I have a 15 IZIP E3 Dash, has around 220 miles on it. During a full charge it always read 45 miles max range. I just took my 1st long ride took the battery level to zero.

Upon charging it back to full it now read 40 miles max range. Could I have damaged the battery by running it to zero power? I can't see why max would go from 45 to 40 miles for no reason.

You shouldn't damage the battery by fully discharging but it's possible the fuel gauge re-calibrated and the range was adjusted based on the revised capacity of the battery. Tough to tell whether the battery fuel gauge is accurate unfortunately.

Lithium batteries don't like being fully discharged. My experience though is that after a few charge cycles where you DON'T fully discharge them they should come good again.

Fully discharging lithium batteries on a regular basis is not a good idea. Also, Lithium batteries don't like being left fully charged without use either. If your not going to use the battery within 2 days or so you would be best to only charge it to 80%. Lithium batteries are very powerful but also a little finicky.

Anthony

BMS should protect your battery from going too low, but as indicated above could still be a problem. "SOMETIMES", balance charging (leaving on the charger for a couple of hours after fully charged --- or longer) will bring it back. I won't charge my batteries unless I'm in the house though, so this could be a problem for you.

Boy this is all new stuff to me. Seems like a pain to maintain to peak form. But its one heck of a toy these ebikes. Thanks for the advice.

I overwhelmed myself with this info at first, but then decided to just charge and ride and see how it turns out. If my battery doesn't last as long as it should, then I will buy another one and analyze my charging regimen.

Was it a much colder day?

Around 45-50 degrees when I rode the bike. USA degrees

Was this colder than the day you saw it say 45 miles? I've been riding on 25-30 degree mornings and I can see a drastic shift in my battery level when I'm out too long , or when its windy. As long as I keep the battery indoors at home and at work I don't see the problem. One night I experimented and left the battery on the bike overnight in my unheated garage. (25 degree low)When climbing the biggest hill on the way to work the next morning, the battery indicator went to zero. When I got to work and warmed up the battery without charging it, by bringing it indoors, the battery said full charge all the way home that same day. Since then I always keep it warm and I haven't seen it do that again. It helps that the plastic casing around the battery is black, on warm afternoons I put it back on the bike in the sun.

This ^^^

What was the difference between the two days? Was the lower capacity on the colder day?. That would be normal.

That's good in the winter and bad in the summer, a black battery can get too hot in the summer IMO so in the summer I would park my bike in the shade if my battery case was black... Heat can effect the battery negatively too, not so much the power but the life of the battery...

I bring the battery inside to stay at room temperature when not in use. I too noticed that leaving it outside in the cold temperatures affected its performance somewhat, and gave inconsistent readings from the display.

I got a response from IZIP on the matter.

The range on the screen is not 100% accurate. It’s more of a snap-shot of all factors on the bike right now. This range guesstimation is extrapolated from stored energy and rate of being used, and this can easily vary greatly every second while being used.

When batteries are new, they may lose a bit of capacity right away, but be very stable over many months going forward.

I am currently having a problem with charging my Bionx 360 HT L battery.


In Short:


Battery purchased approx Aug 2012
2000 km done on it
I rode the bike recently and battery was nearly to zero
Left overnight not on charge
I put it on charge the next morning but noticed that 24 hours later it hadn't charged.
There is no light visible on the charger. Nothing red, green or amber
Battery is beeping approx every 1/2 hour
G2 Console still turns on. No error codes.
Voltage checked via diag mode is 36.8 to 37 V


Suspecting a deep discharge problem, I tried 'battery recovery' by lifting the back wheel off the ground and turned the cranks whilst having the charger connected and console off. I did this for 5 mins and the battery began beeping approx every two minutes. But still no light on the charger.


Any ideas? Severely depleted battery? Broken charger (most likely)?


How can you help me with this?


Sam

BionX Diagnostic At-Home Battery Recovery – NYCeWheels.com What voltage? If its a 48V battery that method is not recommended, if it isn't then you got to do it longer, a minimum of 15 minutes...

It's a 37V. I think the key issue is with the charger. There is no red power light showing when it is plugged in. I think it is broken.

I'm not sure about BionX but on my Easy Motion bikes batteries sometimes what happens is that the battery turns itself off aparently. I'm not sure of the technicalities but if you put the battery on the bike and then switch it on it wakes up. You can then charge it.

Give this a try and see what happens.

Anthony

Did you check the outlet the charger is plugged into?