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BBS02 750w + DIY Samsung 🔋 52v 8ah 40T3 14s2p

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I ride my DIY 29er MTB with Bafang BBS02 750w mid drive (amzn.to/3rZJ6bX)! It's 49 pounds no battery. I'm using the 4 pound Lil Babby Samsung 52V 8ah battery with 40t3 cells. I show a picture of the battery and how I soldered the wires straight onto the nickel strip Like a Deviant. Like and Sub , Bubs

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22 авг 2024

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Комментарии : 11

@kmtnbike1117 10 месяцев назад

BBSO2 motors are sweet. I built my neighbor 2 e-bikes for a little over $2000 mostly because he wanted fancy color displays. Go into a bike shop and see if you can come out with two ebikes for that price. They love them since the motor was put on bikes they already enjoyed riding. DIY is the way to go!!!

@EBikeBuilder_ 10 месяцев назад

yeah the bbs02 is a great kit, tiny and only 10 pounds, excellent price, "legal" / 750w nominal, can put it on just about any bike, can't beat the performance for the price. Does take some fitting and work to get it set up. Whenever I use the BBSHD i am like yeah this is better than the 02, but then i get back on the 02 and Im like dang this bike was such a great deal Lol barely spent anything and its a better bike than many pre builts.

@ashpunting 10 месяцев назад

All my three electric bikes use the same battery and battery cradle, so I sometimes use my 52v 21amp battery on my BBSO2B 750w mountain bike, which makes the bike heavy but you don't notice because of the power you get from the 52v battery

@EBikeBuilder_ 10 месяцев назад

thats a great system, to use the same battery and cradle with all your bikes. I always had big heavy batteries strapped to each bike, but they are heavy. and it makes it hard to go into stores and stuff when the battery is a pain to get off the bike, but its not that hard for a thief to yoink it off while you are away for a few minutes. So i am moving towards more portable batteries myself. where I can use them with all my bikes!! I also agree 52v feels really good on the bbs02 especially I like that a lot more than 48v! I see the light with the Samsung Batteries !!

@lukewalker1051 10 месяцев назад

I just upgraded my BBSHD 29'er mtb to a new shark battery...a monsta...52v 25 amp-hr...shark Jumbo which is 6 inch tall battery. I stayed away from UPP because I wanted 'name brand cells'. Cell integrity is huge as you know and mention. Johhny Nerdout sells a 25 amp-hr battery with Samsung 50G cells...which are 21700 cells with 5000 mah...total battery weight is 13.4 lbs. Issue with a smaller battery like your 8 amp-hr build is range of course..but cell overall life aka cycles to failure occurs sooner because you use much more of the battery capacity on every ride. Further, when you increase your amperage closer to max with your BBS02 which 25 amps, each battery is pushing 12.5 amps which exceeds the 'sustainable' current of 10amp. Yes, your burst amperage per cell can handle 12.5 amp per cell, but you can't keep the throttle pegged wide open for any duration without causing overheating of each cell. Not so with a 14s5p battery. More cells in parallel to take the higher amperage load. I prefer bigger batteries to smaller batteries but all what you like. One day, 20 years from now, probably get the power of my jumbo in a battery the size of a pack of cigarettes. Safe riding and thanks for sharing your build. PS. I tend to ride my ebike about 20-22 miles each ride...averaging about 20 mph...I am a speed guy...and I only use about 1/3-1/2 of the battery capacity which allows a battery to last longer. I only charge to 80% for greater cell life.

@EBikeBuilder_ 10 месяцев назад

They are samsung 40t3 cells, the data sheet says 35A continuous? In 2p it should be 70amps? What has the limit of 10 amps? Its got 2 layers of nickel strip on parallel connections, my understanding is that can handle maybe 30 amps, but I’m not doing that much. And the soldered wires on the series connections should be able to handle 70 amps but maybe not continuous. the 02 and HD only do 750w - 1600w, the cells seem to hold a good voltage, under that load for only being 2p. The voltage barely drops when you go from 750w to 1500w. Very true i will put a lot of life cycles on this battery quickly. But its a 115$ battery that should bring me into town , 15-20 miles, I’m hoping at least for a year or two. Get me home if necessary. Costs cents to charge each time. If i know i am only going a short distance, it sure feels better not having 20 pounds of Unit Pack Garbage dead weight cells weighing me down. In a any case yes Babby Samsung had a traumatic entry into this world, and we will see about Nature vs Nurture. I didn’t know what would happen with soldering the cells, i mean I’ve read what people say can possibly happen, but people tend to say a lot of things, I like actually trying, but with 28 cells instead of 100. I have some more cells left over i haven’t used yet i can still do a large 52v battery, But still undecided on it

@paulmryglod4802 10 месяцев назад

@@EBikeBuilder_your specs are correct. My 5p pack powers a 100 amp controller without issue 35x5

@ricksanchez3628 10 месяцев назад

Ah the good old 02, compared to the HD...Half the noise, half the price, 80% of the power, 80% of the weight.

@EBikeBuilder_ 10 месяцев назад

Love the 02, great place to start with ebikes, very economical, in the 750w class it blows everything away. Minimum Viable Ebike. Its tiny compared to the HD you can barely see it on the bike.

@paulmryglod4802 10 месяцев назад

Well this answers my question. Can a 2p 40t pack work? Yep

@EBikeBuilder_ 10 месяцев назад

I think if you have good cells and use several layers of nickel strip and solder some wire for the series connections it works OK. Or get some copper plating or something. I maybe could have used 3 layers of nickel strip on the parallel groups if i wanted to try and ever do a full 35 amps per cell. But i actually ran out of nickel strip, that length is hard to judge i didnt plan that out lol. and this battery was kind of a test anyways to see about soldering the wires onto the nickel. When i use the bbshd and im giving it the full juice the whole way. it gets a little warm closed in my backpack. But I think if i put it in my backpack side pocket or out in the open air, it wouldnt be warm at all. For a 115$ battery that can get me 15 - 20 miles i am finding all kinds of uses for it. nice to go for a short ride without carrying around a big huge battery