4,400 mAh Battery going on 53 days!

A project log for Wireless BLE Kinesis Advantage (Custom Controller)

Replaces the stock controller with an nRF52 BLE SOC and MCP23S17 io expander. BLE Kinesis with great (few months) battery life.

Mike WMike W 02/16/2019 at 08:520 Comments

This is currently the longest time I've gone without a charge and so far real life battery consumption is line with expectations.

Although the battery measurements need to be re-calibrated. Currently it shows the battery losing the first 50% in a week or so but hangs on at over 50% for over a month. But even after calibration, the measurement accuracy would be dependent on too many factors anyway (battery capacity, temperature, make etc.). So the only take-away is that the battery consumption is accurately 1-2mA during usage.

The keyboard has been under moderate usage (8-12 hours) per day and is currently still going.