🪒🔌 Philips Norelco A00390 Power Adapter
 
(4.3V DC • 70mA • Proprietary wide 2‑prong plug • Shaver & Grooming Tool Compatible)

This adapter delivers regulated 4.3V DC power to a wide range of Philips Norelco grooming devices. It is one of Philips’ most widely distributed low‑voltage adapters, supporting both OneBlade and Multigroom product families.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 4.3V DC @ 70mA
Connector: Proprietary wide 2‑prong plug
Cable: Integrated DC cable with molded strain relief
Common part numbers: A00390
 
🖥️ Compatible Devices
🟦 OneBlade Series
QP2510 / QP2511 / QP2515
QP2520 / QP2521 / QP2522
QP2620 / QP2721 / QP2821
🟦 Multigroom Series
MG3740 / MG3720 / MG3910
MG5700 / MG5720 / MG5730 / MG5740
🟦 Beard & Hair Trimmers
QG3330 / QG3331 / QG3340
QT4000 Series
BT3206 and related BT32xx models
🟦 Other Grooming Tools
Select RQ3xx shavers (RQ310, RQ312, RQ320, RQ330, RQ350)
Certain S3xx and S5xx compact shavers
 
✅ Common Uses
🔌 Charging Philips OneBlade shavers (non‑Pro models)
🧩 Powering Multigroom kits and beard trimmers
🧪 Supporting restoration of compact Philips shavers
🧵 Essential entry in the Philips grooming power ecosystem
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 4.3V DC, ~70mA
🔌 Connector: Proprietary wide 2‑prong plug
🔁 Not interchangeable with 15V adapters (HQ8505, A00590, etc.)
 
⚠️ Things to Watch Out For
📉 Must be 4.3V — higher‑voltage adapters (15V) will damage the device
🔌 Connector is proprietary wide 2‑prong plug — not USB or MagSafe‑style
🧯 Always confirm “DC IN 4.3V” on the shaver body before use
📏 Some newer Philips models use USB‑C — A00390 is not compatible
 
🛠️ Quick Tips for Beginners
🔌 Confirm connector: Proprietary wide 2‑prong plug, not USB or barrel
🧪 If device won’t charge, inspect barrel contacts for wear or corrosion
🧯 Label clearly to avoid mix‑ups with higher‑voltage Philips adapters