disconnects loads automatically at a set voltage, so an accidental drain cannot run the battery flat.

    Choose the size by your continuous load current. Compare the BGW-40 (40 A) or BGW-60 (60 A) if your loads are smaller or larger. Do not use a battery guard to switch an inverter's input unless its current rating covers the inverter's draw.

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    Frequently Asked Questions

    What does the BGW-200 do?
    It disconnects loads from the battery when the voltage falls too low, and on overvoltage, overcurrent or overheating.
    Does it work on 24 V systems?
    Yes. It auto-detects 12 V or 24 V.
    What are the default settings?
    Disconnect at 10.5 V and reconnect at 12 V on a 12 V system, or 21 V and 24 V on a 24 V system.
    Can I change the disconnect voltage?
    Yes. Ten programs are set by briefly connecting the CONFIG wire to negative.
    Is it waterproof?
    The housing is rated IP66.
    Can I add a remote switch or alarm?
    Yes. It has a remote off input and a 100 mA status/alarm output for a buzzer, LED or relay.
    How much current does it use?
    Samlex lists 3.2 mA self-consumption.
    What warranty does it have?
    Samlex lists a two-year limited warranty.

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    Need help comparing the Samlex BGW-200, SKU 99444, MPN BGW-200? Share your battery voltage and type and the total current of the loads you want to protect. These details help us answer your selection question before you order.

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