I made another post on these batteries specifically about the amperage and the risks, but that has been resolved and taken care of.
I am making this new thread to discuss if it is a good idea to purchase and use these batteries for a few reasons…
They are technical “used” but they are tested
I have watched THIS video on my batteries and it said that they have high internal resistance which I think means they are dying?
I wanted to use THIS cheapo BMS to bypass it explicitly for charging, but I am worried about the cells becoming unbalanced…
And finally) is 8s1p 8000mah pack with them for a dual 200kv setup a good idea?
Thanks a million!
Edit: I forgot the link to the BMS
Edit: AND THE BATTERIES
It is cheaper in the long run to buy high quality parts than it is to replace a board that burned down. Lipoly batteries are great, so long as they are meticulously maintained and cared for. They are dangerous otherwise, and as you don’t know how they have been treated, don’t waste your money on them. The battery of an esk8 is NOT the part to skimp on. Doing so will not work out well for you
I think I have come up with a solution. I am going to purchase some Samsung 25r Cells from BatteryJunction at 3.65 USD for a 10s3p Li-Ion with a total of 7.5 Amp Hours. This will only add about 50 USD to my Budget, bringing it to a solid $800.
Not to shabby for a sensored dual Motor setup? I mean I’m in my mid-teens and I’m a twig so I’m gonna fly
Also I already have 1 VESC I just need a second so that cuts $100
I have had both good and absolutely terrible experiences with HobbyKing. I have 12s 8000mAh batteries in my single motor board that work fine. I also have the same batteries in my dual motor board and I seemed to be blowing a cell every 2 weeks even though they were 25C cells supposedly capable of 200A.
7.5Ah will be plenty I have a 10S at 5Ah or 185Wh and can get 12 miles out of it (also a small person and I don’t floor it the whole time but average something like 15mph occasionally a bit faster if the road is nice) so I think you’ll be fine.
@kuphjr yeah given all the issues I’ve seen people have with their homemade first time spot welding 18650 packs I’m glad I’ve avoided it so far. I’ve just been using lipos for a couple of years, I’ll probably buy a prebuilt 18650 pack in a while here but just dumped a bunch of cash into quadcopter FPV gear for my other favorite hobby
I didn’t have issues building my own li-ion pack my first time. I just followed the best practices on this forum. If you ride your board a lot I think it is worth the cost of replacing lipos. After I build another li-ion pack for my single motor board, I am pretty confident in producing packs for other people if you are ever interested.
Seems like NESE pack is pretty decent from the few people I’ve seen use them definitely don’t want to be soldering the cells unless you can keep the heat transfer into the cells to a minimum would definitely go with one of the solder less kits or spot welding and if you plan to diy post a thread for the build to get tips/pointers before calling it good.
Yea, I do plan on making a thread. I think I’m just gonna do that now.
I actually just went digging in my basement and found a 90-120w soldering gun that was my grandfather’s. I cleaned it up a bit and I have used it fairly recently so I know it is in working order so i guess i can use that. I totally forgot I had it.