7-pin laptop battery connectors are simpler smart battery interfaces carrying power, ground, thermistor, and basic SMBus communication without redundant ground pins used in some Lenovo and ASUS laptops.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | V+ | Battery positive voltage | PWR |
| 2 | ID | Battery identification | I/O |
| 3 | SMB_CLK | SMBus clock | BUS |
| 4 | SMB_DAT | SMBus data | BUS |
| 5 | GND | Ground | GND |
| 6 | THERM | Temperature thermistor | ADC |
| 7 | GND | Thermistor ground | GND |