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The main thing you should be doing is research. I'm a big proponent of building your own battery packs and bikes. If you do your due diligence and buy the right components, not only will you save money but you'll get exactly what you want. Just to give you a reference point, I'll skim through...

Thanks for the response, It was 100% my controller drawing too many amps. I added cells to make a 5p x 14s pack and its not even mildly warm after long rides now. Just have to make sure I'm not demanding too much of the cells in the future, and use cell holders because hot glue is not very...

I am spot welding, the sunkko welder I'm using is junk though, good enough if the cells stay in place but they are flopping around when I hit mild potholes. I'm going to opt for some cell holders like ^Ravi suggested. I thought about doing that in the first place but I already had plenty of hot...

So, I am relatively new to the whole DIY battery building thing, but I've gone through a good amount of trial and error already. My latest issue is with the hot glue holding my cells together, it just doesn't stick all that well lol. I feel like hot glueing is the most common way of building...

I connected them in parallel first. I've read books on E bike battery building and nowhere did it mention that as a concern, in fact that's how it was done in the diagrams. As far as the draw exceeding the discharge rate, I have no idea, the controller is rated for less amps than the battery is...

I'm planning another build though, any input is helpful. I took some measurements, and a 5p/14s pack will fit almost perfectly into a 50cal ammo can. I'm planning on drilling some holes to direct air over the battery, and using the ammo can for a case. With some good wire management and...

Thanks for the input guys, I took the whole pack apart today and am assessing the damage. I have a short commute, and I was under the impression that I could build a somewhat small battery pack, as long as the voltage was correct. Not the case apparently lol.

Thanks, I'm going to order a display today, I don't have one at all. Probably going to add 2 more parallel groups as well, it's making more sense to me now lol. That will basically lower the amps drawn from the individual cells, and that will help with the temperature, right?

AguassissiM, there's 28 cells in the pack, they're samsung 30q's which are 15 amps, so in theory the pack is putting out 30 amps. I'm using a 14ga xt60 connector for my discharge wire.

It's spot welded. My connections are relatively thin too so that could be the issue. (.15mm nickel)

Well to get any type of range, no it's not enough, but wouldn't adding more P cells just increase the temperature? 4P would be pulling 60 amps into a 10A controller, seems like things would get heated.

It's a 10 amp controller.... Probably should have looked at that before I bought the batteries. lol Trial and error... Im gonna go frown at my bike for a while

Could really use some helpful tips right now. I built a 52v battery and the thing is overheating so bad, to the point that the hot glue actually melted and it was too hot to touch. My first thought is that the amps are maybe too high for the controller, but I'm not sure. I used samsung 30q...