Dell XCD28 Replacement Battery 3.7V 800mAh Li-ion
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Dell XCD28 Replacement Battery 3.7V 800mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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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.
Dell XCD28 Replacement Battery 3.7V 800mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
800mAh
Dell XCD28 — 3.7V Li-ion Replacement Battery
This is a 3.7V 800mAh Li-ion cell for the Dell XCD28 smartphone. It replaces the original battery when the phone no longer holds charge, shuts down unexpectedly, or fails to power on. Capacity is 800mAh (2.96Wh), matching the stock cell specification.
- XCD28 fit: The XCD28 uses a compact 3.7V single-cell Li-ion pack at 54.54 × 33.69 × 5.26mm. That exact footprint and voltage rail is what the phone's charge IC and fuel gauge IC expect. Any deviation in cell size or voltage triggers fit or calibration issues.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the bench. The BMS accepted charge without tripping cutoff, and the protection circuit responded correctly to simulated over-discharge conditions at the low-voltage threshold.
- Fuel gauge recalibration on first use: On first install, disable fast charging if available and run one complete discharge-charge cycle. This gives the XCD28's fuel gauge IC a full sweep of the new cell's discharge curve before it locks in its percentage calculations.
Why the XCD28 reports wrong battery percentage after a cell swap
The XCD28's fuel gauge IC learns the discharge curve of whichever cell it last fully cycled. When you swap in a new cell, the IC is still referencing the old curve. This causes the percentage readout to jump, stall, or report full charge when the cell is not. One complete discharge to near-empty followed by a full uninterrupted charge resets the coulomb counter and brings the readout back in line with actual cell state.
Sudden shutdown at 20–30% on the XCD28 after replacement
This happens when the cell voltage drops below the phone's minimum operating threshold under load — typically during screen-on or active data use — even though the fuel gauge still shows charge remaining. The root cause is an uncalibrated fuel gauge reading a voltage cliff on the new cell incorrectly. Run one full discharge-charge cycle without interruption. After calibration, the shutdown threshold and percentage display should align at approximately 3.4–3.5V under load.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Dell
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My XCD28 won't turn on at all after the replacement battery sat in a drawer for months — is it dead?
Most likely the cell discharged below 2.5V in storage, which triggers BMS lockout to prevent cell damage. Plug the phone into a wall charger — not a PC port — and leave it for 20–30 minutes before attempting to power on. The charge IC needs a small recovery current to bring the cell back above the BMS re-enable threshold. If the phone still won't respond after that, check the charger is delivering at least 5V at the connector.
The XCD28 percentage jumps around erratically — goes from 60% straight to 20% then back up — what's happening?
The fuel gauge IC is recalibrating against the new cell's discharge curve and hasn't completed a full reference cycle yet. This erratic behaviour is the coulomb counter correcting itself in real time as it gathers data. Run one full uninterrupted discharge — screen on, no charging — until the phone shuts off on its own, then charge to 100% without unplugging. After that single cycle, the percentage readout stabilises.
The XCD28 feels warm near the battery during the first charge after fitting a new cell — should I be concerned?
Some warmth on the first charge cycle is normal. A new cell has slightly higher internal impedance than a broken-in one, which means the charge IC works harder in the constant-current phase. The phone should stay cool enough to hold comfortably. If it becomes hot to the touch or the back panel flexes, stop charging immediately and check that the cell is seated flat with no pressure on the contacts. Normal first-charge warmth resolves by the second or third cycle as impedance drops.
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