SKU: 80616978392

NASA Battery Monitor Clipper BM-2 12VDC

Sale price$121.50 Regular price$135.00
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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15

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Description

NASA Battery Monitor Clipper BM-2 12VDCFeatures Specifications Supply voltage 8 16 Volts DC Supply current 1. 5 milliamps Battery capacities 5 999 AMP Hour Load current 199 AMPS Maximum Charge current 199 AMPS Maximum Shunt Standard 50 millivolt @ 200 AMP Cables supplied: 200 AMP shunt link to M8 Ring terminal. 5 Metre from display unit to battery fused and fitted with ring terminals for shunt fuse holder and M8 ring terminal to battery. Display unit Standard 110mm square Clipper case.

Features

Specifications

  • Supply voltage 8 - 16 Volts DC
  • Supply current 1.5 milliamps
  • Battery capacities 5 - 999 AMP Hour
  • Load current 199 AMPS Maximum
  • Charge current 199 AMPS Maximum
  • Shunt Standard 50 millivolt @ 200 AMP

Cables supplied:

  • 200 AMP shunt link to M8 Ring terminal.
  • 5 Metre from display unit to battery - fused and fitted with ring terminals for shunt fuse holder and M8 ring terminal to battery.

Display unit

  • Standard 110mm square Clipper case. High contrast LCD backlit for night viewing.
  • Minimum voltage visual alarm
  • Simple operation - 4 keys to select backlight Volt/Amp/State of Charge screen
  • AMP hours or Time to run.

How does it work? The minimum information required to monitor the state of charge of a battery is the terminal voltage and the charge/discharge current **. The BM2 measures both these parameters and computes the state of charge using a complex well proven algorithm. A simple and intuitive display shows the service battery voltage charge/discharge current state of charge and time to charge/discharge. The instrument also warns the user when the charge level is too low so that load can be shed or charging commenced to protect the battery. A resettable Amp Hour counter is provided for checking the efficiency of the charging system or keeping a track of power consumption and a second input lets the user monitor the voltage of the starter batter. The simple display format does not mean the internal software is unsophisticated. In fact two separate algorithms are used. One based on integrating amp hours over the charge and discharge cycle the second based on an adaptive internal mathematical battery model.

A unique feature of the BM2 is its ability to use information from both algorithms during the charge/discharge cycles to continually update its performance. This means that unlike many other systems that rely solely on amp hour integration the NASA Marine BM2 never needs to be re-synchronised with the battery. The algorithm includes Peukert's equation to ensure accuracy over a wide range of load currents. The BM2 does all this whist consuming a meagre one and a half milliamps. It is a true battery monitor easy to install and excellent value for money.

** Some say that they can calculate the state of charge from the terminal voltage only but as we all know the terminal voltage falls when the battery is under load and rises when under charge. This fall and rise can be quite substantial especially when a heavy current is flowing so how can the terminal voltage be used to calculate anything without knowledge of the magnitude of the current involved?.

In The Box

Display; 200 AMP shunt link to M8 Ring terminal; 5 m cable.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 80616978392

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4.7 ★★★★★
Based on 6 reviews
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Verified Purchase
Lizzie's Mom
Omaha, US
★★★★★ 5
Very sturdy for an aggressive chewer
Color: Green, Size: Large(50-90 lbs)
I was so surprised that this has lasted so long for my Black lab, who is an aggressive chewer. It is his all-time favorite toy. He chews it many times every day and the squeaker still works!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
H
Verified Purchase
Homeschooling Mom
Natrona Heights, US
★★★★★ 5
I FINALLY GOT AN INDESTRUCTIBLE TOY!!! Yes!
Color: Green, Size: Large(50-90 lbs), Color: Green, Size: Large(50-90 lbs)
This one is TRULY indestructible! I’ve been purchasing one after another trying to find something that she cannot break in 5 mins. Everything I’ve ordered (until this one) has been SHREDDED in 3-10 minutes! It’s TRUE RUBBER! I’m so happy with my purchase! See the picture below- we’ve had it for a couple months now and she has barely chewed off just a few small nubs! Which she’s proud of 😆 If you truly want a challenge for your CRAZY DOG- you will love this squeaker!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
M
Verified Purchase
Millie
Grantham, US
★★★★★ 5
Rough and tough chew toy
Color: Azure, Size: Large(50-90 lbs)
This is a thick and heavy duty toy to stand up to medium to large dogs who are heavy chewers. And the rough textures really encourages my dog and it is the perfect size to throw and play fetch. Very sturdy…I bought around Christmas and it’s almost may and she hasn’t destroyed it yet!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
C
Verified Purchase
Cindy Tuttle
Belleville, US
★★★★★ 4
Very sturdy and strong toy
Color: Green, Size: Large(50-90 lbs)
This keeps my dog busy. He has a blast with it. It is a little bit big for his mouth, but he still seems to have fun with it. My dog is German Shepherd and Australian Shepherd.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
A
Verified Purchase
Andrew Georgen
Omaha, US
★★★★★ 5
Awesome squeaker toy!
Color: Green, Size: Large(50-90 lbs)
Noise level is expected. It’s a squeak toy. If you get annoyed by your dog having fun, get outta here. It’s a bigger toy so I don’t worry about choking. It’s bouncy and a tough material for our tough chewer. Color is whatever! Great toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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