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Charging Cycle?

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Old 02-03-16, 12:23 PM
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Roytoy
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Charging Cycle?

When this snow is gone (hopefully next week) I will be riding my first ebike to work for the first time. Depending on my route it will average 2.5 miles one way. Mostly uphill in the morning, then mostly downhill and level going home. I will bring the battery inside once I get there, should I charge it up immediately, or wait and ride home and charge it up so that it just gets charged once a day? Is either option better than the other?
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Old 02-03-16, 12:29 PM
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What type of battery technology does it use? Most battery technology in wide use today does not exhibit "memory" so you can recharge frequently. Some warn about depleting the battery charge below 20%. Determine what technology you have and do a little Googling.

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Old 02-03-16, 12:33 PM
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Depends on how low it ends up at the end of the day... 1/2+ charge left I would charge it when I got home, 1/4 or less charge I would probably charge it at work and when I got home...
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Old 02-03-16, 12:50 PM
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Thanks. Its a 48 volt Lithium Ion. So far I've ridden it up to 4 miles at a time and the indicator on the display hasn't moved off of full charge. I do pedal almost always. Only throttle alone when almost home just to have a little fun.
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Old 02-03-16, 01:05 PM
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Your battery will almost certainly have far more than enough charge to get you to work and back. Five miles is nothing.

If you know your pack's amp-hour (Ah) rating you can multiply that by the pack's voltage to get Watt-hours. Dividing Watt-hours by 20 or 25 Watt-hours per mile will give you a rough estimate of your bike's range when fully charged.

For reference: https://www.electricbike.com/watt-hours/
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Old 02-03-16, 03:21 PM
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Thanks. Looks like the low estimate is 19.2. I figured I'd have the range, I was just wondering if it was better to chip away with small charging cycles or wait and do bigger cycles. I guess from what I'm learning here, and thank you all very much, is that I'm not riding far enough for it to really matter.

So what constitutes a charging cy​cle? My Samsung pack is rated for 900-1000 cycles. I'd hate to think that I was wasting all of my cycles with daily 5 mile charges. Should I only charge every 10 miles or so? Or wait until the status indicator goes down to 50%?

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Old 02-03-16, 05:09 PM
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Might want to read this. Hope it helps.

How Often Should I Charge My Gadget's Battery to Prolong Its Lifespan?
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Old 02-03-16, 06:11 PM
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Originally Posted by bobwysiwyg View Post
What I got from that site is... If your battery gets you 40miles per-100% charge usage, on average... You would/could get,

100% discharged you would/could go 16,000 miles before the battery dies/is useless, on average...
50% discharged you would/could go 27,000 miles before the battery dies/is useless, on average...
75% discharged you would/could go 22,500 miles before the battery dies/is useless, on average...
90% discharged, you would/could go 16,900 miles before the battery dies/is useless, on average...

50% seems to be the winner!!!

EDIT; 25% discharge, in theory at least, may be better, in the OPs case... ?

Last edited by 350htrr; 02-03-16 at 06:26 PM. Reason: spelling
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Old 02-03-16, 06:53 PM
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Originally Posted by 350htrr View Post
What I got from that site is... If your battery gets you 40miles per-100% charge usage, on average... You would/could get,

100% discharged you would/could go 16,000 miles before the battery dies/is useless, on average...
50% discharged you would/could go 27,000 miles before the battery dies/is useless, on average...
75% discharged you would/could go 22,500 miles before the battery dies/is useless, on average...
90% discharged, you would/could go 16,900 miles before the battery dies/is useless, on average...

50% seems to be the winner!!!

EDIT; 25% discharge, in theory at least, may be better, in the OPs case... ?
Basically, discharge as little as possible before recharging, only charge above 80% capacity when you really need to, and don't just leave it charging all the time.
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Old 02-03-16, 07:04 PM
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Originally Posted by Arcanum View Post
Basically, discharge as little as possible before recharging, only charge above 80% capacity when you really need to, and don't just leave it charging all the time.
Yea, about that, I was thinking these battery tenders/chargers that keep everything 100%, are they doing more harm than good when put on batteries that don't get used much? But then again they are different type of (RV) batteries I suppose...

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Old 02-03-16, 08:05 PM
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Originally Posted by 350htrr View Post
Yea, about that, I was thinking these battery tenders/chargers that keep everything 100%, are they doing more harm than good when put on batteries that don't get used much? But then again they are different type of (RV) batteries I suppose...
In the case of lithium-ion batteries, bringing the battery to 100% and holding it there for long periods is definitely not good for the battery. Lead-acid and other chemistries are likely to have different behaviors.
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Old 02-04-16, 10:29 AM
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Thanks everyone. Good info here.
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