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Right It's just a pain, but I am doing it. I start out at 2.2 V and charge at 50 mA. Once it reaches 2.2V I switch to 3.7 V and 1.5 mA. I just tested with an Ammeter. The current is flowing out at 86mA to begin with when I set it to 86 mA. That is correct. however it reaches 2V VERY QUICKLY. I...

Ok there may be a problem with this charger. I used a single 18650 cell to test it. This cell was sitting at 970 mV. I set that charger to 3.5 V and 90 mA. I plugged it in and immediately it charged the battery up to 2.5 V! And now it is trickle charging slowly now. Why did it jump so fast...

Ok will begin experimentation with the trickle charger tomorrow. I will first see if I can get a couple of old individual cells up to 3.0 with the trickle charger, and then move on to the bigger battery. I am setting up a large outside area with cinder blocks. I have lots and lots of cinder...

Ok opened it up and it looks like two cell groups are at 100mV. That is what done it. This on the end that is hooked up to the positive terminal. The BMS appears to run the negative terminal of the battery through it. There is No LED indicator to indicate that this has integrated charging...

My little brother has a battery and we want to revive it. His bike was stolen at work, he took the battery inside with him, thief did not get battery. He has left the battery sitting in his room for years and now it is dead. It's a 54.6 volt battery 10.5 A. IT is 13s3P I believe. The voltage is...

It was suppose to be 54.6. It's even written on the case. It was at 54.9. I trimmed it down though, there was a trim pot inside. Kind of a cool design how the top cover slips off. YEah the better(more expensive) charger has two Fets, and removable fuse too. Pretty sure the crappy chargers still...

Interesting. I don't know much about electronics. I am studying to be a programmer right now instead just because I don't have time or money for a MEE. I am using a little bit more expensive $40 charger off ALI express. I did have to modify the charger a bit for it to work. It was set at WAY too...

I've been using these Ali express Tang powers chargers for a long. I originally bought 3x of the more powerful 3amp, but they all crapped out without any physical indication of any electrical shorts. I would oscilloscope to see the damage or a microscope, not sure which one is used here. In any...

I will be charging the battery outside for the first 100 charges at least. I have a big back yard. I will also test a few discharges outside too first, but I fear charging more than discharging.

Yeah my BMS says "charging current: 10A". I suppose it will be ok. Perhaps I should make it a 3s3p battery though just to be safe? No idea about the cells though they do seem quality. Just an old battery I used for a long time but I bought it second hand.

No, this would BE INPUT. I thought I could just charge the battery with any old charger, but this one isn't a trickle charger by any means. It's strange because I would like to think that a laptop charger would work to charge a lithium ion battery since they also use Li ION. And a laptop...

Shoot... I just realized the router adapter is 1.8 A Output!!!! I think that's too much for such a small battery. What do you guys think? But laptops use similar adapters, so I'm not sure

Here is the manual

I thought that's what I did, but perhaps its just not a good diagram. Ok, so I need to hook up the charge and discharge spot to the same place. I hope that doesn't throw a wrench in plans. I have a 12 V internet router adapter I am repurposing for this. I was hoping to directly attach the 12 V...

Your right, I dont like the holders. How about electrical tape instead of insulated paper?

Nobody responded to this post https://endless-sphere.com/sphere/threads/battery-diagrams-for-small-12-v-light.119644/ Maybe it was in the wrong place? Any other good websites exclusive to Lithium batteries? I need info.

Hi, I just need someone to look over this very crude diagram if at all possible and tell me if this is feasible build if at all possible. This would be my first battery. I am starting small and hoping there is less chance of something blowing up dealing with smaller voltages, amps, watts, etc...

I'm also wondering if I could repurposed a 14S BMS FOR 3S2P Battery I'm building for a 12 V Light. BMSs seem kind of expensive when the balance charging feature is added in. I'm almost thinking to go without and use a imax B6 ($25 China clone) and a digital voltage readout Can this balance...

I found two waterproof lights in my junk pile. They are both 6v but I was able to wire them in series. I am testing both of them right now to make sure they do not burn out after just 8 hours of use (I just dont want them to burn out) I will need to purchase a step down converter that is...

Ok I have a new idea. Since you guys say that water just needs to 'get out' of the device, how about I get a step down converter and use this. The + - pads are so far apart I don't see this thing shorting out, and it says in the spec sheet it can be used outdoors...

Yeah, I dont think horns are really ever used other than to be a prick

A to B: How does the horn work on that? Loud enough for cars? E-HP: I GOT BURNED so Bad, they didn't even give me the proper LED CHIP or engine

YEah marty you are probably right. Best to play it safe with that $36 dollar grin, but shipping from CA hurts. I wonder if I can find the same light on amazon with free shipping. I like how the beam pattern issue is already taken care of. That's a feature I would pay good money for. Oh yeah I...

From A TO B, How about this light? you say "spend more", but I don't necessarily see that as the best solution here, How about this light though? I feel very afraid to purchase it considering the price and it's coming from CHINA with no reviews. I fear the WATERPROOF CLAIM is a lie and also...

Ok I am thinking about buying this two pack. I am really stuck on whether I should purchase it or not. The price is unbelievable. But perhaps the SMD LED board is not up to spec. Can you guys examine this picture and tell me if it looks like a good buy? The product has lots of pictures to back...