The average charging time varies depending on the model. Some charge cycles take longer than normal because battery cells have to be balanced.
| RC models | 70 - 90 min |
| RS models | 90 - 110 min |
| RX models | 16 - 20 hr |
| RT models | 180 min |
| RK1000 & RK2000 | 60 - 120 min |
| RK3000 | 60 - 80 min |
| RK4000 | 90 - 110 min |