Recent content by JamesG81

There are several questions in the original post. You can pick any and answer. Also I stated that I am open to getting more education on safety of lithium batteries so you can do that if you like. Here is a specific question: why it is common belief that a deeply discharged lithium battery...

From this website: https://www.chemistryworld.com/news/fire-starting-battery-dendrites-go-with-the-flow/3008867.article If the above site description of "dendrites" is correct, my understanding of the article is that dendrites are a byproduct of charge and discharge cycle and not about how low...

OK, it is done and the following link is that thread. Thanks. https://endless-sphere.com/forums/viewtopic.php?f=14&t=102710

The following post was written as part of a question I asked regarding removal and charging of a deeply discharged e bike battery. That thread subject evolved into a question of the safety of charging a deeply discharged lithium battery and someone suggested to post it in this forum for a...

I have a low opinion of Battery University if it is the same site I was on sometime ago. Although I don't know much about it. I just remember looking up something and was led to that site and what was on there did not seem right. On the other hand, that video I posted of the Michigan Engineering...

I am open to be educated more about the safety subject of lithium batteries. I like to know what is the difference between a new and an old battery like these that are very low in charge. Why the danger increases so drastically (it seems that is what you are implying) if a deeply discharged...

I appreciate the emphasis on safety. It got me to research how such batteries can catch fire and even explode. This video shows how: https://youtu.be/0nrsoMsEMNU?t=396 In the video they have overcharged the battery by over 20 amps on purpose to cause an explosion. If this battery is going to...

Just hooked up everything as was shown in the last post picture and connected to the electrical outlet outside the house. The light bulb came on dim for a few seconds then shut off and nothing after that. I think the original charger won't charge until it sees a certain voltage or something...

The battery is setup for charge as show in the picture below. Just wanted to run this picture here to see if anyone sees anything that is not correct. I take responsibility for this no worries. Thanks...

OK Voltron thanks for clarifying what you meant. So the increased fire risk remains. I plan to install everything back into the bike's frame (where the battery storage is) and bolt everything up and use the original charging plug to recharge. I think the extra big frame made for the battery and...

I originally measured the voltage of each cell of the battery as the following picture shows: Picture one: https://docs.google.com/drawings/d/1dpWDc9h2wAsuJIgB4fFqe5sLvz7QoQ3ELrzjK3l0DUA/edit?usp=sharing But I was informed the correct way to measure each cell is as the following pictures shows...

The Wattage of the bulb is 25 W.

I made a diagram of what I think you mean by using an incandescent bulb in series with the battery and charger to charge up the depleted battery. The image below shows it. Is this correct? Thank you. https://docs.google.com/drawings/d/1CVfp7gInvTLOnR3fqE5VOuxCRj33LKUilf8F81SDuJk/edit?usp=sharing...

Thank you for the reply and the caution regarding possible increase risk of fire. I will charge them in the garage on concrete or metal away from other things. So if I need to charge the pack at very low amperage of 100mA or less, how do I do it? I was thinking of using the original bike...

https://drive.google.com/file/d/11vFqrn1OM5igwxhMF9GJTxsNHwhBdnJQ/view?usp=sharing https://docs.google.com/drawings/d/1mVbsNa8781-4wsF-6Ig7g3Egf0JxwTKuJCOTAUZPBow/edit?usp=sharing The above links show how the voltages of each group of 5 cells were measured and what was obtained. The voltage...