🦆 Duck Battery Systems - DIY Supply Webshop

where stickers

i buy more connecotrs

3 Likes

@J0ker

3 Likes

What!?

1 Like

Restock on PCB’s

3 Likes

He sent me his last one a week or so ago. Its already cut up and wating for groups to get put on it. Good looking out though homie

3 Likes

Damn, postage is a killer to AU. @glyphiks import these bad boys

2 Likes

I have samples incoming… and yeah… the postage wasn’t cheap :sweat_smile:

3 Likes

Where was all this gear when our dollar was at parity? :rage:

1 Like

please for me?
image

just curious, is this something we can literally do a group buy for?

3 Likes

Depends on how many you want. If you’re serious you can PM me :joy:

i’m considering it :rofl:

These 21700 CompactPCB’s are not just updated with a new logo, they also got several upgrades!

The solder pads around the nickel tabs is larger, for a much easier and more secure solder job:

And the copper pours connecting groups 6 and 7 was more than doubled in size, making a more than 10AWG equivalent in copper cross section. This eliminates the need for an additional piece of wire or braid, streamlining the assembly process:

10 Likes

one product I would request I guess I forgot to ask before, is an adapter cable from the dri kit pcb jst to smart bms jst connector. hmm maybe you could put the through hole pins for that JST size on there too… nah that is not needed.

Nobody still has done the idea I had to make a 10S on the 12S compact PCB and use the extra space for something cool besides BMS/switch.

1 Like

That’s a good idea that I will look into. It would have to be a custom cable though, and I cant imagine it would be cheap. Maybe if I start stocking SmartBMS’s then I will make that happen.

Who? My dude, these are DBS KitPCB’s :stuck_out_tongue_winking_eye:

2 Likes

oh man did not even notice the sleek logo changeover.

1 Like

20s9p Tesla battery for my buddy’s ebike :metal:

This will be my largest battery to date (180 cells! :flushed:) as well as my first high voltage battery. Can you believe that everything I have done up to this point has been 12s or less?!

I also thought of a new technique for fishpaper-ing p-groups in a brick battery (though I’m sure others have thought of this before too).

As anyone who has made a brick battery will know, getting all the p-groups to fit together nicely is always a challenge, especially if it’s a stagger stacked layout.

Trying to apply whole sheets of fishpaper to each groups means carefully and frustratingly pressing the paper into each crevice between the cells to make sure it perfectly follows the peaks and valleys in the p-group, otherwise when you go to assemble the pack, your p-groups wont fit together nicely! And then your battery turns out larger than you quoted the customer, it doesn’t fit in their enclosure, they get mad, blah blah blah.

So what I figured out is that using small strips of fishpaper rather than one continuous sheet means you can get groups that fit together perfectly, every time, with minimal effort!

Basically my thinking is that cells in a stagger stacked layout only have two points of contact with their neighboring p-groups, since that’s the nature of stacking circles (or cylinders in this case). So we dont need fish paper covering every square inch of the p-group, just im the two spots where cells contact!

By cutting a bunch of 20mm wide fish paper strips and applying them to the faces of each cell that contacts the neighboring p-group, you get full protection from abrasion while using less fish paper and, most importantly, ensuring that your fish paper is as compact to the surface of your p-groups as possible so all your p-groups fit together perfectly!

20 Likes

congrats on ur 1st big pack i can tell u from doin a 14s14p two 14s7ps for my scoot it was fucking time consuming painful endeavor especially since that was my 1st pack i ever spot welded after tons of practice welds. The rebuild didnt take no where near as long as the 1st time around but it was still pain in its purest form XD.

2 Likes

Yep this is definitely going to be a journey! The hardest part that I’m anticipating is actually getting the completed battery inside the frame bag on my buddy’s bike. We’ll see how that goes :metal:

2 Likes

keep us posted and yea thats defo gonna be the biggest headache is fitment especially sinceik that smart bms for that pack probably is the size of a small dinner plate

1 Like

Damn, thats hot. Nice one dude :ok_hand:

2 Likes