Digitakt modified with internal battery

i deliberately tried to find a thinnest powerbank with relatively “wide” surface area to make it feel less like “something’s poking out of it”. i wasn’t able to make it run out of juice yet but i can say i was able to get it down to ~73% after a 2.5-3 hour long session, so i think it’ll run veeeery long. then again this was a fairly expensive powerbank, which is imo actually geared towards "laptop"s. as mentioned, i bought this because this was the thinnest powerbank that is 12V - 2000+ mAh and i knew this would last for many many hours connected to a ST.

this is the exact item i’ve bought:

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btw most of the time i use this as a stand. since it consists of 2 separate pieces, having the battery in the middle doesn’t hurt at all. (in fact I used this with my OT before I modded it with internal battery, along with the velcroed powerbank i mentioned above)

I think this is the only reasonably clear picture I took of my stand, it’s probably hard to tell from this angle but there is a brace bar across the back that I was thinking about replacing with something that has my dt/dn vesa mounted to it so I can use the same stand for both. I like it because it’s not at a fixed angle, I think there are 3 you can set it to.

looks really nice and sturdy, and multiangle is a big plus. i’d cop this for my DT since it doesn’t need the powerbank! :smiley:

It’s pretty sturdy for an ABS 3d print. I was considering the possibility of 1 power bank shared between both digi’s so it’s good to know you found one that’s pretty robust, I was hoping to find a less expensive one but it may be a case of “you get what you pay for” thanks for all the info, I appreciate it.

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I’m using an Anker PowerCore 21000 which works reliably for years already and fits underneath the DT/DN (I’m using Velcro) putting it at a nice angle.

Same for me, I will remove the battery pack that i have installed in mine, external battery with birdscable will be better !

A year ago I replaced the dead battery in my iLoud with an almost identically-specced battery for remote-control cars. It was too big so I gaffer-taped it to the back with cable running through to the inside.

After six months or so, I noticed that the battery had swollen, so I clipped the wires and disposed of it fast.

I worry that this could happen unnoticed inside a Digitakt or similar, so I use an external USB-C pack plus birdcord, which is excellent. Still looking for a neat way to attach the pack though.

Here’s a hint — buy a flat magnet that looks like a coin. They sometines come with a sticky tape on the other side. Stick it to the powerbank and you’ll be able to temporary magnet in to device case.

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Genius

I took your advice, although I ended up with these huge magnets that really keep the battery in place. Gaffer tape is a temporary solution (probably).

It works super well. Angled across the back side of the bottom, it angles the Digitakt up on a table. angled front-to-back, the battery is between the thighs when it’s on your lap.

The big batteries are good for some extra air-circulation too, if things start to get warm.

isn’t it kinda dangerous to sandwich magnets between an electronic device and a battery?

I think electromagnetic induction requires a magnet around a coil or a coil around a magnet, I don’t believe the magnet will transition to electromagnetic just being in contact with an insulated battery pack. I’m not Bill Nye though so I can’t guarantee this is 100% accurate.

You wouldn’t want magnets around an older laptop with a mechanical hard drive, that much is certain.

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I don’t think so. I mean, a laptop has one of these inside I, and Macs at least have magnets everywhere these days. I did google it quickly, and magnetic fields don’t seem to make any difference to battery performance.

I do not charge it with the DT still on top though.

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magnets can corrupt rom/ram flash memory too, and especially bootloader. i bricked a phone like that once. i think if it functions like normal now, then its probably fine. you have to have strong magnet or place one close to a memory chip, to affect it.

have you tried finding sticky velcro tape?

Haha that sure sounds quite hazardous even me knowing nothing about physics

I’m sure it’s fine, and if I did have a battery fire I’d have more to worry about than my Digitakt :slight_smile:

I have a few rolls of velcro tape, but you really need to rip the sides apart. I feel like I could end up doing more damage.

I should probably email Elektron support to ask

Edit: also, there’s a lot of space inside the Digitakt before you get to the electronics from the bottom of the box. Now you have me worried though

(edit: spelling)

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I need this too! Damn!

Unfortunately I think their official position would have to be anything outside of the intended use is at your own risk and could void your warranty, I don’t want to approach this from a negative standpoint but I think that’s realistic for a business to give that kind of answer. First off, I don’t even know if magnets can damage an eeprom or not but since I don’t know, I might look at the board and find the manufacturer of the eeprom or whatever other ram chip is in question and try to contact them directly with the question since they aren’t directly involved with your warranty but they will know the specs of their product probably better than even Elektron support.

I’m not intending to steer you in any direction either but my thinking is if you’ve invested a considerable amount of money in the Digitakt, and then in the battery pack itself, you probably could look at a solution like making or commissioning a piece that is either plastic or light metal like aluminum that acts as a retaining clip using the vesa mounts on the bottom. This is just to convey an idea visually so please don’t try to use this quick MS paint mockup as a blueprint but if you like the idea, it could be used to help you convey the idea to someone you are paying to fabricate/3d print/however make it for you. That would then eliminate all things sticky, magnetic, or questionable and from your pictures I believe your battery pack will certainly sit between the vesa mounting holes. Hope this helps but don’t take it too seriously, just as an idea to help you think outside of the current box you seem concerned to find yourself in.

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