NASA Battery Monitor Clipper BM1 12VDC

NASA

Recommended Retail Price
Inc. VAT

Online Price (inc. VAT)
£120.78

Part Number: SMG 523-BM1

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FREE SHIPPING ON THIS ITEM FOR UK MAINLAND ONLY - EXCLUDES HIGHLANDS AND ISLANDS

Description


The BM-1 is designed to monitor performance of 12Volt lead acid battery systems with capacities of up to 600 Amp hours. It is supplied complete with a precision 100 AMP shunt and a prefabricated cable assembly to enable simple DIY installation. The unit continuously monitors voltage, current (charge or discharge), number of amp/hours (charge or discharge), the batteries state of charge and the time to charge or discharge. This information leads to more efficient use of the battery, which can enhance battery life and reduce the risk of failure.

Features 

  • Supply voltage: BM-1  12V 8 – 16 Volts DC
  • Supply current 1.5 milliamps
  • Battery capacities 5 – 600 AMP Hour
  • Load current 100 AMPS Maximum
  • Charge current 100 AMPS Maximum
  • Shunt Standard 50 millivolt @ 100 AMP

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 BM1+ 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 BM1+ 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 BM1+ 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 BM1+ 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; 100 AMP shunt link to M8 Ring terminal; 5 m cable.

More Information
SKU 523-BM1
Brand NASA

 

 

Showroom & Postal Address:

Chas Newens Marine Company Limited
Ashlone Wharf Boat Yard
Embankment
Putney
London
SW15 1LB 

Phone:

0208 788 4587

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Delivery

Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We try to use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible. 

As with everything automatic, sometimes it might not present you with the best value price, please feel free to contact our helpful team who will endeavour to provide you with our best price for shipping to your address.

UK Standard Delivery

Please use the checkout process to get an accurate shipping quote for your cart, all of our rates are automatically calculated based upon your selections.

As with everything automatic, sometimes it might not present you with the best value price, please feel free to contact our helpful team who will endeavour to provide you with our best price for shipping to your address.

International Delivery

International Delivery is calculated based on a series of complex formulae at checkout and includes options such as UPS International. If you cannot see a rate at checkout, please contact us.

Delivery further information

The delivery charge is automatically added to your order and you will see the total amount you have to pay before you confirm the order. Unfortunately we have to charge carriage but we do attempt to keep it to a minimum where possible

All orders leaving us require a signature, and the delivery could take place any time between 8am and 6pm depending on the courier used. If you are liable to be out, please give an alternative delivery address or type instructions into the notes section as you place your order.

Standard Service; We will aim to dispatch goods within 3 working days. Delivery on the standard service is via courier, will require a signature and we aim to deliver within 5 working days. This service will only arrive on working days.

Courier delivery; The majority of our parcels will be sent via a courier, the bulk of which are with APC Streetwise. Please be aware that they advertise their delivery times as anywhere between 8am - 6pm Monday to Friday. We are not able to dictate to them a time slot. And in most cases a signature will be required.

New! For 2020 – Putney EmbankmentClick & Collect service; New for 2020 finds our first ever collection point on the Putney Embankment. Please select Pick Up at checkout to activate the service

NB; For orders to mainland Europe and Rest of World, the cost for carriage is calculated on order package weight and final destination. The price given at checkout is a guide only and an accurate postage cost will be calculated and invoiced to you if a supplement is required. If you would like to know this figure before despatch please feel free to contact us for a quote. Please be advised that if your order is sent via courier outside of the EU you may need to pay for import/custom taxes after the order has been delivered to you. This is standard procedure by the courier to ensure that your order is delivered to you as soon as possible and not delayed in customs. These charges are solely dependent on your local customs office and the courier, we have no control over these charges. We would kindly suggest contacting your local customs office for more information and advice. Additional charges for customs clearance must be borne by you; unfortunately, we have no control over these charges and cannot predict what they may be. We are unable to reimburse any costs incurred regardless of the circumstances.

ANTIFOUL & PAINT ORDERS; Please be aware that we can only send antifoul & Paint products within GB Mainland. We CANNOT send antifoul & paint outside of GB Mainland. If you have any questions regarding this please feel free to contact our Mail order department.

LIFEJACKETS & CO2 CANNISTERS; Please be aware that we cannot currently send lifejackets with CO2 cannisters included outside of GB Mainland

LIQUIDS & CHEMICALS; Please note we are unable to deliver liquids or chemicals overseas or to highlands and island addresses. We will also have to use a courier service within GB Mainland for liquids or chemicals.

SALE OF KNIVES; In accordance with UK Law (The Offensive Weapons Act 1996), we are unable to sell knives to anyone under 18 years of age. We are unable to send knives to overseas destinations. You must upload a copy of a valid identity document to your order at time of ordering or your order will be cancelled. Knives must be sent on a signature courier service. Valid forms of ID are EU Passports, EU Photocard Driving Licence, MOD Form 90 ID Card, EU Member State National Identity Card, “PASS” ID Cards.

 

Last Updated 2nd September 2020

Our returns policy on items shipped within the UK is as follows:

To qualify for a refund you have 14 days from receipt of your order to notify us that you wish to cancel the order and return the goods. You then have 14 days to return the goods to us at your own expense. If you fail to notify us of your desire to cancel the order and return the goods within 14 days of receipt you are not entitled to a refund. If you do not return the goods to us within 14 days after notification you are not entitled to a refund.

Your items should be unused and in the same condition as received. They should also be in the original packaging.

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

If goods are faulty or damaged on receipt we will ask for photographic evidence of the fault or damage where feasible.

 

To read our full returns and exchanges policy, please click here.

 

Overseas orders may be refunded if the item is returned but we cannot refund the cost of shipping.