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Thanks Gordon, thats what I thought. When I copied out the info sheet for her, it said: (Plug the charger input plug into your AC power outlet (before plugging the charger into the battery).

My sister followed the instructions when charging her battery. Plug into the AC first, then attach the battery. Every time she did this, there was a spark at the battery connection, and finally the battery refused to take a charge. Someone said that you should connect the battery first and...

I'm looking for a replacement for my original battery from a bafang addon kit. That battery was a 48v 11.6ah (557wj). Is the 48v 14ah ultra slim battery (lg 3500 18650 cells) compatible?

How about this replacement?

Sorry, that is what we got from bafang.

This might help. It is the charger with description.

It’s from bafang direct and it is a front wheel kit, includes battery, motor, charger, cables and handle bar controler. https://bafangusadirect.com/collections/motor-kits-with-battery/products/copy-of-complete-bafang-front-hub-27-5-ebike-motor-kit-battery

So, I should buy a new charger from Bafang?

Someone on another site recommended this charger replacement. I’m 72, this motor kit was a gift to my sister, so I want to get it right. I know very little about volts and watts. This should work, right? Or is there a better one? The price is good. I thought these would be much more money.

She continues to follow the proper plug in procedure according to her manual.. Also, there are far too many people with these bike batteries as well as the comments I see in my RC aircraft groups that leave there chargers unattended. Most importantly I think that there are proper methods of...

She took her battery and charger to a bike shop. They've seen this before and suggested plugging into the battery first, otherwise they saw no major problems. She was worried about "burning down the house", so she used the outlet in the garage. No spark... Without being there, I am unable to...

Well, she is stopping in somewhere today, so I'll report their comments.

She lives 3 hours away. I told her to take the cable to the nearest bike shop that handles ebikes and they might be able to point her in the right direction.

My sister sent me a photo of the cable end that inserts into her battery. She said it sparks when she plugs it in and the end looks charred. What can that indicate? She has her charger powered first and then connects the charge cable to the battery, as instructed for proper sequence. ( bad...

Thanks for your thoughts..

I'm a young 70 year old and I added a bafang kit to my Terratrike rambler and it works very well. I was advised to get the 500c color display. I'm having difficulty seeing much in direct sunlight, as I see others also have with this. I can see the power setting and have lived with this. I...

So, I had a bafang front motor kit installed on my sisters bike, and she is asking about how to ride it. She has the mechanical gears of course, and now has a number of levels of assist, plus the throttle. What do most people do on this? Of course just using throttle is not what she really...

Thanks JRA, think I tried to understand the long answer. I got 29 also and that seemed off, but I'll go with 29 and go for it.. Thanks a lot btw you guys..

yes... what does that mean in inches then? Sorry, I'm a bit lost here. Just want to take the right option. I did a conversion etc. Is that the 29 inch option?

My sister owns a 2015 women's Trek Verve 3 bike. We want to surprise her with a bafang emotor kit, but I'm unsure of her wheel size. I'm given the choice of 26, 27 or 29 inches. She might have a 700c... Which wheel size should we pick? I don't want to call and ask her obviously. I could...