A power-off module for QIDI X-Series 3D printers, consisting of a small circuit board with a blue connector and several green connectors on the other side, attached to a ribbon cable. QIDI Power Off Module for X-Series 3D Printers

QIDI Power-off Module for QIDI X-Series 3D Printers | Qidi Tech Qidi 3D Printer

$44.99

Voltage: 115V

115V
115V
230V

QIDI Power Off Module for X-Series 3D Printers — Power Loss Recovery The QIDI Power Off Module is a $44.99 hardware add-on for QIDI X-Series 3D printers (X-Max, X-Max II, X-Plus,...

Qidi Tech 3D Printers Filaments Accessories

Description

QIDI Power Off Module for X-Series 3D Printers — Power Loss Recovery

The QIDI Power Off Module is a $44.99 hardware add-on for QIDI X-Series 3D printers (X-Max, X-Max II, X-Plus, X-Plus 3, X-Smart 3) that automatically detects a power outage, saves the current print position to the printer's storage, and allows you to resume the print exactly where it stopped when power is restored — preventing total loss of long prints that can take 10+ hours and cost $20-50 in wasted filament.

A sudden power outage during a long 3D print is one of the most frustrating experiences in 3D printing. A 12-hour print that is 90% complete can be completely ruined in a second, wasting hours of time and dollars of filament. The QIDI Power Off Module solves this problem by continuously monitoring the printer's power supply. When it detects a power loss, it instantly triggers the printer to save the current print coordinates to the SD card or internal storage. When power is restored, the printer prompts you to resume the print from the exact layer where it stopped.

Price: $44.99 | Rating: 4.6/5 (38 reviews) | Free US Shipping (15-25 business days)

Technical Specifications

Parameter Specification
Product Name QIDI Power Off Module for X-Series 3D Printers
Model QIDI-POM-X01
Function Power loss detection + print position auto-save + resume
Compatible Printers QIDI X-Max, X-Max II, X-Plus, X-Plus 3, X-Smart 3
Detection Method Voltage monitoring (hardware-based power loss detection)
Response Time < 10ms (power loss detection to save trigger)
Backup Power Supercapacitor (provides ~5-10 seconds of reserve power for save operation)
Save Location SD card / internal flash storage (print position coordinates)
Resume Method Automatic prompt on printer screen after power restore
Installation Plug-and-play (connects to motherboard expansion port, no soldering)
Installation Time 10-15 minutes
Tools Required Phillips #1 screwdriver (for panel removal)
Operating Voltage 24V DC (powered by printer motherboard)
Power Consumption < 0.5W (standby), < 2W (during save operation)
Dimensions 60 x 40 x 15mm (PCB module)
Weight ~25g
Operating Temperature 0°C to 60°C
Storage Temperature -20°C to 70°C
Enclosure Heat-shrink tubing (PCB protected)
Cable Length ~200mm (pre-crimped connector)
Connector QIDI motherboard expansion port (pre-crimped)
Firmware Requirement QIDI firmware v3.0+ (pre-installed on X-Series)
Warranty 90 days
Price $44.99 USD

What's in the Box

Item Quantity Description
QIDI Power Off Module PCB 1 Pre-assembled module with supercapacitor and voltage detection circuit
Connection Cable 1 200mm cable with pre-crimped QIDI motherboard connector
Mounting Hardware 1 set Zip ties and adhesive pad for securing module
Installation Guide 1 Printed quick-start guide with diagrams

How It Works

Step 1: Continuous Power Monitoring

The module is connected to the printer's 24V power line and continuously monitors the voltage. During normal operation, the module is in standby mode, drawing less than 0.5W. The onboard supercapacitor is kept fully charged.

Step 2: Power Loss Detection

When the mains power is cut (power outage, accidental unplug, circuit breaker trip), the module detects the voltage drop within 10 milliseconds. This is faster than the printer's power supply can drain, giving the module a critical window to act.

Step 3: Reserve Power Activation

Upon detecting power loss, the module's supercapacitor discharges to provide 5-10 seconds of reserve power to the printer's motherboard. This is enough time for the motherboard to complete the save operation.

Step 4: Print Position Save

The module sends a signal to the motherboard, triggering the firmware to save the current print position (X, Y, Z coordinates, current layer, and print progress) to the SD card or internal flash storage. The save operation takes approximately 1-2 seconds.

Step 5: Power Restore and Resume

When power is restored, the printer boots normally. The firmware detects the saved print position file and displays a prompt on the screen: "Power loss detected. Resume print?" Selecting "Yes" homes the axes and resumes printing from the exact layer where it stopped. Selecting "No" cancels the saved print.

Key Features

Hardware-Based Detection (No Firmware Lag)

Unlike software-only power loss recovery solutions that rely on the firmware to periodically save position (which can lose up to several layers of progress), the QIDI Power Off Module uses hardware-based voltage detection. It triggers the save within 10ms of power loss, ensuring the print position is saved at the exact moment of outage — typically losing less than one layer of progress.

Supercapacitor Reserve Power

The module uses a supercapacitor (not a battery) to provide reserve power. Supercapacitors have a 10+ year lifespan, can be charged and discharged millions of times, and do not suffer from the memory effect or swelling that plagues lithium batteries. The supercapacitor provides 5-10 seconds of power — more than enough for the save operation.

Plug-and-Play Installation

The module connects to the QIDI motherboard's expansion port with a pre-crimped connector. No soldering, no wire cutting, no firmware flashing. Simply remove the printer's bottom panel, plug in the module, secure it with the included zip ties or adhesive pad, and replace the panel. Total installation time: 10-15 minutes.

Compatible with All X-Series Printers

The module works with all QIDI X-Series printers: X-Max, X-Max II, X-Plus, X-Plus 3, and X-Smart 3. QIDI's X-Series firmware (v3.0+) includes native support for the power off module, so no firmware update is required for most printers.

Zero Print Quality Impact

The module draws less than 0.5W in standby mode and does not interfere with the printer's normal operation. It does not affect print speed, accuracy, or temperature control. The module is completely transparent during normal printing — you will not know it is there until you need it.

Pros & Cons

Pros

  1. Prevents total print loss: Saves print position on power outage, allowing resume from exact layer — saves hours of time and dollars of filament on long prints.
  2. Hardware-based detection: 10ms response time — faster than software-only solutions, loses less than one layer of progress.
  3. Supercapacitor reserve: 5-10 seconds of backup power, 10+ year lifespan, no battery swelling or replacement needed.
  4. Plug-and-play installation: Pre-crimped connector, no soldering, 10-15 minute install with only a Phillips #1 screwdriver.
  5. Wide X-Series compatibility: Works with X-Max, X-Max II, X-Plus, X-Plus 3, X-Smart 3 — five printer models covered.
  6. Zero print quality impact: <0.5W standby draw, no effect on speed, accuracy, or temperature.
  7. Automatic resume prompt: Printer displays "Resume print?" on boot — no manual G-code editing required.
  8. Affordable at $44.99: Cheaper than the cost of one failed 10+ hour print in filament alone.
  9. Compact size: 60x40x15mm PCB fits easily inside the printer's electronics compartment.
  10. No firmware update needed: Native support in QIDI X-Series firmware v3.0+.

Cons

  1. X-Series only: Not compatible with QIDI i-Fast, Q1 Pro, Q2, or non-QIDI printers. The connector and firmware support are X-Series specific.
  2. Requires panel removal: You must remove the printer's bottom or side panel to access the motherboard — not as simple as a USB plug-in device.
  3. 90-day warranty: Short for a device with a 10+ year supercapacitor lifespan. A 1-year warranty would be more appropriate.
  4. Does not protect against motherboard failure: If the printer's motherboard fails (not just power loss), the module cannot save the print. It only handles power outages.
  5. Resume may have visible seam: The layer where printing resumes may show a slight seam or z-band due to the time gap (filament cooling, nozzle oozing during the outage).
  6. SD card required for save: The print position is saved to the SD card or internal storage. If you print from USB without SD, ensure internal storage is available.
  7. Not a UPS: The module only provides enough power (5-10 seconds) to save the print position. It does not allow the printer to continue printing during the outage.
  8. Shipping time: Free standard shipping takes 15-25 business days. If you need it urgently, express shipping costs extra.
  9. Single unit only: If you have multiple QIDI printers, you need one module per printer.
  10. Limited documentation: The included guide is brief. Online resources and video tutorials are limited compared to more popular accessories.

Installation Overview

Installing the QIDI Power Off Module takes 10-15 minutes and requires only a Phillips #1 screwdriver. The process:

  1. Power off the printer and unplug the power cable. Wait 2 minutes for capacitors to discharge.
  2. Remove the bottom panel (or side panel, depending on model) to access the motherboard. The panel is held by 4-6 M3 screws.
  3. Locate the expansion port on the motherboard — it is labeled "POWER_OFF" or "EXPANSION" and is a 4-pin or 6-pin connector.
  4. Plug the module's pre-crimped connector into the expansion port. The connector is keyed, so it can only be inserted one way.
  5. Secure the module inside the electronics compartment using the included zip ties or adhesive pad. Ensure it does not touch any moving parts or the power supply heat sink.
  6. Route the cable away from the power supply and fan cables to avoid interference.
  7. Replace the bottom panel and tighten the screws.
  8. Power on the printer. Navigate to Settings → Power Loss Recovery and ensure the option is enabled (it should be enabled by default).
  9. Test: Start a print, then unplug the printer mid-print. Plug it back in — the printer should display "Resume print?" prompt.
Warning: Always power off and unplug the printer before opening the electronics compartment. The power supply contains high-voltage capacitors that can retain a dangerous charge even after the printer is turned off. Wait 2 minutes after unplugging before touching any internal components.

Frequently Asked Questions

What is the QIDI Power Off Module and how does it work?
The QIDI Power Off Module is a $44.99 hardware add-on for QIDI X-Series 3D printers (X-Max, X-Max II, X-Plus, X-Plus 3, X-Smart 3) that automatically saves your print position when the power goes out, allowing you to resume printing from the exact layer where it stopped. It works by continuously monitoring the printer's 24V power line. When it detects a voltage drop (power outage) within 10ms, it uses an onboard supercapacitor to provide 5-10 seconds of reserve power, triggering the motherboard to save the current X/Y/Z coordinates and layer number to the SD card. When power is restored, the printer displays a "Resume print?" prompt. The module uses hardware-based detection (faster than software-only solutions) and a supercapacitor (10+ year lifespan, no battery replacement).
Which QIDI printers is the Power Off Module compatible with?
The QIDI Power Off Module is compatible with all QIDI X-Series printers: X-Max (original), X-Max II, X-Plus (original), X-Plus 3, and X-Smart 3. These printers share the same motherboard expansion port and firmware (v3.0+) that natively supports the power off module. The module is NOT compatible with QIDI i-Fast, Q1 Pro, Q2, or any non-QIDI printers (Creality, Bambu, Prusa, etc.) — they use different motherboard connectors and firmware. Before ordering, verify your printer model by checking the name on the back panel or in Settings → About. If you have an X-Series printer with firmware older than v3.0, update the firmware first (free from QIDI's website).
How much progress do I lose when power goes out with this module?
With the QIDI Power Off Module, you typically lose less than one layer of print progress. The module uses hardware-based voltage detection that triggers the save within 10 milliseconds of power loss — much faster than software-only solutions that save periodically (every 5-30 seconds, potentially losing several layers). The supercapacitor provides 5-10 seconds of reserve power, which is more than enough for the motherboard to write the print coordinates to storage (the save takes 1-2 seconds). In real-world testing, the resumed print continues from the exact layer where the outage occurred, with at most a 0.2mm layer height of lost progress. For comparison, without any power loss recovery, you lose 100% of the print.
Is the QIDI Power Off Module difficult to install?
No — installation takes 10-15 minutes with only a Phillips #1 screwdriver. The module is plug-and-play: (1) Power off and unplug, wait 2 minutes. (2) Remove the bottom panel (4-6 M3 screws) to access the motherboard. (3) Plug the pre-crimped connector into the motherboard's expansion port (keyed, one-way insertion). (4) Secure the module with zip ties or adhesive pad. (5) Replace the panel. (6) Power on and verify Power Loss Recovery is enabled in Settings. No soldering, no wire cutting, no firmware flashing. The only slightly tricky part is routing the cable neatly inside the electronics compartment. Beginners can do it — the included guide has clear diagrams.
Does the module work like a UPS (uninterruptible power supply)?
No. The QIDI Power Off Module is NOT a UPS. It only provides 5-10 seconds of reserve power from a supercapacitor — just enough time for the motherboard to save the print position to storage. It does not allow the printer to continue printing during a power outage. A UPS (uninterruptible power supply) provides minutes to hours of backup power and could theoretically let you finish a print during a short outage, but a UPS for a 3D printer costs $100-300 and is much larger. The QIDI module at $44.99 is designed specifically for the "save and resume" approach, which is the most cost-effective way to handle power outages for long prints.
Will the resumed print have a visible seam or defect?
There may be a slight visible seam at the layer where printing resumes. This is caused by: (1) the filament cooling slightly during the outage, (2) the nozzle oozing a small amount of filament while the printer is off, and (3) the time it takes for the hotend to reheat to printing temperature. The seam is usually a faint horizontal line at the resume layer — it is more visible on glossy filaments (PETG, silk PLA) and less visible on matte filaments. To minimize the seam: (1) Use the printer's "Z-hop" and "wipe" settings if available. (2) Manually remove any oozed filament from the nozzle before resuming. (3) For critical prints, consider sanding and polishing the seam layer. Most users find the seam is acceptable for functional parts and prototypes.
How long does the supercapacitor last and does it need replacement?
The supercapacitor in the QIDI Power Off Module has a rated lifespan of 10+ years (1 million+ charge/discharge cycles). Unlike lithium batteries, supercapacitors do not suffer from memory effect, do not swell, and do not contain hazardous materials. They can be charged and discharged millions of times without significant capacity degradation. In normal use (a few power outages per year), the supercapacitor should last the entire lifetime of the printer. It does not need periodic replacement. If the module ever fails to save the print position (test by unplugging mid-print), the supercapacitor may have degraded — contact QIDI support for a replacement module under warranty.
What should I do if the printer does not prompt to resume after power restore?
If the printer does not display "Resume print?" after a power outage, check these: (1) Verify the module connector is fully seated in the motherboard expansion port — unplug and re-plug it. (2) Ensure Power Loss Recovery is enabled in Settings → Power Loss Recovery (it should be on by default). (3) Check that the SD card is inserted and has free space (the save file needs ~10KB). (4) Verify the firmware is v3.0 or later — update if needed. (5) Test the module by starting a print and unplugging the printer — if it still does not prompt, the module may be defective. (6) If the module works but the save file is corrupted, reformat the SD card (FAT32, 4096-byte allocation units). Contact QIDI support if the issue persists.
Can I use the Power Off Module when printing from USB or internal storage?
Yes. The QIDI Power Off Module saves the print position to whichever storage medium the print is being read from — SD card, USB drive, or internal flash storage. The save file is small (~10KB) and is written alongside the print file. Ensure your storage medium has at least 100KB of free space. If printing from a USB drive, use a high-quality USB drive with fast write speeds — the save operation must complete within the 5-10 second supercapacitor window. Slow USB drives may not complete the save in time. SD cards and internal storage are the most reliable options for power loss recovery.
Is the QIDI Power Off Module worth $44.99?
Yes, for anyone who prints long objects (4+ hours) on a QIDI X-Series printer. A single failed 10-hour print wastes $10-30 of filament (depending on material) and 10 hours of printer time — the $44.99 module pays for itself after preventing just one or two failed prints. The hardware-based 10ms detection, supercapacitor reserve, and plug-and-play installation make it more reliable than software-only solutions. It is especially valuable for: (1) users in areas with unreliable power, (2) users who print large/long objects, (3) users who use expensive filaments (carbon fiber, nylon, PC). The 90-day warranty is a downside, and the X-Series-only compatibility limits its audience. But for X-Series owners who print long objects, it is a worthwhile investment.

Related Articles


Tags:
qidi power off module
qidi power off module, qidi power loss recovery module, qidi x-max power off module, qidi x-plus power loss module, qidi x-max ii power outage module, qidi x-smart 3 power off module, qidi power off module price, buy qidi power off module, qidi x-series power loss recovery, qidi tech power off module
3d printer power loss recovery guide, how to save 3d print after power outage, 3d printer power failure recovery, how does power loss recovery work 3d printer, 3d printer resume after power outage, 3d printer power outage protection, 3d printer power loss troubleshooting, 3d printer print recovery after power cut, 3d printer supercapacitor power loss, 3d printer power off module installation
3d printer power loss recovery comparison, qidi power off module vs ups, qidi vs bambu power loss recovery, hardware vs software power loss recovery, best 3d printer power outage protection 2026, best power loss recovery module 3d printer, qidi power off module vs creality, power loss recovery module vs ups 3d printer, 3d printer power loss recovery ranked, qidi power off module review

qidi power off module, qidi power loss recovery, qidi x-series power off module, 3d printer power loss recovery, qidi x-max power outage module, qidi x-plus resume print, 3d printer power failure protection, qidi power off module 44.99, qidi tech power loss module, 3d printer resume after power outage, qidi x-series accessories, power failure recovery module 3d printer