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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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06-21-2019, 06:13 AM | #21 |
Not Yet Wild
Join Date: Apr 2010
Posts: 41
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Re: how to figure amp draw
Yea, I was about to ask you guys that.
The guy is selling a charger for it and a gauge to check on output. My question was like you asked, will I have to upgrade my controller, or is this a straight switch? My cart has the stock controller in it. It's a 2001 club cart. |
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06-22-2019, 04:28 AM | #22 | ||
Gone Wild
Join Date: Jul 2018
Location: Central Ohio
Posts: 1,720
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Re: how to figure amp draw
Quote:
Quote:
Not trying to scare anyone away. Just showing this is a real concern when doing this type of thing. There is a lot of great information shared in this thread and will get you a good start in making decisions as to what all is needed to have a safe system. I would also suggest deciding on what BMS system you want to use before buying your charger, wish I had. |
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06-22-2019, 07:30 AM | #23 |
Not Yet Wild
Join Date: Apr 2010
Posts: 41
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Re: how to figure amp draw
So i went ahead and pulled the trigger.
I got the 66 Ah one. I did a straight swap. The lithium module took up the same space and weight as 1 battery. I used the existing tie-downs to hold it in place. I kept 2 6-volt batteries and hooked them up in series to get me 12 volts for my lights and usb charger. I took it for a spin. Doing max speed (12 mph or so) it covered .85 miles and went from 96% to 88%. I extrapolated about 1 mile per 10%, but thats open throttle. I would have been able to do my golf courses’ 6 miles with 40% charge left. Im hoping doing it in spurts in a span of 4 hours will extend it. Ill report back this afternoon. Also, it only takes 3 or so hours to charge the battery to 100% so not planning to leave it plugged in overnight even though the charger is supposed to cut off by itself. Sent from my iPhone using Tapatalk |
06-22-2019, 01:48 PM | #24 |
Not Yet Wild
Join Date: Apr 2010
Posts: 41
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Re: how to figure amp draw
So, just got back from a round of golf. It went down to 88% by the third hole.
Weirdly enough, it stayed in the 80's for first 6 or so holes. During acceleration, it goes 10-12%, but comes back up when I stop. It didn't go below 70% until 17th hole or so, during acceleration. Got done with the round and it's at 75%. At that rate, I feel I could have done 3 rounds of golf. I would have been fine with the 45 Ah pack no problem. This ended up being a good decision. No more having to water the freaking batteries. It only takes 3 hours for a full charge. And it feels alot more spry and I'm hoping I don't have to worry about batteries again for a few years. |
06-22-2019, 02:35 PM | #25 |
Not Yet Wild
Join Date: Apr 2010
Posts: 41
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Re: how to figure amp draw
Interesting thing i noticed. It seems that after you stop, It regenerates lost life. It was down to 75% when I put it in the garage and when i went in there an hour later, it had gone up to 82%, and i haven’t plugged it in.
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06-23-2019, 07:04 AM | #26 | |
Gone Wild
Join Date: Jul 2018
Location: Central Ohio
Posts: 1,720
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Re: how to figure amp draw
Quote:
I like seeing what folks use and learn for possible future builds. |
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06-23-2019, 12:48 PM | #27 |
Not Yet Wild
Join Date: Apr 2010
Posts: 41
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Re: how to figure amp draw
They are chevy volt batteries. Charging them to 100% capacity with 15 amp charger.
BMS, we dint need no stinking bms. Sent from my iPhone using Tapatalk |
06-23-2019, 03:39 PM | #28 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: how to figure amp draw
Wow
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06-23-2019, 04:48 PM | #29 |
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,283
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Re: how to figure amp draw
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06-23-2019, 05:14 PM | #30 |
Gone Wild
Join Date: Sep 2016
Location: Northern California
Posts: 1,300
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Re: how to figure amp draw
Trevinom, by wow, and double wow, these guys are trying to tell you that they don’t agree with what you’re doing. Charging to 100% and not having a bms. There’s a guy on here somewhere that bottom balances, then runs without a bms, but I think he’s pretty knowledgeable about what he’s doing, and he monitors the cells. I don’t know if you are, or aren’t, but you should be aware of the risks.
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