mysurveymail
10 mW
- Joined
- Apr 17, 2019
- Messages
- 20
Hello y'all,
This is my first real question to this forum. So I am asking for a push forward.
My application is upgrading my 36v 750w brush-less hub motor SLA powered EZ-3 trike.
View attachment 1
I have been using 3s3p SLA batteries for the last few years. During that time I have been scavenging 18650 batteries (200+) to "upgrade" my range, weight, and performance. So I bought a couple of the Vruzend.com 1.5 kits. I have been discharging and charging my 18650's with a couple of smart (4 slot) Zanflare chargers.
Please note that the above photo is meant to show all the typical readouts for each cell IN THE PROCESS OF BEING CHARGED. These cells happen to be in the normal state of charging at 500mA not the "NOR" or "fast test" function, BTW.
Diligently using a "Sharpie" marker to write the mAh, mR, and voltage onto each cell discharged and then charged.
My proposed battery will be 10s10p, (or 10s20p if the gurus here advise) using the vruzend.com 1.5 kit.
My concern is, "cell matching, and parallel fusing."
So I am interested in using fuses or preferably some thin gauged wire as fuses in my forthcoming parallel pack. Mostly because my cells, however very thoroughly tested, are cells that have been recovered from disparate laptop batteries. I have been reading a lot on endless sphere and other sites and wondering if the "littlefuse" strip type fuses could be used with my vruzend build? I am planning a 10s10p battery pack with cells as close in specification, voltage, mAh, and mResistance as possible. Your thoughts on this would be greatly appreciated. Better still vruzend should offer some fuses for people uncomfortable just using their (great) battery building kit.
Cheaper and maybe better still would be using thin gauged wire to fuse between the POSITIVE terminals of the PARALLEL batteries. On the negative side of the vruzend kit I plan on using their standard buss bars, as well as using their standard buss bars in the 10s series stacks. So after a long explanation I want to wind the 30awg? wire from positive terminals to the adjacent 10s battery. What gauge or what do y'all suggest?
I will NOT be using a BMS nor a balance charger. I plan to "bulk charge" to 41 volts at 5 amps (divided by 100 or 200 18650 cells). I will NOT lie down and be flamed by hysterical BMS fanatics. My 36vdc 750w motor draws a maximum of 20.8A (without regard to start up, nor the non-existent hills here in south Florida (flat, flat, flat)). THAT is also the reason why I want to fuse my low cost cells.
Any knowledge would be greatly appreciated. I don't want to get flamed or into a non-experienced based or non-scientific argument. Please help PUSH me FORWARD.
C
This is my first real question to this forum. So I am asking for a push forward.
My application is upgrading my 36v 750w brush-less hub motor SLA powered EZ-3 trike.
View attachment 1
I have been using 3s3p SLA batteries for the last few years. During that time I have been scavenging 18650 batteries (200+) to "upgrade" my range, weight, and performance. So I bought a couple of the Vruzend.com 1.5 kits. I have been discharging and charging my 18650's with a couple of smart (4 slot) Zanflare chargers.
Please note that the above photo is meant to show all the typical readouts for each cell IN THE PROCESS OF BEING CHARGED. These cells happen to be in the normal state of charging at 500mA not the "NOR" or "fast test" function, BTW.
Diligently using a "Sharpie" marker to write the mAh, mR, and voltage onto each cell discharged and then charged.
My proposed battery will be 10s10p, (or 10s20p if the gurus here advise) using the vruzend.com 1.5 kit.
My concern is, "cell matching, and parallel fusing."
So I am interested in using fuses or preferably some thin gauged wire as fuses in my forthcoming parallel pack. Mostly because my cells, however very thoroughly tested, are cells that have been recovered from disparate laptop batteries. I have been reading a lot on endless sphere and other sites and wondering if the "littlefuse" strip type fuses could be used with my vruzend build? I am planning a 10s10p battery pack with cells as close in specification, voltage, mAh, and mResistance as possible. Your thoughts on this would be greatly appreciated. Better still vruzend should offer some fuses for people uncomfortable just using their (great) battery building kit.
Cheaper and maybe better still would be using thin gauged wire to fuse between the POSITIVE terminals of the PARALLEL batteries. On the negative side of the vruzend kit I plan on using their standard buss bars, as well as using their standard buss bars in the 10s series stacks. So after a long explanation I want to wind the 30awg? wire from positive terminals to the adjacent 10s battery. What gauge or what do y'all suggest?
I will NOT be using a BMS nor a balance charger. I plan to "bulk charge" to 41 volts at 5 amps (divided by 100 or 200 18650 cells). I will NOT lie down and be flamed by hysterical BMS fanatics. My 36vdc 750w motor draws a maximum of 20.8A (without regard to start up, nor the non-existent hills here in south Florida (flat, flat, flat)). THAT is also the reason why I want to fuse my low cost cells.
Any knowledge would be greatly appreciated. I don't want to get flamed or into a non-experienced based or non-scientific argument. Please help PUSH me FORWARD.
C