Redmi 9A Og Charging Board
SUPPORTED MODEL:
The Redmi 9A Original Grade (OG) Charging Board (also known as the Charging PCB or Sub-Board) is a high-performance replacement component designed to restore your device's charging and data transfer capabilities. Unlike standard aftermarket boards, the "OG" version includes the full array of ICs (Integrated Circuits) and components necessary for fast charging and consistent network signal strength.
Below is the detailed product breakdown in a scannable format.
| Feature | Detailed Specification |
| Product Name | Redmi 9A OG Charging Board (Sub-PCB) |
| Compatible Model | Xiaomi Redmi 9A (M2006C3LG, M2006C3LI, M2006C3LC) |
| Port Type | Micro-USB 2.0 |
| Component Grade | Original Grade (OG) - Includes all ICs & Protection |
| On-Board Components | Charging Port, Microphone, Network Antenna Contact, ICs |
| Functionality | Charging, Data Sync, Voice Transmission (Mic), Signal Reception |
| Material | High-Density Fiber PCB with Gold-Plated Connectors |
| Fast Charging | Supported (Maintains original charging speeds) |
| Microphone Type | Digital MEMS Microphone (High Sensitivity) |
When repairing a Redmi 9A, the difference between a "Copy" board and an "OG" board is significant. This OG board is designed to provide a factory-level experience.
| Feature | OG Board (This Product) | Standard Copy Board |
| Network Signal | High; includes signal amplifier components. | Low; often causes "No Service" issues. |
| Charging Speed | Full speed; supports original wattage. | Slow; may take 4–6 hours for a full charge. |
| Audio Quality | Crisp, noise-canceling MEMS microphone. | Muffled or low-volume audio during calls. |
| IC Protection | Full over-voltage & short-circuit protection. | Usually missing safety components. |
| Data Sync | Stable high-speed data transfer. | Frequently fails or only supports charging. |
It is time to replace this internal component if your Redmi 9A exhibits any of the following behaviors:
Loose Connection: You have to hold the cable at a specific angle to start charging.
Slow Charging: The phone takes significantly longer to charge than it used to.
Mic Failure: People cannot hear you during calls, but the speaker works fine.
No Charging: The device does not respond to a charger at all.
Signal Loss: Your mobile network signal dropped significantly after a previous repair or water damage


