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Top Rated Samlex Bgw-40 Waterproof Battery Guard - 40 Amps [bgw-40] Mega Pack [oAOeMVWL]

$23.99 $76.99 -69%

BGW-40 Waterproof Battery Guard - 40 AmpsThe Battery Guard Waterproof BGW-40 is an intelligent, user-programmable, fully waterproof battery guard. The battery guard prevents the excessive discharge of the battery (which would damage the battery) and

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Top Rated Samlex Bgw-40 Waterproof Battery Guard - 40 Amps [bgw-40] Mega Pack [oAOeMVWL]

BGW-40 Waterproof Battery Guard - 40 Amps

The Battery Guard Waterproof BGW-40 is an intelligent, user-programmable, fully waterproof battery guard. The battery guard prevents the excessive discharge of the battery (which would damage the battery) and protects electronic appliances against overvoltage. Includes “Automatic Board System Detection,” the BG automatically detects the battery voltage (12 or 24V). The BGW-40 battery guard is capable of carrying a 40A continuous load and 45A transient load. There is a choice out of 10 on/off threshold voltage programs, for both 12V and 24V battery systems, which can be easily programmed. The BGW has additional options for a remote off switch and an alarm output for connecting a buzzer, LED strip, or relay.

Features:

  • Can be set to connect/disconnect at several different voltages with jumpers
  • Helps batteries last longer
  • Prevents damage to connected components
  • Prevents excessive voltage caused by faulty alternators or chargers
  • Fully waterproof

Applications:

  • Marine, automotive, and recreational

Specifications:

  • Input: 6-35 VDC
  • Output: 6-35 VDC
  • Amps: 40 Amps
  • Weight: (lbs) 0.4 / (kg) 0.2
  • Dimensions: (inch) 2.44" x 2.83" x 1.26" / (mm) 62 x 72 x 32

*No battery included

Specifications:

  • Type: Covers
  • Box Dimensions: 2"H x 3"W x 3"L WT: 0.45 lbs
  • UPC: 622988086472

Quick Guide (pdf)
Owner's Manual (pdf)
Brochure (pdf)

What Our Customers Say

January 26, 2026

Absolutely no complaints!

It’s an investment that I'm very, very glad I made.

- Diggory Y..

January 26, 2026

Absolutely no complaints!

Excellent. I'm very, very, very, very happy with it.

- Briallen F..

January 26, 2026

Absolutely no complaints!

This is a superior product, and bar none at all.

- Carys O..

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