Watts Up Meter
Watts Up Meter
Track power usage, voltage and current with a Watts-Up meter
storage | electronics | shopping | energy efficiency
Available in the USA for around $60 (and around GBP 45 in the UK), the Watt's Up Meter and Power Analyzer (model
WU100 version 2) is a combined
ammeter,
voltmeter,
wattmeter, and
battery capacity meter. The
Watt's Up meter can either be powered by an auxiliary battery, or in 4+ Volt applications draw power (just 7 milliamps) directly from the main battery in the circuit being analysed. The Watt's Up Meter is manufactured in the USA by
RC Electronics, Inc..
NEW - Click here to buy a
Watts Up Meter in the UK, or here to purchase
direct from USA at
below recommended retail price.
The Watt's Up Meter was designed primarily for use by radio control enthusiasts - for example to track the power usage of RC aeroplanes etc. However it has many useful applications in renewable energy system applications (particularly the
Doc Wattson R102 variant discussed later in this article). The meter is simply connected between the
battery bank and the load - for example a
power inverter.
The Watt's Up meter is just 2.8 x 1.7 inches in size and 0.83 inches in thickness, and has a built-in
0.001 Ohm Shunt.
It is sold without
connectors so you are free to choose how to use and power the meter. However suitable connectors (pictured above) are available for a few dollars at the time of purchase.
Watt's Up Meter Specifications
- Parameter Range Resolution Voltage 0-60 V* 0.01 V
- Current 0-100 A 0.01 A
- Power 0-6500 W 0.1 W
- Charge 0-65 Ah 0.001 Ah
- Energy 0-6500 Wh 0.1 Wh
DOC Wattson R102 Digital Panel Meter
Pictured above is a variant of the Watt's Up Meter - the
DOC Wattson R102 Digital Panel Meter. The Doc Wattson R102 is basically the same as the Watt's Up model WU100 pictured above, but it has been modified to measure systems which maintain high currents for long periods of time - therefore making it perfect for
renewable energy systems.
The Doc Wattson R102 is particularly useful for measuring the health of both individual
batteries and 12V, 24V, 36V, or 48V
battery banks.
Battery charging efficiency (BCE) is measured comparing the discharge energy to the charge energy, and
battery health (baseline capacity ratio) is calculated by comparing its charge capacity with the battery manufacturer's specifications (entered by user).
DOC Wattson R102 Meter Specifications
- Amp-Hours: (0 - 6554)
- Kilo Watt-hours: (0 - 650)
- Amps: (0-100 peak)
- Watts: (0 - 6554)
- Peak Amps & minimum Voltage ("sags")
- Voltage: (0 - 60)
Connecting the
Doc Wattson R102 into a
renewable energy system is very easy. Click here for some
R102 Connection Diagrams
Watt's Up Meter and Power Analyzer User's Manual
The comprehensive 31 page
Watt's Up Meter and Power Analyzer User's Manual is available here (PDF).
Watt's Up Meter Online Similation
An online simulation of the
Watt's Up Meter in action is available on the RC Electronics website by clicking here:
Watt's Up Simulator. The simulator is based on an RC application, but it gives a good idea of the data displayed by the Watt's Up meter when it is connected into a circuit.
Article Last Modified: 12:24, 1st Aug 2008
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