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Battery adapter teardown and Sony A6000 power-off current draw

Posted on Wednesday, July 19th, 2017 in Teardowns by DP

 

poweroffcurrent-600

Kerry Wong did a teardown  of a battery adapter for the Sony A6000 mirrorless digital camera and measured the poweroff current draw of the the camera:

With the battery adapter on hand, I decided to take a look at what’s inside and then use the adapter to measure the power-off/stand-by current of the Sony A6000.
I was not expecting to see much inside this battery adapter. After all, all it needs is the connection between the battery terminals and the input power jack and a resistor between the center pin and the ground in place of the thermistor that is used to sense the temperature of the battery pack. At the most, it might also include a reverse polarity protection diode.
But a quick measurement suggested that there must be some active components inside as the adapter itself draws around 17 µA current when connected to the power source. So clearly, there is some active circuitry inside.
Upon opening up the battery adapter, I was surprised to see the circuit board inside.

More details on Kerry D. Wong’s blog.

Check out the video after the break.

This entry was posted on Wednesday, July 19th, 2017 at 11:38 pm and is filed under Teardowns. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

4 Responses to “Battery adapter teardown and Sony A6000 power-off current draw”

  1. KH says:

    Wow, after reading that, I have no desire to buy any Sony cameras, ever… My cheapo Nikon specifically mentions that a capacitor will keep the time/date running for many days even without a battery. No such note on standby or no battery specs in the A6000 user’s manual.

    After looking at forums discussing the horrors of this A6000 glitch, there is one very promising lead:
    https://community.sony.com/t5/Alpha-NEX-Cameras/Solution-to-Sony-A6000-battery-drain-even-turned-off/td-p/512298

    Still, I have misgivings about using cameras for video. There was one guy doing time lapse and he discovered the lower end digital cameras can’t handle the wear and tear of 24×7 video shooting.

  2. KH says:

    Read the linked article. The A6000 has an unusually high standby/sleep current. The adapter’s quiescent current is not an issue, but the A6000 sleep current of 4mA is definitely an issue. Most high performance (>200MHz) MCUs can sleep in the 20uA ballpark. A sleep current of 4mA is unacceptable, plain and simple.

    There are many forum discussions on this issue, which drains batteries very fast. Too many to be isolated cases, so it is really poor form of Sony to let this fester with a camera like the A6000, which isn’t exactly cheap. Now, we should be seeing Sony getting these crippled units fixed, but I don’t see that. So one can add this to Sony’s long list of shenanigans that shortchanges customers.

  3. KH says:

    A power-off current draw of 4mA for the Sony A6000 is a defect, product recall territory. It hits the camera battery with unacceptable wear and tear for no reason. For light users, you are now forced to either spend much more time caring for the camera, or else you will be deep-cycling the battery all the time.

    You didn’t pay your hard-earned dollars to be forced to care for a crippled camera, so the onus is on Sony to fix things. Yet Sony is not scrambling to help their customers. Well, what does that tell you about Sony?

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