RE: nPM1304 EK battery profiling up to 500mAh

GonzaCerv — Fri, 28 Nov 2025 08:46:46 GMT

Thank you so much for the information!

RE: nPM1304 EK battery profiling up to 500mAh

Tharaka — Fri, 28 Nov 2025 07:46:41 GMT

Hi

The nPM1304 has a maximum charge current of 100 mA, so charging this 1100 mAh battery would take well over 12 hours. This exceeds the built-in safety timer (tOUTCHARGE = 7 h), causing charging to stop before the battery is full.

Also we do not recommend profiling this battery using the nPM1304-EK. The hardware current-sinking capability of the EK is not designed for high-capacity cells, and the profiling procedure will not be reliable. This is why PowerUP limits the selectable capacity to 500 mAh for the nPM1304-EK.

nPM1300 PMIC which is a 800mA charger could be a better choice for this battery and your application. For a battery of this size, you should use the nPM1300-EK together with the nPM-FG board, which supports higher charge currents and proper profiling of larger capacity batteries.

Regards

Tharaka