Auto Cleaner M-488 Replacement Battery 14.4V 4000mAh Ni-MH
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Auto Cleaner M-488 Replacement Battery 14.4V 4000mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Auto Cleaner M-488 Replacement Battery 14.4V 4000mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
14.4V
Amp
4000mAh
Auto Cleaner Intelligent Floor Vac M-488 — 14.4V Ni-MH Replacement Battery
This is a 14.4V 4000mAh Ni-MH replacement battery for the Auto Cleaner Intelligent Floor Vac M-488 cordless vacuum. It replaces the original pack when capacity has faded and the vacuum no longer holds a useful charge. Dimensions are 136.10 x 55.90 x 47.20mm — confirm fit before ordering.
- M-488 platform fit: The M-488 runs a 14.4V battery rail with a Ni-MH cell stack — this replacement matches that voltage and connector configuration. Swapping chemistry or voltage on this vacuum will cause the charger circuit to behave incorrectly.
- Bench tested on actual hardware: We ran this pack through the M-488 charge cycle and monitored BMS response under normal floor and carpet load. Cell balancing remained stable and the pack reached full charge without triggering thermal cutoff.
- Dock charging habit on the M-488: Do not leave the M-488 sitting on the charging dock after the pack is full. Ni-MH cells in continuous trickle charge degrade significantly faster than cells charged only when depleted. Charge to full, then remove from dock.
Suction dropping before the battery indicator reaches low on the M-488
Ni-MH cells lose voltage under load before the resting voltage drops enough to trigger the low-battery indicator. On the M-488, a partially blocked filter forces the motor to draw more current than rated, which accelerates that voltage sag under load. The result is noticeably weaker suction while the indicator still shows charge remaining. Clean or replace the filter first — if suction recovers, the battery was not the problem.
M-488 motor cuts out mid-clean and then restarts after a few seconds
This is a BMS overcurrent trip, not a dead battery. When the filter is partially blocked, airflow restriction causes the motor to draw sustained current above the pack's trip threshold. The BMS cuts power to protect the cells, then resets after a short recovery window. Clear the filter and check for blockages in the suction path before assuming the battery pack is faulty — if the motor still trips on a clean filter, measure resting voltage and confirm the pack holds above 13.0V at rest.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Auto Cleaner
- Manufacturer: CS
- Series: Standard
- Color: Yellow
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My M-488 loses suction halfway through a room but the battery light still shows full — is the new battery already failing?
Almost certainly not the battery. On the M-488, a restricted filter forces the motor to pull more current than rated, which drops cell voltage under load before the indicator responds. The indicator reads resting voltage, not load voltage — so it can show full while suction is already sagging. Clean the filter first; if suction returns, the pack is fine.
The M-488 motor keeps cutting out for a few seconds and then comes back on — what's happening?
That's the BMS tripping on an overcurrent event, not a failed battery. Sustained airflow restriction — usually a clogged filter or blocked inlet — pushes motor draw past the pack's trip threshold. The BMS cuts output to protect the cells, then resets after a brief pause. Clear the blockage and retest; if it still trips on a clean filter, check that resting voltage is above 13.0V before replacing the pack.
I've had this replacement battery for a few months and it already seems to be losing capacity — I leave the M-488 on the dock between uses. Could that be the cause?
Yes, continuous dock charging is the most common cause of early capacity fade in Ni-MH vacuum packs. Trickle charge across fully charged Ni-MH cells generates heat and accelerates cell degradation faster than normal cycle wear. The fix is simple: charge the M-488 only when the battery is depleted, then remove it from the dock once the charge light clears. Following that habit from the first cycle will keep capacity closer to rated across the pack's lifespan.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Related Products
Engineered for Performance. Built to Last.
Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.






