Customer required: - 24V - 10Ah - 10A cont. discharge current - Separate charge and discharge port We choosen: - Sanyo GA cells - Daly BMS 15A/8A Separate port with 70°C temperature protection
This is just a seven cell, 24v battery, butt three wide, yeah? Off of the same bms. I was unaware you could do that. Excellent. I need some fat-assed batteries for the boy's electric scooter. Thank you random stranger!
sorry but can't you explain what those black battery holders and the various stickers you stuck are? And then there would also be that circuit board you plugged in later. Can you put the links where you found the various materials and tools you used to assemble the battery pack? Thank you
My only suggestion will be to add the gasket insulator same you use on the side of the battery on the top and bottom or fiber glass insulators. Other than that looks amazing.
Thanks for comment. Yep, today we use fishpaper for all sides, battery pack is wraped to shrinkable foil like in video but on sides we use insulator glue for waterproof efect.
I have created a 7s 15 p battery pack with bms, and tried to use it with apc ups.. It just trips when power goes.. When i use it with existing battery in parallel it works fine
can you send me the schematic diagram of the connection of wire from the batteries to BMS and charger ? Im going to build a batter pack for my electric bike? please reply immediately thanks
@@mcells_batteries Alright, can I use the same port to charge and discharge? Would it cause any problem in the future? The BMS that I am going to use supports this feature.
Great job. Worked systematically. They say if you cut the balance leads unevenly short and long, there will be difference in resistance and the cells will be charged unevenly. Is it valid?
Nice build, very clean, thumbs up! But 2 comments from my side: -At 5:10: Too dangerous in my opinion: While welding on the second side of the battery, there should be some tape for isolation on every cell you are not working on at that specific moment. If you missplace your strips left or right or one strip falls down on the pack while handling it or something like that you´ll get a short. Also if there is a metal strip or anything else conductive left getting under the pack. -Why are you using black for the positive discharge wire???
That lap solder joint will reflow under high loads and let go, in my experience. I encourage you to consider a linesman splice or similar mechanical joint under solder.
@@mcells_batteries thanks for the fast replay. If my device has a nominal voltage of 24V VDC, would a 7S configuration be suitable or 6S is more recommended?
Question for you... I need a 4.8v - rechargeable pack for my filter system on my welding helmet. Battery system on filter isn't giving the working time I need. Any idea if this is possible with as high as 10AH and compact enough that it can hang on a belt? Appreciate any help with this...
Brother Nice demonstration and excellent clean work. I just have one doubt.. why did you use a black wire for battery and charge positive ? and why a blue wire for battery negative ?
Capacity of 24Ah? You’ll need a (insert number for voltage) S and 10P pack if using 2400mAh cells. (Insert)S5P if using 4800mAh 21700 cells. 3000mAh cells would be (insert)S8P. The first number I’m omitting is the cells in series. 7S for a high 24V. 6S for a very low 24V. 4S for a 12-16.8V and 3S for 9-12.6V. Thankfully 36V fits just about perfectly at 10S with 3.6 nominal and is close enough for 3.7 nominal cells.
Next time, build a rig for the soldering job. holding the T-Connectors is better as soldering them on the table - thats not a good solder job here. dont do this like shown here ^^
You make a beautiful battery man!! You move with such efficiency and speed. I know the video is sped up but you look like you're performing open heart surgery lol. Infact... That's it! You're a Brain Surgeon aren't you?! Lol Well done!
@@mcells_batteries my battery is charged to 29.4V. The BMS is like yours, but it turns off for some reason when the battery is discharged to 25V. can it be a faulty BMS?
