Random Great Deals 2020 [Serious]

lol at the MOQ of $1

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Amazing deal: $1.25 for A123 2.5Ah 50A 26650 cells:


They are as heavy as a regular 21700 cell, and are 5mm thicker but 5mm shorter. so pretty much a 1:1 swap for most decks, and LiFePO4, thus much longer lifetime.

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Better deal: $0.97/cell shipped
https://www.ebay.com/itm/2-used-40V-36V-block-of-96-Cells-3-2v-LiFePO4-26650-battery-rechargeable-12s8p/283217146077?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

edit: also, there is a regular deals thread, no reason to keep this BF thread alive…

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Deal above you is for the m1b cells 2500mah vs m1a 2300mah.

These cells are great for 15s! :slight_smile:

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Whoops, pulled the wrong one up. $1.15/cell.

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Their origin is also different - used in electric bus vs Hospital UPS. I’d prefer going with the safer option.

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Seems like an odd deduction to make considering you have no clue what they were actually used for. But you do you.

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May be personal, but I trust the guys at Batteryhookup more than a random ebay seller.

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i just dont like their website.
Looks like a 12 year old made it in 2003.
All caps descriptions too on everything. smh

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WHAT ARE YOU TAKING ABOUT THIS IS A TOTALLY NORMAL WAY TO TYPE THERE IS NOTHING TO BE CONFUSED ABOUT

I think it gives a sense of urgency when shopping like oh I better pick these up in a hurry this guy’s hustling.

thx for reading my TED TALK

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Who is Ted and why does he talks so much?

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Agreed. Their stuff works though.

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I paid about $9/cell for my m1b new. Paid about $6/cell for 100 m1a. This price is great even if used and need unwelding. A123 easily get 1000 cycles. 4s2p can jump start a car

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Those cells do look interesting and apparently they will ship here for a reasonable price.
Do you use those in a skateboard? From what i read they are kinda heavy for the capacity, any other drawbacks compared to 20700 liion cells?

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Low sag, high cycle life, better in temperature extremes, generally more stable.
Boosted gets away w/ a 12s1p. I think quite a few more will fit nicely in a hummie deck. Probably 12S3P or 17-18S2P.

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Like in tropical heat? We don’t get really crazy temp probably around 38-40C during the hottest season.

As for range I thought boosted’s was shit, isn’t it?

I’d like to get like 20km so I can go to the hardware store and come back home on a charge. But I live on a hill and I am going for 8ā€ pneumatics.

Should have said better in the cold, I don’t know how their high temp properties differ from other cells. Having higher discharge though, I’d expect that to be less of a factor.
Less sag means slightly more range. 7mi out of a new boosted is pretty impressive for 2.5ah imo. And I wouldn’t plan on only running 1p on anything except maybe some hubs.

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Shit range because of 1p, but excellent ampacity per p group

There are a lot of myths about how these can do 60/70/75a continuous, but mooch has rated them at 40a continuous (if I remember correctly) as the heat generated from high loads is ā€˜significantly detrimental’ to overall cycle count per cell

I think if you stuck with these cells and put them in a 3p config with dual motors that draw 25a each as batt max you could have a fairly low sag board that’s got acceptable range, albeit with a slightly chunkier enclosure

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@RyEnd

That makes sense.

@Sn4Pz

25a each is it to maximize range? In 3p and 40a cont per cell I could set double that right? Don’t know much about that science voodoo :sweat_smile:.

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3p of the cells should net you around 150a max, if not a little bit more. So if you want to ride it like you stole it, 75a batt max… But that’s pretty well above the capabilities of non vesc 6 vescs

I said 25a per motor as that seems like a fairly good number for most people, and it helps your battery not sag too hard. There’s also something to be said about lowering sag to achieve the most ā€˜ridable’ miles. My old space cell should have netted me 20+ miles, but by using all 80a available, I barely got 7 ā€˜fun’ miles, and an additional 3 or 4 miles in ā€˜limp mode’

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