For more information please visit electronicshelpcare.net/2sc52... / electrohelpcare / electronics-help-care-... / @electronicshelpcare #powerbank#howtomakepowerbank#laptopbatterypack#
probably that charging IC will burn to ashes until you fully charge those batteries, even there is a possibility that many batteries will explode because the voltage and ohm ampere values in those batteries will not match each other, but sometimes if there is their own special bms inside the batteries, the battery will cut off the charge by itself without exploding, at most those 3 sister batteries. it will be good for you to use the mountain, let's be careful
Hello Electronic help care! I love your videos! You should be a role model for all western countries! Do not always dispose of everything, repair it! There is a small group of people here in Germany who work like you. It's called a "repair cafe". Old devices will be repaired again! I think that's great and so do many other people who come to us. I am also an active member of the "repair cafe" and have already copied some of your great tricks! Thank you for all the videos, keep up the good work and be our role model! Many greetings from Germany! Patrik
Great video, I'd just like to say that its a good idea to charge and check the voltages in each battery and only pair similar voltages together, the closer to 4.2v the better. I just built a battery pack with 6 18650's and each battery was between 4.10 and 4.15v, the charging board in the video is the same one that I'll get in the mail today and I'm going to wire them together tonight.
That's a very dangerous work, cause you need a special bms circuit for that quantity of batteries (if you dont' have the good one, batteries can get overcharge and explode) also you need to recharge one by one of the batteries to have the same voltage and don't damage the others batteries when are all connected, and that wire solded between the 2 package of batteries must be selected according with the maximum current of the circuit.
Luis R finally , i was searching through the comments because this video did not mention anything about wire gauges or battery configuration ... someone has notice how faulty this is finally.
Yeah super important information. I too was looking for this in the comments. This should be the top comment. Remember kids lithium batteries (like the ones in this video) will explode if not maintained properly.
So this explains why my batteries didnt work when I connected mine I did this without watching any video so I thought that I was gonna get the longer lasting bank instead it was at it default state charging for 30 mins and working as it was with only one cell
Nice video and upgrade! Those fake powerbanks with sand cells are no good. Just a few points I'd mention: 1) This isn't a 20,000mAh power bank. With 5 cells, this would be 4,000mAh per cell. The maximum on the market is 3500mAh by Sanyo or 3400mAh by Panasonic, both very expensive, not usually found in laptops. Most 18650s from laptops are 2200mAh - 2800mAh when new. 2) It's not a good idea to just check for voltage and then solder together in a pack. You need to measure to at least 0.1V accuracy, preferably 0.01V or better. And you need to use a battery analyzer (e.g. a Turnigy Accucel or SkyRC iMax) to measure the capacity at a 1A discharge. Some laptop batteries are fine on voltage but hold very little capacity.
Boa tarde, essas placas pode aumentar o números de células sem problema? Deve ter um limite ou não? Tipo essa dai pode colocar 12 células? Obrigado amigo.
And for whoever is watching this video there is warning for You. Please, under eny curcume stances don't solder this batteries directly, I learned it hard way, I'm actually watching this wideo in hospital after one of my 18650's blowed me nearly straight in my eyes... NEVER EVER SOLDER ENY BATTERY DIRECTLY!!! AT LEAST SOLDER TO STRAPS!!!
How the hell did they manage to put those sands inside it. The effort invested even seems to outworth the price of a single 18650 battery. What a heck!!"
i cant tell if your resoldering the nickel back on to the cells but doing that could offset voltages and they could get hot explode or just stop working
No way it 20,000mah. There are no 4,000mah in a single cell of 18650 Li-ion. 4,000mahx5=20,000?? No way.. Single cell in laptop most 2,000mah or less. Used some more. Most likely 10,000mah or less.😁
Charging is going to take a long time since its charged at 1A max(circuit limit). 2000mah x 3.7 x 5 = 37Wh (37Wh + losses) ÷ 5w = 8 hours of charging for fullcharge.
Like in another titled “how to repair bad batteries in power bank” and he buys a second one to go through all the effort of replacing a bad cell not even mentioning that now you have the new bank you bought with a few cells less. How about just use the new one and save the effort.
Thanks for exposing the sand exporters. I had the similar experience. Mine wasn’t sand, though. A “protected” 18650 from China that wasn’t protected. A disc was attached at the Negative that had no electronics in it ! In your case “sand”. But look at the “sand batteries” don’t they look very genuine? I admire these basta##d$.
u have not only to solder tue negative Battery Terminals together but.also the Positive Terminals in order to make a 5P(5parallel) battery configuration. right now u use effectively only the 3 batterys
