When it is in use, the button indicator will indicate the Flexus AIO’s current battery level:
| Battery level: <3.5V (0-30%) | On Red |
| Battery level: 3.5V-3.8V (30-60%) | On Blue |
| Battery level: 3.8V-4.2V (60-100%) | On Green |
While charging, the levels indicator will indicate the Flexus AIO’s current battery level:
| Battery level: <3.5V (0-30%) | 1 levels indicator will be on white |
| Battery level: 3.5V-3.8V (30-60%) | 2 levels indicators will be on white |
| Battery level: 3.8V-4.2V (60-100%) | 3 levels indicators will be on white |
