Raspberry Pi Power Supply: Nokia AC-10 + AC-16 [Review]

The Raspberry Pi is shipped without a power supply — there is not even one specifically available for this board as far as I know. Any micro USB power supply with a least 700 mA should work. But I did not want to rely on no-name products since the board should run continuously and the web is full of reports of counterfeits. So I’m currently using a Nokia AC-16E power supply, bought directly from Amazon (not on the Marketplace). Additionally, I bought a Nokia AC-10E (more or less for free, as their combination allowed free shipping). Based on the way the two Nokia supplies were packed and labelled (including safety marks and QR-Codes) I believe they should be genuine.

From left to right: OTB TR-005, Nokia AC-10E, Nokia AC-16E.

I tested the Nokia supplies and another (cheap/crappy?) one from OTB I already had lying around. Update: As requested in a comment, I have also added measurements of the on-board voltage between TP1 and TP2 (more information about these pins can be found here).

Power Supply Price (ca.) Output Voltage On-board Voltage
On-board Voltage
(attached devices)
OTB TR-005 3.- € 5 V / 1,000 mA 4.90 V 4.78 V
Nokia AC-10E 7.- € 5 V / 1,200 mA 4.88 V 4.82 V
Nokia AC-16E 13.- € 5 V / 1,000 mA 4.75 V 4.66 V

All three of them were able to support the Raspberry Pi board with several connected USB devices (passive hub, keyboard, mouse, wireless adapter) and a connected monitor (HDMI). There wasn’t much difference between them, all three ‘consumed’ about 3.8 W (6.7 VA) on average (1 hour; varying workload) and I did not notice any glitches. Still, a power drop was noticable when comparing the on-board voltage with and without any attached devices (sd-card only).

With the Nokia AC-16E power supply, the voltage dropped below the recommended 4.75 V.

In conclusion: I think I will stick to the Nokia AC-16E, as I’m currently running my Raspberry Pi only with an attached wireless usb adapter. If I notice any glitches, I can still switch over to the Nokia AC-10E power supply. Something that looks beautiful is not necessarily always better… *sigh*

Update [2014-11]: I’ve in the mean time switched to the Nokia AC-10E supply which seems to be more stable. Also I am running a second Raspberry Pi B+ now with a 2 A power supply.

8 thoughts on “Raspberry Pi Power Supply: Nokia AC-10 + AC-16 [Review]

  1. Please measure the voltage between TP1 and TP2 with a multimeter while the Pi is running with/without any attached hardware and report the measurements. I have read and seen on videos that 2 power adapters with the same specifications can act very differently. One can let the voltage drop to 4.7 while another one keeps a steady 5V. I want to know how those Nokia’s fare.

  2. I bought the Nokia AC-10e charger following your recommendation but unfortunately it has been nothing but trouble. Ethernet keeps getting disconnected every 3 secs. Wireless network adapter is not working. Neither USB pen drive nor 3.5″ external HDDs are working. My MCE remote stops working 5 secs after OpenElec boots into the user interface. It’s a total mess.

    I had no choice but to go back to using my 7 port Powered USB hub as a power source. I dearly wanted to get rid of it because it looks damn ugly under the TV to have a big hub hanging from the Pi.

    I measured the voltage between TP1 and TP2 while using the Nokia AC-10e and surprisingly the voltage is stable between 5.02V and 5.05V. This is excellent, so I have no idea why its causing so much havoc. Unless we have a concrete explanation for why its happening and what can be done to fix it, I would not recommend this charger to anybody.

    • I’ve switched from the AC-16e to the AC-10E and I’m using it without any trouble for a few months now. Are you sure that you have bought an original adapter? Besides that it’s hard to give any suggestions… maybe the combination of your peripherals reacts more sensitive to the type of power supply than mine. Kai.

  3. My original AC-10E died after 6 months. Drops to 3.85v during boot. Also got 2 fake AC-10E, dont work with raspberry at all. Fakes are very difficult to identify, only after dissasembly. Schematics very poor.

  4. Hey guys, my question is not related to this post, but, my nokia ac-10e charger is broken 🙁 🙁 :(, could you send me the link you’ve bought this ORIGINAL ac-10e charger?

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