Bogart Engineering,
manufacturer of the TriMetric and PentaMetric battery monitors.

19020 Two Bar Road, Boulder Creek, CA 95006 USA Phone:
(831) 338-0616

The TriMetric (Model TM-2020) has been available since April 1998 and incorporates "user friendly" features including a "Battery % full" display, and a "battery reminders" to help users to better care for their batteries. The suggested retail price of the TM-2020, with shunt is under $200.

More information about the TriMetric......

Photo features and specifications of latest model TM-2020: (4 pages)

Instruction manuals and other information for the TriMetrics:The following documents are in Adobe Acrobat (.pdf) format for which you need the "Acrobat reader" program on your computer. If you are unfamiliar with Adobe acrobat format, click here: About Adobe Acrobat for more information.

How to use the TriMetric or other battery monitor to conserve energy, maintain batteries and monitor system operation.....more basic information than in the TriMetric instruction manual. THIS IS NOT THE REGULAR INSTRUCTION MANUAL. They are located a few items down from this.

A TriMetric user's manual (15 pages) designed to aid the intelligent energy user about the basics of using a renewable energy system. It explains "volts", "amps", "amp-hours" and battery care. It assumes no knowledge about electricity.

Troubleshooting the TriMetric. Newly revised, May 2004:

Troubleshooting the TriMetric. Information for the technician on what do if the TriMetric does not work as you expect. (about 5 pages)

Shunt information.

Information on shunts. What a shunt is for, power considerations, specifications for a few 500A and 100 A shunts. (2 pages)

Instruction manuals for TM-2020:

Instruction manual and wiring diagram for TM-2020 Revised October 2005. (16 page PDF document) in Adobe acrobat format.

Orientation page for TM-2020 (2 pages PDF document) Quick setup information in Adobe acrobat format.

How to connect the TriMetric to measure ONLY the Solar, Wind, (or other) input charging source

How to connect the TriMetric to measure only an input source.

Instruction manuals for (now obsolete models) TM-1B and TM-2B:

Instruction manual for TM-1B and TM-2B, part 1: Installation and basic functions: Volts, amps, amp hours (8 page PDF document) in Adobe acrobat format.. Instrunction manual for TM-1B and TM-2B, part 2: Supplimentary instructions for 7 extra data functions. (8 page PDF document) in Adobe acrobat format.

Instruction manual for TM-48V, 48V adapter and lightning protector:

48V adapter and lightning protector: Instructions, specifications and wiring diagram of (model TM-48V ). When connected to the TriMetric it adapts the standard TriMetric for 48V (and 32V) systems, and also provides a high degree of lightning protection for the TriMetric used at any voltage. (2 pages)

Cable diagrams

Cable 1:  Detailed cable diagram for connecting TriMetric to battery and shunt, up to 300 feet away, using 6 conductor, #18 cable. Shows fuse, ring connectors and method of connection to meter. For connection to systems less than 55 feet away, see below.

Cable 2: Detailed cable diagram for connecting TriMetric to battery and shunt, up to 55 feet away, using 4 conductor, #22 cable. Shows fuse, ring connectors and method of connection to meter.

We're listening. We want to make the best possible product at affordable price for our customers. We're always happy to listen to your suggestions for product improvement. Call and talk to Ralph Hiesey at (831)338-0616, or e-mail to: bogart@bogartengineering.com.

NOTE when sending email: We receive an incredible amount of spam. In the subject line be sure to include something that will distinguish it from spam. For example, don't say "Question for you" or "Hi". Much better would be "Question about TriMetric" or "Battery system comment"