M2 DC State-of-Charge (SoC) Monitor

M2 DC State-of-Charge (SoC) Monitor image number null

M2 DC State-of-Charge (SoC) Monitor

4.3 out of 5 Customer Rating
  • Back Order
Ships from supplier, typically 2-3 weeks.

Vendor Shipping Details

This item will be fulfilled from the vendor. Delivery time varies – typically 2–3 weeks.

Restrictions: This item does not ship to a PO Box, APO, FPO, DPO or international address. Expedited shipping is not available.

West Marine will email you when your order ships from the vendor.

Protect Your Purchase

Add extra coverage from the date of purchase beyond the manufacturer’s warranty. Details

What's Covered?

PLUS adds up to 2 more years of coverage beyond the Manufacturer's Warranty and offers extra coverage from the date of purchase throughout the extended term. PLUS includes:

  • Wear and Tear Coverage
  • Power Surge Protection
  • Exchange for products under $400
  • Onboard service on products over $750
  • Up to 5 years of total coverage

Your PLUS plan goes into effect with your purchase ‐ no registration required. Purchase your PLUS plan online, in stores or by calling 1 (800) 262-8464.

This item is currently unavailable.
Enter your email address to be added to the waitlist.
Model # 16016149 Mfg # 1830
Truck Freight

Truck Freight is used to ship items that exceed standard shipping limitations on weight and/or size. Delivery is only applicable within the contiguous United States. Additional shipping fees apply. Signature required for receipt of shipment.

Warning Hazard shipping
Item Can only Ship to Store

Knowing the State-of-Charge of your battery is like knowing the amount of fuel in your gas tank. To avoid getting stranded with a dead battery, accurate battery bank monitoring is essential.

Rather than relying upon voltage to determine battery state-of-charge, this monitor calculates battery capacity by measuring amperage in and out of one battery bank with the included 500A shunt. As well as informing of the percent of charge, it also calculates hours remaining, Amp hours (Ah) remaining, and total charging cycles.

With the built-in MOSFET External Circuit Relay, you can also use it to control external circuits based on any value measured by the M2. Bright OLED display is auto-dimming and easy to read with high resolution and sharper contrast compared to traditional LED displays. Programmable 92dB alarm. Waterproof to IP66 standard.


  • Displays and Monitors: Current, State-of-Charge, Voltage
  • Functions: 8 to 70V, to 5000A (500A with included shunt)
  • Max. Voltage: 12V, 24V, 48V
  • Resolution: 0.01V DC
  • Alarms: High Current, High/Low Voltage, Low Battery
  • Current Range: -500 to 500A
  • Input Voltage: 7-70V DC
  • Max. Power Consumption: Less than 1.00W
  • Min. Power Consumption: 0.3W
  • Display Type: OLED 
  • Display Size: 1 3/16"H (28mm) x 2 1/4"W (55mm) 
  • Meter Case: Glass-reinforced nylon 
  • Dimensions: 3 1/16"H (78mm) x 3 1/16"W (78mm) x 17/32"D (14.05mm) 
  • Mounting Hole Size: 2 1/8"dia. x up to 1"D 
  • Fastners: None required 
  • Lighting: Auto-dimming, bright OLED 
  • Waterproof Rating: IP66 (Gasketed face) 
  • Weight: 0.25lb. (0.11kg)
  • Warranty: Three years

Mounting Diagram

Quick Start Installation Guide

Best Use 12V DC Systems , 24V DC Systems , 48V DC Systems
Dimensions 3 1/16"H (78mm) x 3 1/16"W (78mm) x 17/32"D (14.05mm) 
Display Type Digital , State of Charge , Voltage , Current
Type Multi-Function Monitor
Warranty Three Years
Cancer and Reproductive Harm - www.P65Warnings.ca.gov