I actually scaled and stretched an 18650 holder I found on thingiverse. But someone on fb diy battery group posted a model they made. I'll try to find it.Super cool! Did you download the STL file for that or design it yourself? Is it shared anywhere? I'm not a 3D printer wizard but I have one and would like to give that a go...
I have the BH kit and measured out the tinned copper buss bars, so I can make a second set for the battery only get I also purchased. If anyone would like my diagram with all the measurements I will post it here. I have measured all the bars and the aluminum washers supplied to help reduce the need for electrolysis suppression greases. I created the file in Word if you have any problems opening it let me know and I can save it in a different format.
1/8th aluminum, ~ 40mm x 105mm, ~ 140amp handling (should typically do about 25-30 amps on this battery but technically 2c discharge would put us up at 110 amps.What material/thickness busbars are you machining? What is the hole spacing?
Would really appreciate if you posted the diagram.. About to buy 3 sets of these battery cells and will DIY the buss bars and some kind of holder.
TY!
Would really appreciate if you posted the diagram.. About to buy 3 sets of these battery cells and will DIY the buss bars and some kind of holder.
TY!
I had to use a socket on an impact drill for a few, and one I had to put a wrench on it and do a sharp blow on the end of the wrench.I hope this drawing will help you. If you need any measurement or I failed to include any measurement just ask. I do have a question for the forum, I have nut on One cell that will not come off or loosen. I have a 19mm open end wrench that I have cut both sides of the face down to a 3.2mm thickness centered to the handle of the wrench. By centering the cut it keep all pressure down the center helping to eliminate any twisting while applying pressure.
I can not get One of the nuts loose much off the stud. It is locked all the way down against the stud head. Does anyone know what might have been used one these originally. I can not apply heat, or freezing because they would not be good for the battery. I do not want to have to cut off this original nut to move at all. I have applied a lot of torque so much I worry I might strip or damage the studs threads. Anyone out there with any ideas other than cutting the nut off in pieces please post them.
what size wrench were you using to hold the stud in the battery while using the impact?I had to use a socket on an impact drill for a few, and one I had to put a wrench on it and do a sharp blow on the end of the wrench.
what size wrench were you using to hold the stud in the battery while using the impact?
Crescent wrench, slim?what size wrench were you using to hold the stud in the battery while using the impact?
There are also some that come with different style of nuts, most of them take a ~22mm wrench, but others take a 17mm I believe. I have taken over 800 nuts off at this point and can agree on the different types, you can tell by the sheen of the metal on the posts as well.There are metal posts on one end and aluminum on the other with matching nuts. I have 64 of these cells and found you get binding when you put the metal nuts on the steel posts. Keep your nuts in the right place.....