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Universal Emergency Power Supply for Smart & Semi-Smart Door Locks – Portable Battery Bank Compatible with Fingerprint & Keypad LocksItem NO.: No code2
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Customized Requirements
- Quantity
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Stock ( 9999998 )

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- Product Name: Universal Emergency Power Supply for Smart & Semi-Smart Door Locks – Portable Battery Bank Compatible with Fingerprint & Keypad Locks
- Item NO.: No code2
- Weight: 0.25 kg = 0.5512 lb = 8.8185 oz
- Volume: 30 CBM
- Category: Locksmith tools > Assist consumable tools
- Creation Time: 2026-06-24
Product Description:
Adjustable voltage emergency power supply compatible with full-automatic and semi-automatic fingerprint locks. Suitable for different lock types. Simply carry this product along with your mobile phone or power bank when going out, and you can unlock the door.
This power supply adapter is compatible with 99% of smartphones and all power banks on the market, providing convenient power supply for unlocking. Compatible with both semi-automatic and full-automatic locks. For smartphone use, the phone must support OTG (On-The-Go) function and have it enabled to supply power for unlocking.
Customization supported for input cable (Type-C), output voltage, and wholesale orders.
How to Use:
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Plug in the USB main cable first.
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Long-press the button to set the desired voltage. (If the lock can be opened with a low voltage setting, always choose the lowest possible voltage.)
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Connect the energy storage module and wait for 1–2 minutes.
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Plug into the lock – it will unlock.
Note: The energy storage module may become slightly warm during use – this is normal.
Button vs. Toggle Switch Comparison:
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Touch button: Durable and convenient. Supports precise voltage setting for multiple lock types.
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Mechanical toggle switch: Short lifespan, only supports 2 voltage settings, and has a higher risk of burning the lock.
Output Interface: USB port.
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