You need a 19.5V with a 5.5/2.5mm barrel plug with 11~12.5 mm length.

Related article: https://www.xmg.gg/en/faq/portfolio/#power-plugs

Quick google:

https://www.amazon.com/Krisdonia-50000mAh-Portable-Battery-Charger/dp/B074N1B15F?th=1

// Tom

Completed test of 50Ahr 20V DC Krisdonia power bank.

It's an excellent power bank for the MPC One. I do not recommend operating it at less than 5% charge. At around 3% charge the output voltage begins to fluctuate.

Before testing, one full discharge and recharge were performed. The test was performed with an MPC One being operated (playing synths, chopping samples, recording audio). The battery lasted for 6 hours and 18 minutes.

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The power draw characteristics of both an MPC One and an MPC Live II were tested:

MPC One active, synths + chopping samples conditions:

⦁ 19.8W, 1.04A, 30% CPU load (averages)

MPC Live active, synths + chopping samples conditions without speakers:

⦁ 19.7W, 1.04A, 30% CPU load (averages)

MPC Live active, synths + chopping samples conditions with speakers:

⦁ 21.7W, 1.15A, 30% CPU load (averages)

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Battery test at 1A discharge rate, continuously (similar to MPC One):

⦁ Voltage: Remained steady at 19.66V until 3% charge. At 3% charge the voltage fluctuated between 19.43 and 19.66V.

⦁ Voltage ripples: OK. Less than 0.7V ripple at 19.6V output. Ripples are at 100ns timescale. Total harmonic distortion less than 1% until 3% charge.

⦁ Voltage spikes: OK. No spikes observed while connected. Spikes do occur when switching voltages on the power bank but the device does not permit this while under load.

⦁ How long it will last at 1A discharge (100% to 3%): 6 hours and 18 minutes.

⦁ End of discharge behavior (does it just turn off or does voltage droop/spike): Output voltage began to fluctuate at 3% between 19.44V and 19.66V. At 0% indicated output, the battery shut off with a voltage output of 19.45V.

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Battery test at 4A (for fun):

⦁ Voltage at 4A: 18.7V at full charge. No noticeable temperature change in battery from 100% to 20%. However, the load resistors I tested with burned my desktop... Tested only from 100% to 80%.