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Old 07-20-2019, 08:23 PM   #1
Alan0713
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Default Lead Acid Battery power meter recommendations

I have been researching the available power meters for my 48V 2016 EZGo TXT. Most of what I see on the market looks like crap. One example is the DROK 48V digital meter. It looks OK but it has a 3% accuracy over it 63V range. That is an error of 1.8 V. According the lead acid battery tables the difference between full charge and 50’% discharge is approximately 2V (50.4V full charge and 48.4 V at 50% discharge). I’m thinking about foregoing the voltmeter and installing an hour meter to monitor battery use. What have others done to monitor battery capacity?
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Old 07-20-2019, 08:33 PM   #2
orangeman6
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Default Re: Lead Acid Battery power meter recommendations

A lot of guys here have this one. https://www.cartsunlimited.net/battery-meters.html
Mine is very accurate compared to my dmm. I have read about people having an hour meter but don’t think it’s very common.
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Old 07-20-2019, 08:57 PM   #3
kernal
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Default Re: Lead Acid Battery power meter recommendations

Check out this thread: http://www.buggiesgonewild.com/elect...r-install.html
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Old 07-20-2019, 09:04 PM   #4
Alan0713
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Default Re: Lead Acid Battery power meter recommendations

Thanks. I saw that model but dismissed it because it was a two wire system. In order to kill the meter with the key I would need to use a relay which I was trying to avoid. I figured a three wire meter with an internal solid state switch was better. I’ll read up on your suggestion
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Old 07-20-2019, 09:42 PM   #5
teecro
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Default Re: Lead Acid Battery power meter recommendations

Quote:
Originally Posted by Alan0713 View Post
Thanks. I saw that model but dismissed it because it was a two wire system. In order to kill the meter with the key I would need to use a relay which I was trying to avoid. I figured a three wire meter with an internal solid state switch was better. I’ll read up on your suggestion
No need to kill it at all, it draws so little amperage that it has all but ZERO draw on the batteries. Mine is wired up via a toggle switch but that's only cause I use it to also check my reducer output. It's also spot on in agreement with my Fluke meter...
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Old 07-20-2019, 09:43 PM   #6
LukeL
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Default Re: Lead Acid Battery power meter recommendations

Another vote for the carts unlimited meter. Always on is great too. I always leave mine on.
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Old 07-20-2019, 09:52 PM   #7
Alan0713
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Default Re: Lead Acid Battery power meter recommendations

Good advice thanks
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