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I would like to use the XDK without the build in battery and use a external power supply instead.
But im struggeling to find the correct 3 pin plug that is used.
Does anyone know the designation?
Hello Michael, Please note that you will lose all kind of warranty rights, when you open the XDK case and supply the XDK with an external power supply directly. You can use the connector plug to add an other battery to the XDK. But this will require to use of a battery which is compatible with the XDK (e.g correct supply voltage, maximum supply current. etc.). Unfortunately I can not make any suggestions about the model of the connector. I assume you attempt to extend the battery life. Thus I would recommend to use the build-in mini USB port to supply the XDK by an external source. If it is required to remove the lithium polymer battery because of explicit requirements in your purpose, it should be possible to power the XDK solely with the USB port. But as I mentioned before, opening the case would lead to the loss of warranty. Please do not hesitate to ask if you have further questions. Kind regards, Franjo
yes it would be great to use the XDK without any battery.
I tried to power the XDK with the USB port, without the connected battery as you suggested, but unfortunatly it does not seem to be that easy. Without the battery connected its not powered at all, after reconnecting the battery it works again as usual. I guess I would have to add a capacitor circuit instead of the battery, but I am not an electrician so any help is appreciated.
I do not recommend to use own created electrical circuits to power the XDK, if you’re not an electrician or have similar experience with electrical circuits. The USB port should be still the best way to proceed. Please note that you can supply the XDK via the USB port, but it depends on the power source. For example if you are using your laptop to supply the XDK and then flash an application which requires high power consumption the XDK is not able to boot the application. Normally would the XDK drain the startup current from the integrated battery. Without the internal battery you will need an external power source with more than 500 mA. Most of the common USB adapter have 1A as output. Therefore I suggest to use an external USB power source which can provide up to 1 A. This ensures that the XDK can drain the required startup current to boot the flashed application.
Please tell me if this was helpful and don’t hesitate to ask if you have further questions.
Kind regards, Franjo
I want to use the XDK with built-in Battery AND with external power supply over usb (like Power-banks or USB-charger). What happens when the xdk is fully loaded and I dont plug it off? Will the Battery be damaged? Or is there a switch which prevents the battery from charging, so the battery is bypassed?
you can use the XDK with external supply sources even if the XDK battery is fully charged. The battery will not take any damage when fully charged, only the green LED will turn off. The green LED indicates that the XDK is currently charging, when turned on.
Further I am not quite sure, but I assume the battery won't be bypassed, but the XDK will be supplied from both supply sources.
Please be aware that a power bank uses internal logic which turns automatically off, when the XDK battery is fully charged and needs to be reconnect when its fully drained.
Please tell me if this is helpful and do not hesitate to ask if you have further questions.
I think it depends on the logic of the powert bank. I am testing diffrent powerbanks right now. I recognized that with one Powerbank the green LED turns on and off again every few seconds. So the battery starts charging and stops again. I dont think that is very healthy for the internal battery. What would you say?
I am glad to that I could help you. You are correct, it depends on the logic of the power bank if recharging starts or not.
Nevertheless the battery is equipped with a protection circuit which prevents overloading of the internal battery. The continuous change of the green LED indicates that my assumption about the parallel supply is correct.
If the green LED is not permanently blinking, there is nothing to worry about. The frequent charging cycles should be ok.