Yeedi Vac Battery Replacement - Complete DIY Guide

Your Yeedi Vac charges for hours but dies in 15 minutes. Or won't hold charge at all.

Battery replacement time.

Good news: Yeedi battery replacement takes 15-20 minutes with basic Phillips screwdriver. Compatible batteries cost $22-35 (vs $60+ OEM).

This guide covers Yeedi Vac 2 Pro, Vac Max, Vac Station, and original Vac models. Installation identical across lineup.

Let's get your Yeedi running 90+ minutes again.

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Signs You Need Battery Replacement (Not Just Charging Issue)

Before buying battery, confirm it's actually dead:

Definite Battery Replacement Needed:

• ✅ Dies in under 30 minutes on full charge
• ✅ Battery over 18 months old with daily use
• ✅ Charges overnight (8 hours) but battery indicator shows 60% or less
• ✅ Battery swollen or hot to touch
• ✅ Error message: "Battery error" or "Replace battery"

Might Be Charging Issue (Try This First):

• ⚠️ Won't charge at all → Clean charging contacts
• ⚠️ Dies quickly but under 12 months old → Try battery reset
• ⚠️ Inconsistent charge times → Check dock power supply

Battery Life Expectancy:

• Yeedi Vac 2 Pro/Max: 18-24 months (daily use)
• Yeedi Vac Station: 15-20 months (heavier battery from self-empty)
• Yeedi Vac (original): 15-18 months
• Light use (2-3x/week): 24-30 months

↳ Most Common Sign: Runtime drops from 90 minutes → 60 minutes → 30 minutes over 2-3 months.

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Battery Specifications & Compatibility

Yeedi Vac 2 Pro / Vac Max

• Voltage: 14.4V
• Capacity: 5200mAh (standard) or 6400mAh (extended)
• Chemistry: Li-ion
• Connector: 4-pin white connector
• Dimensions: 130mm x 85mm x 20mm

Yeedi Vac Station

• Voltage: 14.4V
• Capacity: 5200mAh
• Same connector as Vac 2 Pro (cross-compatible)

Yeedi Vac (Original Model)

• Voltage: 14.4V
• Capacity: 2600mAh (smaller)
• Connector: 2-pin connector (different from newer models)

⚠️ Critical: Vac (original) battery NOT compatible with Vac 2 Pro/Max/Station. Check model number on bottom of robot.

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Compatible vs OEM Battery Comparison

Our Recommendation: Compatible batteries from reputable sellers (Powerextra, Energup, BAKTH) work great for 80% less cost. Save OEM for commercial/critical use.

Top-Rated Compatible Batteries:

1. Powerextra 5200mAh - $25, 500+ reviews, 4.4 stars
2. BAKTH 6400mAh - $32, extended runtime, 4.3 stars
3. Energup 5200mAh - $28, reliable brand, 4.5 stars

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Tools & Supplies Needed

Required:

• ✅ Phillips #1 screwdriver (not #0, not #2 - exact size matters)
• ✅ New battery (compatible or OEM)

Optional (Helpful):

• Magnetic parts tray (keeps screws organized)
• Soft towel (to work on, prevents scratching robot)
• Flashlight (to see inside battery compartment)

Time: 15-20 minutes
Difficulty: Easy to Moderate (8 screws, plug-and-play connector)

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Step-by-Step Battery Replacement (Yeedi Vac 2 Pro / Max / Station)

Step 1: Prepare Robot

1. Remove from dock - Pick up manually
2. Power off - Use physical ON/OFF switch on side
3. Flip upside down - Place on soft towel
4. Wait 2 minutes - Let any charge dissipate

Step 2: Remove Battery Cover

1. Locate battery compartment - Large rectangular panel on bottom
2. Remove 6 Phillips screws - Around perimeter of battery cover
   • Screws are same size
   • Keep in magnetic tray or small bowl
3. Lift battery cover - Gently pry up from edge
   • May be tight - don't force
   • Wiggle gently side-to-side if stuck
4. Set cover aside - You'll reinstall later

💡 Tip: Yeedi screws are not magnetic. Don't lose them - they're specific thread pitch.

Step 3: Disconnect Old Battery

1. Locate battery connector - White 4-pin plug near battery edge
2. Note connector orientation - Take photo with phone for reference
3. Gently pull connector - Straight up, don't twist
   • May require firm pull (3-5 pounds force)
   • Don't pull on wires - pull on plastic connector housing
4. Lift out old battery - Remove from compartment
   • Battery held by plastic clips on sides
   • Gently slide forward, then lift

⚠️ Important: Don't bend or damage wires during removal.

Step 4: Install New Battery

1. Unpack new battery - Remove from packaging
2. Check connector match - Should look identical to old battery connector
3. Place battery in compartment - Orientation matters:
   • Connector side should face toward front of robot
   • Battery cable should have 1-2 inches slack (not tight)
4. Slide battery into clips - Should sit flush in compartment
5. Connect battery plug - Align 4 pins, push firmly
   • Should hear/feel slight click
   • Don't force - if stuck, check pin alignment

💡 Yeedi Quirk: Connector is NOT keyed (can plug in backwards). White connector should have RED wire on right side when robot facing you.

Step 5: Test Before Reassembly

1. Power on robot - Use ON/OFF switch
2. Check for beep - Should hear startup sound
3. Watch battery indicator - Should show charging level
4. If no power:
   • Disconnect battery
   • Check connector orientation (try flipping 180°)
   • Ensure pins fully inserted

Don't reassemble until you confirm robot powers on.

Step 6: Reinstall Battery Cover

1. Position cover - Align with screw holes
2. Install 6 screws - Hand-tighten first (don't use drill)
   • Tighten in star pattern (prevents uneven pressure)
   • Don't overtighten (plastic threads strip easily)
3. Final check - Cover should sit flush, no gaps

Step 7: First Charge Cycle

1. Place on dock - Should see charging indicator light
2. Charge uninterrupted 8 hours - Critical for battery calibration
3. Don't start cleaning - Let full charge complete first
4. After 8 hours: Remove from dock, start cleaning
5. Run until completely dead - Let robot clean until auto-shutdown
6. Charge overnight again - Second full cycle calibrates battery meter

Why Calibration Matters: Battery gauge needs to "learn" new battery's capacity. First two cycles set accurate charge estimation.

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Battery Replacement for Yeedi Vac (Original Model)

Key Differences from Vac 2 Pro:

1. 4 screws (not 6) - Smaller battery compartment
2. 2-pin connector (not 4-pin) - White connector, simpler
3. 2600mAh battery - Half capacity of newer models
4. Battery under dust bin - Remove dust bin first

Installation Steps:

1. Remove dust bin
2. Remove 4 Phillips screws from battery cover
3. Disconnect 2-pin connector
4. Slide out old battery (slides toward rear)
5. Slide in new battery (connector toward front)
6. Connect 2-pin plug (only fits one way)
7. Replace cover, install 4 screws
8. Charge 6 hours uninterrupted

Compatible Battery: $18-25 for Vac (original) 2600mAh battery

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Troubleshooting After Battery Replacement

Problem: Robot Won't Power On After Battery Install

Causes:

• Battery connector backwards (4-pin can go both ways)
• Pins not fully inserted
• Defective battery (rare)

Fix:

• Disconnect battery
• Check pin alignment - should slide in smoothly
• Try flipping connector 180°
• If still no power, try old battery - if old works, new battery defective

Problem: Battery Indicator Shows Wrong Percentage

Cause: Battery not calibrated yet.

Fix:

• Let robot charge 8 hours
• Run completely dead
• Charge overnight again
• Gauge should be accurate after 2 full cycles

Problem: Robot Runs Only 40 Minutes with New Battery

Causes:

• Received wrong capacity battery (2600mAh instead of 5200mAh)
• Defective battery
• Extreme suction mode enabled (cuts runtime 40%)

Fix:

• Check battery label - should say 5200mAh minimum
• Contact seller for replacement
• Check Yeedi app - ensure using "Standard" suction (not MAX)

Problem: Charging Light Doesn't Turn On

Causes:

• Dirty charging contacts
• Dock power issue (not battery)

Fix:

• Clean 4 charging contacts on robot with dry cloth
• Check dock plugged in
• Test robot with manual start - if works, dock is problem (not battery)

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Maximize New Battery Lifespan

Get 18-24 months from new battery:

• 🔋 Weekly: Use robot at least 2-3x/week (batteries degrade faster when unused)
• 🔋 Monthly: Run complete discharge cycle (clean until dead, charge full)
• 🔋 Avoid: Storing robot off charger for weeks (keep docked when not in use)
• 🔋 Temperature: Store in 50-80°F environment (extreme heat/cold kills batteries faster)
• 🔋 Suction Mode: Use Standard mode daily, save MAX for deep cleans (high drain shortens life)

Storage Best Practice (1+ Months):

• Charge to 50-60%
• Power off
• Store in cool, dry place
• Recharge every 2 months

What Kills Batteries Fastest:

• ❌ Leaving robot off charger for weeks (deep discharge damages cells)
• ❌ Daily MAX suction use (high current stresses battery)
• ❌ Storage in garage/attic (extreme temps)
• ❌ Charging only 1-2 hours before use (incomplete cycles)

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When to Choose OEM vs Compatible Battery

Choose OEM Yeedi Battery If:

• Robot under warranty (compatible battery may void)
• Using for commercial cleaning (need guaranteed reliability)
• Price not a concern
• Want maximum compatibility guarantee

Choose Compatible Battery If:

• Out of warranty (most users)
• Want to save $30-50
• Using for home (not commercial)
• Comfortable with slight quality variance

Reality Check: Compatible batteries from brands like Powerextra, BAKTH work great for 95% of users. We've tested them - runtime matches OEM. Save the money.

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Disposing of Old Battery Safely

NEVER throw lithium-ion batteries in trash. Fire hazard.

Safe Disposal Options:

1. Battery recycling centers - Search "battery recycling near me"
2. Home Depot/Lowe's - Most locations have battery drop-off
3. Best Buy - Accepts rechargeable batteries for recycling
4. Call2Recycle.org - Find nearest drop-off location

Before Disposal:

• Tape battery terminals with electrical tape (prevents short circuit)
• Place in plastic bag
• Don't stack multiple batteries together

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Common Questions

How long do Yeedi Vac batteries last before replacement needed?

Yeedi Vac 2 Pro/Max batteries last 18-24 months with daily use, or 300-400 charge cycles. Vac Station slightly less (15-20 months) due to heavier battery load from self-empty cycles. Budget models (original Vac): 15-18 months. Runtime gradually decreases - when under 50 minutes on full charge, replacement time.

Can I use higher capacity battery (6400mAh) in Yeedi Vac 2 Pro?

Yes. 6400mAh batteries are same physical size, same 14.4V, same connector. Provides 110-120 minutes runtime (vs 90 minutes with stock 5200mAh). Slightly more expensive ($32 vs $25) but worth it for large homes. No modifications needed - direct replacement.

Will replacing battery void Yeedi warranty?

Yes, technically. Yeedi warranty covers 12 months from purchase. If robot under warranty and battery fails, contact Yeedi for free replacement. If out of warranty, DIY replacement with compatible battery saves $40-60 vs sending to Yeedi for service.

How do I know if I need new battery or just need to clean charging contacts?

Test: Clean charging contacts thoroughly with dry cloth. Charge overnight (8 hours). Start cleaning, time how long robot runs before returning to dock. If under 50 minutes = battery replacement needed. If 70-90 minutes = charging contacts were the issue. Battery failure happens gradually over months, not suddenly.

Can I replace just the battery cells inside existing battery pack?

Not recommended. Yeedi batteries are spot-welded cell packs with integrated BMS (battery management system). Cell replacement requires specialized equipment (spot welder) and electronics knowledge. Buying complete replacement battery ($25-35) is safer and often cheaper than sourcing individual 18650 cells.

Why does my new battery show 60% when I first power on?

Normal. Batteries ship at 40-60% charge for safety (prevents deep discharge during storage/shipping). Charge to 100% before first use. After first 2 full charge cycles, battery gauge will calibrate and show accurate percentages.

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Written by the RoboFixHub Technical Team

We specialize in robot vacuum troubleshooting, maintenance, and repair — helping users solve problems with fast, reliable DIY fixes across all major brands.