Random Great Deals 2020 [Serious]

For now, my board tops at 40km/h and I feel like it would be nice to go a little faster. But my main concern is that I am kinda heavy and live on a hill and I would rather not have to walk and tow my board :laughing:

2 Likes

Swapping batteries, unless you’re increasing the voltage, won’t help you achieve a faster top speed.

You should get a smaller pulley for your wheel, or get larger wheels

1 Like

7.5ah will go SO QUICK at full tilt. I think that’s part of boosted’s special formula. Low amp draw, high discharge cells.

1 Like

I totally forgot about gearing lol, I will have larger wheels but I thought this meant going faster

I mean the battery is for a different board.

1 Like

I think the 30t is the cream of the crop(for 21700, I want 32xxx to mature a little bit more 8) ). You basically get a123 levels of performance (if you’re living by mooch’s rating. I do, personally.) With a full 3000mah battery.

(Again, imo) 40t is worse to the 30t due to increased thermals at the same amps, and the marginally larger amount of sag. I don’t care about the increased range

Have I made it clear I seriously hate sag? :sweat_smile:

Sorry for all the edits I’m just trying to be coherent o_O

2 Likes

Similar to any high discharge 18650. Too hot degrades the cells.

Cold performance is just okay, but much better than other cells.

I have 15s2p in a hummie with 2x focbox and a smart bms. Had to widen the cavity a bit.

Bottom Line: This is an extraordinary cell that I am rating at 30A. The two cells I received from EnerCig and the two from Nkon appear to have come from the same batch.

The datasheet has a “maximum continuous discharge” rating of 70A in the datasheet. But at that temperature, about 85°C, the cell will have a significantly reduced cycle life. This rating is an absolute maximum, not a level you should operate the battery at for every cycle. To allow direct comparison against other batteries I am rating this cell at a level, 30A continuous, which limits the temperature to 60°C to ensure good cycle life. Above this temperature the cell’s aging accelerates significantly.

I have 3 boards with these cells. 12s2p 2x6355, 12s1p predatorboards esc+hubs, 15s2p hummie deck hummie motors. I remember @bigboytoys running 14s1p per motor (4wd). 1p per motor sounds about perfect.

The batteries have a bit strange behavior. They charge up to 3.6v/cell, but quickly drop to nominal 3.3v/cell and kind of stay there until empty. So you only get the “full charge fast fast” effect briefly, but they stay strong for the rest of the ride.

Range is what you expect from 2.5ah/cell. 12s1p is 99wh. 20wh/mile or so. They have low internal resistance, but not crazy low. They do sag, I think I have 4-6 volt swings during a ride. But they feel strong. I don’t think I’ve managed to pull more than 70a battery total from my 2p packs.

Though mooch rated them continuous for just 30a, they can push a lot more for a few seconds at a time. Up to 120a.

The 12s2p was my first build, and gave me a huge margin of error for my n00b fuckups. Probably would have killed/damaged like 3 normal packs.

I really like these cells, but they’re bulky, heavy, relatively low capacity, and relatively expensive (usually). I’d put them in a 1st build and in a cold weather board.

I’ve posted often about these cells. There’s other crazy characteristics, like you can charge them to 4.2v without much ill effect, you can charge them at 20a or more (amazing for regen braking).

12s1p 99wh is perfect modules for air travel too, although diy packs… not really.

4 Likes

I said if I remember correctly! Im gonna take my ‘get out of jail free card’ that comes along with the statement :crazy_face:

Thanks for the correction though :+1:

@deucesdown arent you also in the choo choo group buy? Have you done any calculations as to how many of these would comfortably fit in the cutout?

If you haven’t, I can just do it myself… I just figured I should ask lol

1 Like

Hmmmm! But bigben single stack probably won’t deal with the height.

2 Likes

I want to do so much to modify that board, its battery cutout is just slightly too small in almost every direction for what I want from it ;_;

2 Likes

Some photos of the 15s2p single stack

2 Likes

And looks slightly too big in Alessio’s build, inviting mayhem. :slight_smile:

2 Likes

Cool build, does that battery fit into a bigben single stack enclosure? How heavy is the board?

Board’s heavy but I don’t think unusually so. I don’t have a bb singlestack box. I think it could be made to work with a thick gasket, but the doublestack box will fit comfortably.

My psychotiller box needs a bit of gasket to squeeze it in.

Will warn you, 3.3v * 2.5ah * 30 cells = 247wh, at 20wh/mile (9wh/km?) that’s 12 miles (24km?) on a good day. staggerstack 26650 I do not think will fit a doublestack box (I could check if you’re considering this).

3 Likes

I’d like that thanks a lot. But no rush I am not close to starting that hummie build lol. The deck isn’t even here yet.

1 Like

I agree I have ordered 500+ cells from battery hookup. They are legit.

3 Likes

Onewheels use these A123 batteries I can confirm they are legit beasts.

This is interesting timing because my onewheel appears to have a broken BMS and will now need a replacement.

Time to diy a battery and these show up…

I would have to add a solid inch of thickness to the rear footpad

exterior parallel would probably be the move actually and 16*3 = 48 very conveniently

1 Like

I was thinking of ordering ben’s double stack or mega stack enclosure and running a gasket to get a stagger stack 4P. I’m used to heavy boards, but this would still be a smaller package than my big bois, and would have some interesting characteristics.

Thanks for the pics of the 15S2P, btw.

2 Likes

Yow! @Pedrodemio cracked his deck, might want to reinforce if adding crazy weight. Can’t wait to see this crazy thing. :slight_smile:

4 Likes

bummer. I have 25lbs of batteries strapped to a 9 ply flexy deck that has been okay. Could add another layer of cf to the bottom, but this thing feels hella solid.
Could also put it in a TB40 that is allegedly coming…

3 Likes

For the EU riders out there, €58 off the protection starterkit. Decrease risk of ouch ouch and possible death, yeah!

  • Triple Eight helmet
  • Lazyrolling Armored Hoodie
  • Flatland 3D gloves ( new model )
  • Lazyrolling Halos lights


https://www.ridefatdaddy.com/product/protection-starter-kit/

6 Likes