Charging Baterie to maximum all the time.

[Urbancowboy]

Regarding Bateries I am no "Expert" therefore I listen to what People claiming to have Knowledge, have to say. However that does not mean I do not question the "Experts" answers if something seems off. And only the Almighty knows how many real "Experts" there are in the Internet. If things dont make "Sense" to me, I rather do what I feel seems right untill proven otherwise.

After each eBike trip I used to fully charge my eBike Bateries all the time simply this way if I want too take off on a Whimm, I could bennefit from fully charged Batteries, my eBike has 2. After reading numerous articles about the benefits of not fully charged Bateries I switched to this mode, thinking nothing wrong to listen to an "Expert".

Now like many of us I am using Laptop Computers (yes more then just one) and when a Computer returns to the Office he gets hocked up to Power which mean all Batteries are usually fully charged all the time unless away from the Cable.
So why is this practise good for the Laptops but detrimental to eBike Bateries which presumably uses the same kind of Bateries ?

Looking forward for a common Sense Answer ! Having credentials would be a plus.

Thanks - UC

 

[teskow]

I can't answer your question but I do normally charge when at 50% to 80% on all of my lithium ion batteries if possible only because the people in the know seem to recommend that.
My Question is what do ebike batteries only last such a short time verses auto electric autos lasting 10 plus years? Even Tesla recommends to 80 % for the day to day charge if not going on a long trip.

 

[fauconnier]

It is simply the function that requires a less battery-friendly sequence. Batteries "suffer" from being fully charged but it is a necessary evil for many applications. From a battery perspective the expert rules for charge, discharge and storage conditions are beneficial and will greatly delay battery deterioration, have no doubt about it. Our smarter devices are advanced enough to protect themselves by varying the degree of charge or discharge to ensure a battery life that meets market standards. As for bikes, I always charge to the maximum but at the last moment. Between my rides the batteries are kept cool around 3.7v to 3.90v per cell. This is what suits me. The 7 year old battery of my first bike gives me almost the same distances as before.

Apple suggests keeping your iPhone cool and at 50% if not used for a few weeks...

 

[harryS]

It's all relative, Charging your battery to 100% will give you less life, but does that matter as far as how you use it?

This is a data plot from one of the earlier studies on battery charging from a Battery University website. The worst life is 100%-25% battery cycling. Compare it to 75%-25% cycyling, They get 3000 DST cycles compared to 1000 DST cycles. Yes, the data shows you get longer battery life with less stress,

At the same time, how many DST cycles do you want for these batteries? If you only need 80% of the battery, you can still get 3500 cycles.

I have a 36V10AH battery from 2015 that has always been charged full after every ride (except in winter). I doubt it has even had 500 cycles in the past 9 years. I've tested it, and it's close to 90% of original. I

 

[Gionnirocket]

Really?!?!
Again???

 

[6zfshdb]

I'm not disputing the "experts" here, but I charge my six e-bike batteries to 100% on a regular basis. I do so because I need the range. I usually keep them between 40 and 60% when in storage but charge to 100% just before a ride. I do have one purchased in 2018 that has lost 7% of capacity. The other 5 show little or no loss whatsoever.

I also have a dozen or so lithium cordless tool batteries that are kept charged to 100% all the time. No noticeable loss of capacity with any and some are 6 years old.

 

[Catalyzt]

I'm not disputing the "experts" here, but I charge my six e-bike batteries to 100% on a regular basis. I do so because I need the range. I usually keep them between 40 and 60% when in storage but charge to 100% just before a ride. I do have one purchased in 2018 that has lost 7% of capacity. The other 5 show little or no loss whatsoever.

I also have a dozen or so lithium cordless tool batteries that are kept charged to 100% all the time. No noticeable loss of capacity with any and some are 6 years old.

This, agree generally. The one battery I had trouble with was the Hilltopper, which was very small / low capacity, frequently run down to zero, and which I left 'on' all the time-- I never remembered to shut the battery off when I got home, and the passive drain was huge-- I'd leave it on with five miles left, and it would be dead in a couple of days. Max range was occasionally 15 miles when it was new, but if fluctuated so much you were better off counting on 12, and one windy day it only got 11 miles. That battery was also subjected to extreme loads-- a front hub drive with a tiny battery that was probably not REALLY meant for repeated brutal thousand-foot ascents on steep grades. It was down to about eight or nine miles, and then either it died or the controller-- never replaced it, never found out, but Hilltopper suspected it was the battery.

Now like many of us I am using Laptop Computers (yes more then just one) and when a Computer returns to the Office he gets hocked up to Power which mean all Batteries are usually fully charged all the time unless away from the Cable.

Maybe they are, and maybe they are not, depends on the laptop. Apple, for example, has a battery management system on by default which does limit the max charge of your batteries (more so in some situations, like when it's hot) automatically to improve their lifespan.

Similarly, my Samsung smartphone encourages people to charge their phones to 85% in situations when they don't need full power to prolong battery lifespan. Fast charging also degrades battery lifespan, so I charge slow overnight to 85% whenever I'm not traveling or don't really need a full charge.

 

[indianajo]

I charge to 100% only twice a year. My 17.5 ah 48 v battery was purchased 9/18. It is fine. I have charged it approximately 500 cycles. Usually 85-95 %. I use a 120 vac timer to shut charger off. Controller usually red lights & cuts out on a steep hill 3 miles from my destination, although it comes on again when the grade is lower. It reads 46.5-48 v when I reach the destination. 54.6 is 100%. It is usually 53.1 to 54 v when I start. I do not charge or use it in the winter, where it lives under a heat pad if there is any chance of freezing in the garage. I charge it only outside.

 

[m@Robertson]

This is settled science with an enormous amount of documentation spread all across the internet.. If you have a Li-NMC-chemistry pack, charging to 100% and letting it sit like that for any period of time reduces its lifespan. Period. Do you want that range anyway? Ok. charge it up but do so with your eyes open knowing you'll be buying another battery sooner than you would have otherwise. Instead, could you buy more battery capacity than you need and charge it to 80%? Yup.

Here's that common sense perspective requiring minimal brain power.

And an article quoting from maybe the top guy in the field (still to this day). This was written in 2017 so, as I said, long-since settled science.

How to make a lithium battery last, or…kill it, if you like.

We have written in the past about tips that will help your expensive lithium battery pack last as long as possible. This article will cover some additional information about what happens inside the…

www.electricbike.com

You can skip the brain-strain and

1. just read the sub-heads (like "Temperature - HOT is BAD")
2. Just read the Conclusion section.

The answer is straightforward. The problem is people don't want to hear it. So you hear endless rationalizations. Instead, know the real answer. Then do it anyway if thats what is necessary to enjoy your bike the way you want to.

 

[fauconnier]

The answer is straightforward. The problem is people don't want to hear it. So you hear endless rationalizations. Instead, know the real answer. Then do it anyway if thats what is necessary to enjoy your bike the way you want to.

We can make an analogy between the health of batteries and our own. In both cases we know pretty well what is best but we end up doing what suits us.

 

[Chargeride]

Korean comercial aircraft posdibly destroyed by a passengers battery bank.or laptop
Thats the end of that then
Thank god it was on the ground.

Exploding Battery Pack Could Have Been Cause of Fire That Destroyed Air Busan Airbus A321 Airplane in South Korea Resulting in Seven Injuries

An exploding battery pack or laptop computer that overheated could be the cause of the fire that erupted on an Air Busan Airbus A321 airplane at Gimhae International Airport in Busan, South Korea, on Tuesday night, destroying the plane and resulting in seven people being injured. Dramatic...

www.paddleyourownkanoo.com