I cannot run rpi 3 from 8 battery (14500) Series circuits 29.6v. I am convert 29.6v through dc-dc converter (XL4005 DSN5000) to 5v. The converter output can be 5A. But I cannot take more than 0.5A and rpi 3 cannot start

Here's a link to converter

  • Please add links to the converter you refer to. – MatsK Oct 2 '17 at 13:02
  • @MatsK The question updated – teren4m Oct 2 '17 at 13:06
  • The output voltage is tunable. How have you set the output voltage to 5V? – joan Oct 2 '17 at 13:09
  • @joan There is regulator. Voltage is right. It is test with 4 battery – teren4m Oct 2 '17 at 13:15
  • Post an image of how its all wired up. – CoderMike Oct 2 '17 at 13:44

The PSU recommended is 2.5A for the pi3, so, you'll need to increase the current.

You'll need to find a battery that is suitable to output high current. I know, for example, some 18650 batteries can output 20A on stable discharge.

It will depend on the specific properties of the battery model used.

  • I know about it. How to make it? 8 14500 can give enough power? – teren4m Oct 2 '17 at 12:51
  • I've modified my answer to add more info about it. – Luis Diaz Oct 2 '17 at 12:59
  • When I connected laptop's power supply (19v 2A) Result is same – teren4m Oct 2 '17 at 13:10
  • It is not to increase the current to beyond 2.5A as suggested by @LuisDiaz, it is the opposite, you need to make sure that the current will NOT EXCEED 2.5A if you are connecting the power supply via USB, otherwise it can cause a draw exceeding the limits of the polyfuse on the microUSB supply jack. Exceeding the limit of the poly fuse will cause the Raspberry Pi to shut down. – hcheung Oct 2 '17 at 13:27
  • 1
    What is the current of your 3.7v 14500mAH battery can supply? In fact you don't need 8 batteries, you only need 3 (3 x 3.7v = 11.1v) and your converter has a voltage drop of about 3v, so it is sufficient to supply 5v output, but your battery probably not be able to supply min 700mA required by the RPI. – hcheung Oct 2 '17 at 14:06

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