Battery upgrade
| 2x | Stock batter | Upgrade battery |
| Model | EREMIT 606090 | HXJNLDC 7565121 |
| Chemistry | Li-on | |
| Capacity | 14.8 Wh (4 Ah) | 30.34 Wh (8.2 Ah) |
| Nominal voltage | 3.7 V | 3.7 V |
| Charging limit voltage | 4.2 V |
| 2x | Stock batter | Upgrade battery |
| Model | EREMIT 606090 | HXJNLDC 7565121 |
| Chemistry | Li-on | |
| Capacity | 14.8 Wh (4 Ah) | 30.34 Wh (8.2 Ah) |
| Nominal voltage | 3.7 V | 3.7 V |
| Charging limit voltage | 4.2 V |