SKU: 80616978392

NASA Battery Monitor Clipper BM-2 12VDC

Sale price$121.50 Regular price$135.00
Save 10%

Pay in installments of $33.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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:
  1. Standard Shipping : 3-10 business days
  • 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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
T
Verified Purchase
Tabbitha Beard
Alexandria, US
★★★★★ 1
Doesn't work period. I bought these based off of videos. All these products suck
No none of these products worked for me
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
A
Verified Purchase
Amazon Prime
Los Angeles, US
★★★★★ 5
Beef Tallow Sunscreen Stick (Kid-Friendly)
Our family absolutely loves this beef tallow sunscreen stick! It’s become a must-have for park days, sports, vacations, and everyday outdoor activities. The stick format makes application quick and easy, especially when applying sunscreen to active kids who don’t like standing still. The formula glides on smoothly and feels moisturizing without being greasy. I love that it’s made with simple, skin-friendly ingredients and mineral sun protection, making it gentle enough for sensitive skin. My kids haven’t experienced any irritation, and it helps keep their skin soft and protected even during long days outside. One of the biggest benefits is how convenient it is to reapply. The stick fits easily in a backpack, diaper bag, or purse, and there’s no messy lotion to spill. It works great on faces, noses, ears, and shoulders, which are often the areas most exposed to the sun. Why We Love It: - Kid-friendly and easy to apply - Gentle on sensitive skin - Moisturizing with nourishing beef tallow - Convenient, mess-free stick format - Great for outdoor adventures and travel - Mineral-based sun protection Overall, this sunscreen stick provides reliable protection while keeping skin moisturized and comfortable. It’s a fantastic option for families looking for a simple, natural, and kid-friendly sunscreen that makes sun protection easy for everyone. Highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
Y
Verified Purchase
Yae.Lynn
Houston, US
★★★★★ 5
Obsessed with this sunscreen stick!
Just got this Beef Tallow Sunscreen Stick and I'm honestly really impressed! I wasn't sure what to expect since I've never used a tallow based sunscreen before, but it feels so nice on my skin. It glides on super smoothly, doesn't leave a weird sticky feeling, and makes my skin feel moisturized instead of dry like some sunscreens do. I also love how easy it is to throw in my bag and just reapply throughout my day. The ingredients are a huge plus for me too ofc! I like that it's made with beef tallow, honey, and beeswax instead of a bunch of stuff I can't pronounce. I've worn it outside for a few hours already and it held up great. No irritation, no white cast, and my skin felt really soft afterward. Definitely happy with this purchase and I'll be keeping it in my daily routine. Highly recommend if you're looking for a more natural sunscreen option!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
A
Verified Purchase
Alianet Fernandez
Boise, US
★★★★★ 5
Loved This Sunscreen Stick ☀️
I really love this sunscreen stick! It feels smooth on the skin, doesn’t leave a heavy white cast, and the natural ingredients make it feel very gentle. I also liked how moisturizing and easy to apply it was. Perfect for everyday use and great for keeping my skin protected outdoors! ☀️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
J
Verified Purchase
Jalynn
West Palm Beach, US
★★★★★ 4
Good but very small
The texture is smooth and it smells nice. Definitely way smaller than I was expecting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026

recommand products