SKU: 80616978392

NASA Battery Monitor Clipper BM-2 12VDC

Sale price$121.50 Regular price$135.00
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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
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Exchange/Return Notes
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SKU: 80616978392

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Susan Trissell
Boise, US
★★★★★ 5
Great for reading for comprehension, also a Great book to use for all kinds of Science lessons
Format: Hardcover
This book was used as part of a Science lesson, living and non-living resources. My class drew kites, read the book, flew kites, and more during this unit. “Kite Day: a Bear and Mole Story” is a favorite of the students in my school.
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Reviewed in the United States on May 1, 2021
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Aja
West Palm Beach, US
★★★★★ 4
BRIGHT EYES OPENED WIDE
Format: Hardcover
This easy to read book for 3-7 yr olds is very moves easily through the story's tale and is so colorful! I introduce it to my toddler class during circle time and their facial expressions were exciting with the turn of every page. After hearing and seeing the tale told; they had many questions. I enjoyed it just as much as my toddlers.
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Reviewed in the United States on March 27, 2013
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cher
Birmingham, US
★★★★★ 5
Super fun!
Format: Paperback
Very cute for weather week.
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Reviewed in the United States on May 17, 2019
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Amazon Customer
Phoenix, US
★★★★★ 5
Such a cute story
Format: Paperback
This book was a perfect complement to my preschool curriculum about weather! What a fun Windy day story.
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Reviewed in the United States on January 13, 2022
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maryk
Battle Creek, US
★★★★★ 5
Bear books inspire different things.
Format: Hardcover
I like how the author/illustrator convey that this big furry bear is both bearlike but also very sweet and kind.
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Reviewed in the United States on February 8, 2022

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