2

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
-2

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

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.