External 1S LIPO on M5Core2 BUS PIN1 and PIN30?
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I want to extend the battery life of the M5 Core2 unit (communicating through WiFi every 5 seconds, and that takes a lot of power unfortunately).
I tried to find information about it, and want to confirm that it is OK to connect the external Lipo battery to pins 1 and 30 on the "BUS expansion port"? And that the battery will be charged when connected to the external USB power? And I don't need to remove the internal 500mAh battery, since they would be connected in parallel anyhow?
Since I need the IMU as well, I guess I'll sandwich the existing Core2_Ext and put a simple header in between, unless someone has a better suggestions (I don't have the small JST connectors that I could use to replace).
I did ask the https://chat.m5stack.com/ and it basically agrees if with me, but I'd like to confirm this with fellow human beings to be sure :)
Additionally, are those correct locations (as depicted in the picture)?
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Anybody?
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@skyflyer said in External 1S LIPO on M5Core2 BUS PIN1 and PIN30?:
I tried to find information about it, and want to confirm that it is OK to connect the external Lipo battery to pins 1 and 30 on the "BUS expansion port"? And that the battery will be charged when connected to the external USB power?
If you look at the schematic you will see that pin30 on the bus and VBAT (on the lipo connector) are the same. So yes, you can replace the internal battery with an external one with the same voltage!
@skyflyer said in External 1S LIPO on M5Core2 BUS PIN1 and PIN30?:
And I don't need to remove the internal 500mAh battery, since they would be connected in parallel anyhow?
Do not simply put rechargeable batteries in parallel. Disconnect the internal one.
- You can have batteries in parallel but.. at a minimum you need some diodes to prevent them back-charging each other, have a look online where there is a lot of info about this.
