Motorola Xoom Family Edition BATBJA0L21 Replacement Battery 3.7V 6700mAh
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
WECARE5
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.
Motorola Xoom Family Edition BATBJA0L21 Replacement Battery 3.7V 6700mAh - 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.
Motorola Xoom Family Edition BATBJA0L21 Replacement Battery 3.7V 6700mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
6700mAh
Motorola Xoom Family Edition MZ505 — 3.7V Li-Polymer Replacement Battery (BATBJA0L21)
This 3.7V 6700mAh lithium-polymer battery replaces the original BATBJA0L21 cell in the Motorola Xoom Family Edition tablet. It fits the MZ505 and Xoom 10.1 variants. The battery powers the display, processor, wireless radios, and all active applications on these 10-inch Android tablets.
- MZ505 and Xoom 10.1 compatibility: All three listed models share the same charge IC, connector pinout, and BMS handshake protocol. The BATBJA0L21 part number covers the full Xoom Family Edition lineup — no hardware differences affect fitment across these variants.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on an MZ505 unit. The BMS accepted the new cell without fault codes, completed a full charge curve normally, and the charge IC held steady at the expected termination voltage.
- Fuel gauge reset after installation: After fitting the new battery, run the tablet down to automatic shutoff from a full charge, then charge it uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell's actual capacity curve and corrects the inaccurate percentage readings that appear right after a swap.
Tablet shutting down at 15–25% remaining after battery replacement
This happens when the fuel gauge IC is still calibrated to the old, degraded cell. The reported percentage no longer maps correctly to actual cell voltage. Under combined display and WiFi load, voltage drops sharply at a point the IC doesn't recognise as low — triggering an emergency shutdown before the reading hits zero. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% resets the calibration and eliminates the premature cutoff.
Percentage dropping faster than expected from 100% on the Xoom MZ505
A new cell has a different internal resistance profile than the worn cell the fuel gauge was trained on. The IC misreads the voltage slope and reports capacity draining faster than it actually is. This is gauge drift, not a defective battery. Run one complete cycle — full discharge to automatic shutoff, then a full uninterrupted charge — and the gauge recalibrates to the 6700mAh capacity of the replacement cell.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Motorola
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
Why does my Xoom Family Edition show the wrong battery percentage after I put in a new battery?
The fuel gauge IC on the MZ505 learns the capacity curve of the cell it's paired with over time. When you install a new cell, the IC is still calibrated to the old, degraded one and misreports the actual state of charge. Run the tablet from a full charge down to automatic shutoff, then charge it uninterrupted to 100% — one complete cycle recalibrates the gauge to the replacement cell's actual 6700mAh capacity.
My Xoom tablet feels warm while charging with the new battery — is something wrong?
Warmth during charge is normal when the charge IC runs its first full cycle on a new cell. The IC actively manages current across the full charge curve, and that generates some heat — particularly in the upper voltage range above 4.1V. If the tablet is hot to the touch or charging stops unexpectedly, check that the charging port and cable are clean and undamaged, then retry with a known-good 5V adapter.
Fast charging stopped working on my Xoom MZ505 after the battery swap — what happened?
Some charge protocols require at least one completed charge cycle before the device renegotiates charging behaviour with the adapter. Plug in, let the tablet charge fully without interruption, then disconnect and reconnect the charger. If fast charging still doesn't engage, confirm the adapter output matches the original spec — the Xoom MZ505 charge IC will fall back to standard current if it doesn't recognise the adapter.
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.
-
Up to 20% offNew arrival
BatteryWeb
Asus MeMO Pad HD7 Compatible Battery C11P1304 3.8V 3900mAh
0.23 lb
Sale priceFrom $29.99 USD Regular price $36.99Unit priceIn stock (39 units) -
-
Up to 19% offNew arrival
BatteryWeb
Lenovo ThinkPad 1838 Replacement Battery 42T4963 7.4V 3200mAh
0.61 lb
Sale priceFrom $71.99 USD Regular price $88.99Unit priceIn stock (72 units) -
-
Up to 21% offNew arrival
BatteryWeb
Asus Eee Pad MeMo EP71 C11-EP71 Compatible Battery 3.7V 4400mAh
0.23 lb
Sale priceFrom $23.99 USD Regular price $29.99Unit priceIn stock (33 units) -
-
Up to 20% offNew arrival
BatteryWeb
Motorola TB40 Xoom 2 10.1 Replacement Battery 3.7V
0.6 lb
Sale priceFrom $43.99 USD Regular price $54.99Unit priceIn stock (198 units) -
-
Up to 20% offNew arrival
BatteryWeb
Acer Iconia Tab W510 Replacement Battery AP12D8K 3.7V
0.63 lb
Sale priceFrom $44.99 USD Regular price $55.99Unit priceIn stock (12 units) -
-
Up to 21% offNew arrival
BatteryWeb
Google Nexus 7 Replacement Battery 3.7V 4300mAh C11-ME370T
0.24 lb
Sale priceFrom $30.99 USD Regular price $38.99Unit priceIn stock (81 units) -
-
Up to 21% offNew arrival
BatteryWeb
Asus MeMO Pad ME370T Replacement Battery 3.7V 4300mAh
0.24 lb
Sale priceFrom $30.99 USD Regular price $38.99Unit priceIn stock (81 units) -
-
Up to 19% offNew arrival
BatteryWeb
Asus Eee Transformer TF101 Compatible Battery 7.4V 3300mAh
0.59 lb
Sale priceFrom $46.99 USD Regular price $57.99Unit priceIn stock (72 units) -
