Spirit System

When I plug the battery in it shows the capacity as nil even when it’s fully charged, how do I get it to show full capacity and remaining capacity?

I guess Spirit stars at zero then counts up for capacity used but the percentage is based on the total battery capacity you enter, is that correct?

That's correct.

So presumably if I am using a 5200mah battery but set the capacity to 3900mah when it reads 100% used I will still have 25% left in the pack.
So I should be able to set voice alarms = 20%,40%,60%, 80% etc that should work and at 100% leave 25% in the pack?

You can use Alarm for Used Capacity. Then you can just set 75% for alarm. Regardless of used battery.

Is it better to set the detection method for used capacity as after model selection or the spirit RFID sensor.

Please choose option: Model selection
RFID sensor is peripheral connected to the Spirit to automatically detect battery. This will be available for order soon.