11-25-2019, 11:24 AM | #41 |
Not Yet Wild
Join Date: Jan 2010
Location: texas
Posts: 53
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Re: New 2020 Club Car Onward HP Li-Ion
I have treated my HP Li-Ion the exact same way I did my previous lead acid battery cart. I play a round of golf and put it in my cart room where I plug the charger to it. The next day when I go to play golf again I unplug it and it says 100% charge. After the round it shows about 60 or 70% and I go through the whole routine again. Because the cart is always on the charger it never goes below 100% until my next use so I never have a discharge while sitting in my cart room. How long it maintains 100% during use is not important to me because as I say, at the end of the round I still have plenty left to play a second round if I wanted to.
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11-25-2019, 09:26 PM | #42 | |
Not Yet Wild
Join Date: Sep 2019
Posts: 3
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Re: New 2020 Club Car Onward HP Li-Ion
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11-26-2019, 03:53 AM | #43 |
Not Yet Wild
Join Date: Aug 2019
Posts: 68
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Re: New 2020 Club Car Onward HP Li-Ion
If you unplug it for a week after charging and it still reads 90% it would be fine. There is a technical reason for that indicator to show 90% after one night. LiIon batteries are known to drop a little in voltage after charging. They should still have the full Ah although it reads 90%.
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11-26-2019, 08:44 AM | #44 |
Not Yet Wild
Join Date: Jan 2010
Location: texas
Posts: 53
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Re: New 2020 Club Car Onward HP Li-Ion
I still have difficulty understanding why you would ever unplug the charger while the cart is sitting there. Why take it off of charger? As I said in my previous post, I play a round of golf and when I'm done I have about 60 to 70% showing so I plug it in and the next morning when I go to play again I have 100%. Maybe if I did not use the cart for months at a time there might be a different method as a matter of maintenance and storage but as I understand it you really can't overcharge these things thanks to the monitor system. If the battery indicator shows 100% and then it shows something less overnight while still plugged in something is obviously not right. I don't think you can go wrong by keeping the charger plugged in all the time while the cart is not in use.
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11-26-2019, 02:10 PM | #45 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,173
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Re: New 2020 Club Car Onward HP Li-Ion
Lithiums will last longer if you don't keep them fully charged all the time. I play three rounds of golf between charges on mine. I never leave my charger hooked up.
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11-27-2019, 08:24 PM | #46 | |
Not Yet Wild
Join Date: Sep 2016
Location: Ga
Posts: 49
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Re: New 2020 Club Car Onward HP Li-Ion
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11-28-2019, 07:06 AM | #47 | |
Gone Wild
Join Date: Oct 2019
Posts: 646
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Re: New 2020 Club Car Onward HP Li-Ion
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I chose to skip the LiOn route on my Onward, but have a sophisticated E bike that of course is LiOn, and purchased a sophisticated programmable charger and I have a charge profile that only charges the 52V pack to 80% by default. I programmed the controller in the bike to begin cutting power at 20%. So basically if you have a large enough LiOn pack, you can stay between 80% and 20% and the pack will last a very long time and likely die due to chronological age before excess cycling or "use" kills it. Probably the Club Car BMS is only charging it to 85-90% anyway if I had to guess, but probably tells the user it is 100%. This is how Tesla etc... does it. You can put a volt meter on the pack and see what the "real" SOC is (google LiOn 48v 100% charge voltage) if you are curious, and see how that compares to the Club Car meter %. LiOn cells prefer to be around 50% but will last a very long time if they stay between 80-20%. it's the extreme state of charges that degrade cell life, so I wouldn't leave a LiOn cart on the charger unless you use most of the available range each time you use it. |
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11-28-2019, 11:40 AM | #48 |
Not Yet Wild
Join Date: Jan 2010
Location: texas
Posts: 53
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Re: New 2020 Club Car Onward HP Li-Ion
Well, I guess that all makes sense. I could not figure out why you would ever want to take the charger off since it was automatic and I was unaware that a fully charged battery was not a good thing. I have lived 71 years thinking the best thing for a battery was to keep it charged but I guess these Lithium batteries are different. I will try it as a few people have suggested. I can go one round of golf from 100% charge to 70%. I suppose I could go a second round from 70% down to 30% or so and then put it on charge. I'll try that for a while and see what happens in terms of performance.
I do know, according to the manual, that if you store the cart for a long period you should switch to tow/stow and then put the charger on it. The tow/stow setting will not allow the charger to go beyond 50% charge or below 30%. Based on that, it does look like fully charged batteries in these carts is not the best way to insure battery life. |
11-28-2019, 03:18 PM | #49 | |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,173
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Re: New 2020 Club Car Onward HP Li-Ion
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11-29-2019, 09:13 AM | #50 |
Not Yet Wild
Join Date: Jan 2010
Location: texas
Posts: 53
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Re: New 2020 Club Car Onward HP Li-Ion
Thanks, good info and I will go to that method of charging and see how it works out. Like you I could play three rounds on a single charge but that third one would probably run the battery down farther than I would like. I will play two rounds on a fully charged battery which puts me at about 30 to 40% and then charge up from there.
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