lithium charging question

[MTOBATTERY]

Originally Posted by Civicsman

One or two posters have made oblique references to these problems, but no one has posted any real information.

What are the symptoms with these new Segs? What changed from I2/X2 to SE that caused the problems?

I am unsure if something has changed or if it is simply a defective part but from the customers I have spoken with the charge light goes red at the end of the charge. So, if you are not there to see it and simply plugged it in and walked away you would not be maintaining your batteries. To correct the customers I spoke with had new charging circuitry installed at Segway.

[MTOBATTERY]

Originally Posted by Gihgehls

I remember reading somewhere that over-use of a timer can be detrimental as well; something about the beginning of the charge cycle being full power or something.. it's been a while. Does this sound familiar at all?

I have never heard anything about this prior to now. I have machines here that we have used timers on for about the past eight years or so and have not had any CSB failures. If you find the information again kindly share, I would certainly be interested in reading it to understand their perspective.

[MTOBATTERY]

Originally Posted by rwoynaro

Thank you, Jason. I will go back to using a timer. I still have them. How long a day should I charge for then ? I have 2 I2s. I rotate them weekly, so one is used daily and gets plugged in basically overnight and when not gliding at work, and the other sits against the wall plugged in. Every Sunday, I swap them, with the wall-sitter being used for the upcoming week, and the other one relegated to the wall. What's my best course of action here ?

Based on your usage I would advise you to set your timer for two hours per day. This is more than adequate to fully recharge your batteries within the seven day time period you have. Have a great day!

[Gihgehls]

Originally Posted by MTOBATTERY

I have never heard anything about this prior to now. I have machines here that we have used timers on for about the past eight years or so and have not had any CSB failures. If you find the information again kindly share, I would certainly be interested in reading it to understand their perspective.

I'll try to dig up what I found.

[KSagal]

Jason,

I have heard this before, that the best way to store a LiIon battery is with about a 50% charge. I cannot understand how to do this, however.

Is there a machine, or can you make a machine, that puts a load on the battery, to bring it down to a certain place, and then keep it there?

I recall long ago in NiCad days, you could get a recycling charger, that would drain a battery before charging it, to try to maximize power retainability. I have not heard of a charger like that for a long time.

So, is there a modern day Lithium equivalent?

[Gihgehls]

https://www.pololu.com/product/2260

[MTOBATTERY]

Originally Posted by KSagal

Jason,

I have heard this before, that the best way to store a LiIon battery is with about a 50% charge. I cannot understand how to do this, however.

Is there a machine, or can you make a machine, that puts a load on the battery, to bring it down to a certain place, and then keep it there?

I recall long ago in NiCad days, you could get a recycling charger, that would drain a battery before charging it, to try to maximize power retainability. I have not heard of a charger like that for a long time.

So, is there a modern day Lithium equivalent?

Karl,

To do this fairly effective you could use the batteries on the Segway until the no load voltage is slightly over nominal pack voltage at approximately 75V. Certainly there are many R/C options for smaller batteries but for batteries this big you really almost need a digital load to get to 50% SOC accurately. Certainly someone could throw some small bulbs in series and add an LVC circuit to cutout at a specific voltage to accomplish the same thing.

I think given the special conditions that the Segway application has, storing at 50% SOC is only practical if the batteries are removed from the Segway after being discharged to that point. If left onboard users are likely to get the dreaded red light unless it is closely monitored.

[rwoynaro]

Originally Posted by MTOBATTERY

Based on your usage I would advise you to set your timer for two hours per day. This is more than adequate to fully recharge your batteries within the seven day time period you have. Have a great day!

Perfect ! Thank you very much, I appreciate it.

[dgbint]

Originally Posted by MTOBATTERY

Segway is well aware of this and has used a timer to try and overcome the charging hardware issue that they had on nearly 5,000 new SE models.

Hmm, interesting info.
Our newest Battery Reviver, known as our Battery Super Reviver ( BSR ), may assist in this circumstance.
By that I mean the BSR may revive the batteries that suffer as a result of this problem.
Of course the BSR cannot resolve any issue within the Segway itself.

See http://www.dgbint.com/dgb_products.html

Cheers
Michael
www.dgbint.com

[Amimoto]

I'll have to say MTO battery also make battery reconditioner too, it's made in USA with proper Segway connector, a simple and effective value for money plug and play reviver.
http://www.mtobattery.com/product-ca...reconditioner/


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