02-19-2021, 03:33 PM | #11 |
Gone Loco
Join Date: Jul 2020
Location: South Florida
Posts: 1,123
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Re: RoyPow problems
Prime is the worst...they're local to me and I went there once...never again. I would not hold your breath for resolution.
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02-19-2021, 08:27 PM | #12 | |
Not Yet Wild
Join Date: Oct 2020
Location: Arizona
Posts: 15
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Re: RoyPow problems
Quote:
ALSO... I may have solved the mystery by disconnecting the stock battery gauge. With the stock gauge installed, I could only drive about 1/2 mile before the low charge beep. With the gauge disconnected, I was able to drive continuously for 20 minutes and my cheap Amazon gauge still shows 100%. I’ll try a longer test tomorrow. My theory is that since the RoyPow gauge connects to the pack via a Rs485 cable there is an exchange of data between the gauge and the BMS in the battery pack. It looks to me that the gauge has malfunctioned and is sending erroneous data back to the BMS. When the BMS gets a low voltage signal sent back to it from the gauge, it shuts down even though there is still plenty of charge (like 100%) remaining. Now I just need to track down a new RoyPow SOC gauge to test my theory. Feeling hopeful that I won’t need to replace the pack. I’ll update again after more testing |
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02-19-2021, 08:41 PM | #13 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,673
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Re: RoyPow problems
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02-19-2021, 08:42 PM | #14 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,173
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Re: RoyPow problems
Be careful here. If only one cell is crapping out the BMS will shut you down and the SOC gauge may not tell the whole story. Unless you can monitor the individual cell voltages, you can't be sure you don't have a battery problem.
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02-19-2021, 09:52 PM | #15 |
Not Yet Wild
Join Date: Oct 2020
Location: Arizona
Posts: 15
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Re: RoyPow problems
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02-19-2021, 10:02 PM | #16 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,673
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Re: RoyPow problems
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02-20-2021, 02:13 PM | #17 |
Not Yet Wild
Join Date: Oct 2020
Location: Arizona
Posts: 15
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Re: RoyPow problems
Contacted RoyPow thru their Facebook page. They responded right away. The western rep is supposed to be in AZ in a few weeks and I hope to meet with him to resolve the issue. Hopefully it’s just a bad gauge.
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02-20-2021, 02:18 PM | #18 |
Gone Wild
Join Date: Dec 2009
Location: Aiken, SC
Posts: 13,146
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Re: RoyPow problems
I’ll be watching to see what happens with this.. Probably going to have to replace one of my packs soon and just found out that there is a Roy Pow dealer on the other side of Augusta from me.
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02-21-2021, 06:28 PM | #19 |
Not Yet Wild
Join Date: Oct 2020
Location: Arizona
Posts: 15
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Re: RoyPow problems
Drove over 10 miles today with the cheap battery meter from Amazon. Took it down to about 50% battery. Charged it up to full in just under 2 hours. Everything seems normal. I’ll take it out on the course for 18 holes tomorrow. Pretty confident it will do fine. Hopefully I will be able to replace the original battery meter eventually.
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03-02-2021, 12:47 AM | #20 |
Not Yet Wild
Join Date: Oct 2020
Location: Arizona
Posts: 15
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Re: RoyPow problems
Battery has been working fine. Played several 18 hole rounds without issue. I’ve been a bit paranoid with the cheap-o battery meter since I have the volt limits set at 53.0 and 50.5. I get a decent dip in percentage under load even though the voltage is above 51. I just ordered a better monitor (Renogy) with a 500a shunt so I can get a more accurate display of remaining capacity in Amp-hours. Should have it installed by the end of the week, then I’ll post an update.
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