GP 27A 12V High-Voltage Alkaline Battery for Remote Controls and Keyless Entry
| Component | Specification |
| Brand | GP Batteries |
| Chemistry | Alkaline (Manganese Dioxide) |
| Model | 27A / L828 / MN27 |
| Nominal Voltage | 12.0V |
| Capacity | ~20mAh |
| Terminal Type | Button Top |
| Shelf Life | Up to 3 Years |