| Pin | Signal | Description |
| 1,7,8,18,19 | N/C | |
| 2 | VS? | |
| 3,17 | GND | |
| 4 | Vbatt | |
| 5 | CF | |
| 6 | Hot Sync | |
| 9 | DSR | |
| 10 | DTR | |
| 11 | CTS | |
| 12 | RTS | |
| 13 | CD | |
| 14 | RI | |
| 15 | TxD | |
| 16 | RxD |
Pins 4 and 5 are shorted inside the chargers. Charging voltage under 5 volts.
| Pin | Signal | Description |
| 1,7,8,18,19 | N/C | |
| 2 | VS? | |
| 3,17 | GND | |
| 4 | Vbatt | |
| 5 | CF | |
| 6 | Hot Sync | |
| 9 | DSR | |
| 10 | DTR | |
| 11 | CTS | |
| 12 | RTS | |
| 13 | CD | |
| 14 | RI | |
| 15 | TxD | |
| 16 | RxD |
Pins 4 and 5 are shorted inside the chargers. Charging voltage under 5 volts.