Hi there,
So here is an interesting Demo,
Guy needs High current battery charger…
Check this OUT!
Selectable with the (b) button , 200/500/800 ma.
Still working out the screen formats, but it works like a champ.
here is the screens , video & code forth coming 
The Most Amazing XIAO to DATE!
HTH
GL 
PJ 
Hi there,
I wrapped up a standalone battery charger demo for the Seeed XIAO nRF54LM20A using the onboard Nordic nPM1300 PMIC and the 1.54" 200×200 e-paper display.
This project is intended as both a PMIC demonstration and a reference for anyone wanting to build battery-powered devices with the XIAO platform.
The UI is designed around a single USER button, making it easy to operate without any external controls.
The charging dashboard provides live information including:
The countdown and live displays use partial e-paper refreshes to minimize flashing while keeping updates responsive.
This isn’t intended to replace a commercial battery charger. It’s a demonstration of how much capability is already available on the XIAO board with very little additional hardware. It also serves as a starting point for portable instruments, IoT devices, asset trackers, environmental sensors, and other battery-powered projects that need intelligent charging and battery management.
I hope it gives others a useful example of integrating the nPM1300 with a clean, low-power e-paper user interface. Feedback and suggestions are always welcome!
Here is the serial output …
=== CHARGE STATUS ===
Set: 200 mA
VBAT: 4227 mV
IBAT: 42 mA
PMIC temp: 33245 mC
Session SOC: 94%
Added: 0.21 mAh
_Update_Full : 1294663
=== CHARGE STATUS ===
Set: 200 mA
VBAT: 4227 mV
IBAT: 42 mA
PMIC temp: 33245 mC
Session SOC: 94%
Added: 0.41 mAh
_Update_Full : 1294663
=== CHARGE STATUS ===
Set: 200 mA
VBAT: 4227 mV
IBAT: 41 mA
PMIC temp: 33245 mC
Session SOC: 94%
Added: 0.60 mAh
_Update_Full : 1294663
=== CHARGE STATUS ===
Set: 200 mA
VBAT: 4227 mV
IBAT: 37 mA
PMIC temp: 34830 mC
Session SOC: 94%
Added: 6.23 mAh
_Update_Full : 1294661
_Update_Full : 1294663
_Update_Full : 1294662
_Update_Full : 1294663
=== CHARGE STATUS ===
Set: 200 mA
VBAT: 4227 mV
IBAT: 37 mA
PMIC temp: 34037 mC
Session SOC: 94%
Added: 6.70 mAh
HTH
GL PJ
Here is the Code…
Firehorse_Fast_charge_demo.zip (11.6 KB)
you said press B and B was on the screen… I was thinking it had tactile feedback…
https://www.nordicsemi.com/Products/Power-Management-ics
WOW you are saying this device has onboard power management?