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Unread 02-18-2011, 01:53 PM   #1
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Default Watt meter and Power Analyzer

I was wondering if anyone has one of these on their carts or has used one?

A friend at work pointed this out and it looks pretty cool.

http://cgi.ebay.com/Watts-Up-RC-Watt...item4cf51d8eda

Doug
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Unread 02-18-2011, 02:02 PM   #2
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Default Re: Watt meter and Power Analyzer

Current 0-100 A peak, 50 A continuous, resolution 0.01 A

This unit is intended for the RC hobby and is mismatched for cart usage.
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Unread 02-18-2011, 03:46 PM   #3
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Default Re: Watt meter and Power Analyzer

I agree with Gornoman. Your cart will draw as much as 300 amps at full throttle acceleration and 80 amps continuous, 100 amps/50 amps won't cut it.
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Unread 02-18-2011, 06:53 PM   #4
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Default Re: Watt meter and Power Analyzer

And here are the applications to show why it is a no go for a cart.

Applications:

Specially designed for RC Battery Packs to help you:

Set speed control cutoff voltages and currents
Tune performance by comparing different setups of pro-peller, motor, gearing, speed control and battery
Measures a full battery charge
Check when peak currents are safe for battery, speed control, motor, wiring and connectors
Predict airplane flight time based on ACTUAL conditions in your model
Check battery capacity and health and whether battery should be retired
Verify that the minimum voltage under load is within specifications
Check for wiring and connector power losses.
Fine-tuning your electric RC cars & planes for great performance doesn't have to be a guessing game
Measure power and energy consumption of ANY device with a rechargeable battery pack, such as RC car battery pack, Bike lighting battery pack,E-bike and Scooter battery pack
Combine the power analyzer together with our 2.4V - 7.2V, 7.2V - 12V, 24V NiMH universal smart chargers , and with 3.6V - 14.8V Li-Ion battery charger It is perfect tool to monitor battery pack's performance
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Unread 02-18-2011, 08:11 PM   #5
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Default Re: Watt meter and Power Analyzer

if you already have a volt meter, you can add a current meter and then calculate watts in.
-sj
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Unread 02-22-2011, 09:11 AM   #6
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Default Re: Watt meter and Power Analyzer

So, now that I've heard the why nots, does anyone know where I can pick up an amp hr meter than can handle the current on a cart?

Thanks,

Doug
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Unread 02-22-2011, 04:44 PM   #7
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Default Re: Watt meter and Power Analyzer

amp meter? or amp hour meter?

an amp meter is real time device. an amp hour meter is a cumulative measurement.
-sj
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Unread 02-22-2011, 05:00 PM   #8
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Default Re: Watt meter and Power Analyzer

read this Amp meter
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Unread 02-22-2011, 05:19 PM   #9
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Default Re: Watt meter and Power Analyzer

Quote:
Originally Posted by GLEEMO View Post
read this Amp meter
thats a amp meter... the OP is asking for a Ah meter. not the same thing.

think of the meter on the side of your house...
an amp meter = how fast is it turning
amp hour meter = how many times did it turn
-sj
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Unread 02-22-2011, 05:31 PM   #10
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Default Re: Watt meter and Power Analyzer

An ammeter is pretty simple but an AmpHour meter may be too expensive to justify for a cart.
Rather than speculate it might be good if dgcurtis tells us what he's trying to do and we can find the product for him.
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