Is your Taylor scale displaying “LO” or “BAT”? Does it fail to turn on or give inconsistent weight readings? These are clear signs it’s time for a battery replacement. The good news: changing the battery in a Taylor digital scale is quick, easy, and takes less than five minutes with basic tools. Most models use a standard CR2032 3-volt lithium coin battery, and the process requires only a small screwdriver or even just your fingernail.
In this guide, you’ll learn exactly how to replace the battery in any Taylor scale model, including the 5721F, 3831S, 7538, and generic digital versions. We’ll walk through step-by-step instructions, highlight common mistakes to avoid, troubleshoot post-replacement issues, and share pro tips from real users.
Identify Low Battery Signs in Your Taylor Scale
Recognizing the warning signs early helps you replace the battery before your scale stops working completely.
Watch for “LO” or “BAT” Display
When your Taylor scale shows “LO” or “BAT” on the screen after stepping on, it’s signaling low power. This is the most common indicator across bathroom and kitchen models. Some versions briefly flash the message before shutting off entirely.
Scale Won’t Power On
If the display remains blank when you step on the scale, a dead battery is likely the culprit. This is especially true if the scale was working intermittently or displaying dimly before failing completely.
Inconsistent or Erratic Readings
A dying battery causes fluctuating weight readings. For example, the same person might see 150 lbs one second and 168 lbs the next, even without moving. This instability means the scale’s sensors aren’t getting consistent power.
Error Codes After Replacement
After battery replacement, some users report seeing OUE2 (overload error) or ron (malfunction code). These often resolve with a reset but may persist if the battery isn’t seated properly or the scale needs recalibration.
Pro Tip: Always test the scale with a known weight after battery change to confirm accuracy.
Gather the Right Tools and Battery for Your Taylor Scale
Having the correct tools and battery ensures a smooth replacement process without damaging your scale.
Use CR2032 3V Lithium Battery
The CR2032 is the standard battery for nearly all Taylor digital scales. It’s a 3-volt coin cell, 20mm wide and 3.2mm thick. Check inside the compartment for markings like “2032” or “CR2032” to confirm before purchasing a replacement.
Warning: Never force in a different-sized battery. Using the wrong type can damage internal contacts and void your warranty.
Tools Required by Model Type
The tools you need depend on your Taylor scale model.
• Phillips #00 screwdriver: Needed for models with screw-secured covers (e.g., Taylor 5721F, 3831S)
• Plastic pry tool or fingernail: For clip-on or slide-off battery doors
• Scissors: Only if removing plastic tab from new battery packaging
Safety Note: Avoid metal tools when handling the battery to prevent short circuits that could damage the scale’s electronics.
Open the Battery Compartment on Your Taylor Scale
The battery compartment is located on the underside of the scale. Here’s how to access it safely.
Remove Screws Safely
Turn the scale upside down and locate the battery cover. If secured with a screw, use a precision Phillips #00 screwdriver to gently unscrew and place the screw on a magnet or small dish to avoid losing it. On models like the Taylor 5721F, remove the screw before attempting to open the latch.
Common Mistake: Over-tightening during reassembly strips plastic threads. Tighten just until snug.
Pry Open Clip or Slide Covers
Some models use snap-fit or sliding battery doors. Look for a small notch or indentation on the edge. Insert your fingernail or plastic tool into the gap and gently lift or slide the cover open. Models like generic Taylor bathroom scales often have no screws and feature a press-to-open design.
Visual Cue: A raised lip or arrow symbol usually indicates the opening direction.
Remove and Replace the Old Battery
Proper battery orientation is critical for your scale to work correctly after replacement.
Check Battery Orientation First
Before removing the old battery, note which side faces up. In 99% of Taylor scales, the positive (+) side faces upward. The metal prongs in the compartment press against this side to complete the circuit.
Lift Out the Old Battery
Gently push one edge of the battery up using a fingertip or non-metal tool. Slide it out from under the retaining clips. Inspect for corrosion or residue and wipe clean with a dry cloth if needed.
Never use liquids to clean the compartment. Moisture can damage electronics permanently.
Insert New Battery Correctly
Prepare the new CR2032 by removing any plastic activation tab. Confirm the + sign is facing up. Align one edge under the metal prong, slide one side under the retaining clip, then press down the opposite edge until it clicks into place. Ensure the battery sits flat and doesn’t wobble.
User Tip: If the prongs are tight, use a fingernail to slightly lift one tab while inserting the battery at an angle.
Reassemble and Test Your Taylor Scale
Proper reassembly ensures your scale stays protected and functions accurately.
Secure the Battery Cover
For snap-on covers, align one edge and press until it clicks shut. No tools needed, just firm pressure. For screw-secured models, reinsert the screw and tighten gently to avoid stripping the threads.
Optional but Recommended: Always replace the screw. It protects against dust, moisture, and accidental opening.
Power On and Calibrate
Place the scale on a hard, level surface. Step on briefly and most Taylor scales auto-zero. Wait for display to show “0.0”. Step off and back on to test reading.
Pro Tip: Stand still during measurement. Movement causes inaccurate results.
Fix Common Post-Replacement Issues
Even with a new battery, you may encounter some issues. Here’s how to resolve them.
Scale Still Shows “LO”
Even with a new battery, “LO” may appear if the battery is inserted upside down, contacts are dirty or oxidized, or the battery is defective. Flip the battery, clean contacts with a dry cloth, or try a fresh CR2032.
Display Reads OUE2
This overload error usually means you stepped on too soon after battery insertion or the scale didn’t complete startup sequence. Step off the scale, wait 5 seconds, and try again. If it persists, recalibrate per your model’s manual.
Error Code “ron” Appears
“ron” suggests a software glitch or internal fault. Replace battery again to rule out poor contact, then reset by stepping on/off three times. If unresolved, contact Taylor customer support.
Note: Persistent “ron” may indicate hardware failure beyond battery issues.
Inaccurate or Jumping Readings
Most often caused by improper calibration after battery change, uneven floor surface, or dirty sensor points. Let scale auto-zero to “0.0” before each use, clean feet with a dry cloth weekly, and avoid carpeted or soft flooring.
Model-Specific Battery Replacement Steps
While the general process stays the same, each model has slight variations.
Taylor 5721F Bathroom Scale
The Taylor 5721F uses a CR2032 battery and requires a Phillips #00 screwdriver. Remove the single screw from the back, slide the cover open using the side notch, replace the battery with the + side up, then reattach the cover and screw.
User Feedback: “Took me two tries to get the battery under the prong. Slide one edge in first, then press the other down.”
Taylor 3831S Kitchen Scale
The Taylor 3831S uses a CR2032 battery with a #00 screwdriver. Unscrew the battery housing, push the tab inward to release the cover, insert the new battery with the indented side facing the scale (+ up), reattach and tighten the screw, then turn on and test.
Key Detail: The flat (shiny) side should face up. This is the positive terminal.
Taylor Model 7538 Digital Scale
The 7538 uses a CR2032 battery with screw or clip access depending on the variant. Flip the scale over, open the compartment, remove the old battery and insert the new one (+ up), close securely, return to upright position, and test.
Note: Some 7538 units have no screw. The cover snaps open with a fingernail.
Generic Taylor Bathroom Scales
Generic Taylor bathroom scales commonly feature “LO” or “BAT” low-battery alerts and require no tools for cover removal. Turn over and locate the battery door, use a fingernail to pop open the cover, replace the CR2032 with the + side up, then snap the cover back.
Bonus Tip: Store spare screws inside the battery compartment if they become loose.
Extend Battery Life and Scale Performance
Proper maintenance keeps your Taylor scale working reliably for years.
Expected Battery Lifespan
Most Taylor scales run 1-2 years on a single CR2032, depending on usage frequency. Frequent weigh-ins drain power faster.
Fact: Taylor scales use low-energy LCD displays, contributing to long battery life compared to other electronic devices.
Store Spare Batteries Properly
Keep spare batteries in a cool, dry place away from metal objects like keys or coins that could cause shorting. Use original packaging or plastic battery cases for storage.
Clean Contacts Regularly
Every 6 months, open the battery compartment and wipe metal prongs and housing with a dry cloth. Never use alcohol or water.
Prevent Premature Drain
Avoid leaving the scale on continuously. Don’t store in humid areas like bathrooms with poor ventilation. Remove the battery if storing the scale long-term.
Final Checklist for Taylor Scale Battery Replacement
Before finishing, verify you’ve completed each step.
✅ Turned scale upside down
✅ Identified low battery sign (“LO”, “BAT”, or blank screen)
✅ Used correct CR2032 battery
✅ Removed screw (if applicable) with #00 screwdriver
✅ Opened battery cover safely
✅ Removed old battery with + side noted
✅ Inserted new battery with positive side up
✅ Ensured battery fully seated under prongs
✅ Reattached cover and replaced screw
✅ Powered on and saw “0.0” display
✅ Tested with known weight for accuracy
If all are checked, your Taylor scale should work like new.
Frequently Asked Questions About Changing Taylor Scale Batteries
How do I know if my Taylor scale needs a new battery?
Your Taylor scale needs a new battery when it displays “LO” or “BAT”, fails to power on, or shows inconsistent weight readings. These are the primary low battery indicators across all Taylor scale models.
What battery does a Taylor scale use?
Most Taylor digital scales use a CR2032 3-volt lithium coin cell battery. This is the standard battery for bathroom and kitchen models including the 5721F, 3831S, and 7538.
Why does my Taylor scale show “LO” after battery replacement?
“LO” may still appear if the battery is inserted upside down, contacts are dirty or oxidized, or the battery is defective. Check the orientation (positive side up), clean contacts with a dry cloth, or try a fresh battery.
Can I use a different battery type in my Taylor scale?
No. Only use the specified CR2032 battery. Using a different size or type can damage the internal contacts and void your warranty. Always check the compartment labeling for the correct battery type.
How often should I replace the battery in my Taylor scale?
Replace the battery every 1-2 years, depending on usage frequency. If you use your scale multiple times daily, the battery may drain faster. Proactive replacement prevents unexpected failures.
What does the error code “ron” mean on my Taylor scale?
“ron” indicates a software glitch or internal malfunction. Try resetting by stepping on and off three times. If it persists, contact Taylor customer support as it may indicate hardware failure beyond battery issues.
Key Takeaways for Changing Your Taylor Scale Battery
Changing the battery in a Taylor scale is a simple fix that restores full functionality and avoids unnecessary replacement costs. With just a CR2032 battery and a small screwdriver or fingernail, you can complete the task in minutes. The key steps removing the old battery, inserting the new one with positive side up, and securing the cover remain consistent across models like the 5721F, 3831S, and 7538.
By recognizing early signs like “LO” or erratic readings, you can maintain accuracy and extend your scale’s lifespan to five years or more. If you encounter issues like OUE2 or ron errors after replacement, a quick reset usually resolves them. Keep spare batteries on hand and perform routine checks every six months to ensure consistent performance.
Now that your scale is back in action, remember to replace the battery proactively every 1-2 years. A well-maintained Taylor scale delivers reliable results for years with no guesswork needed.
