Motorola Moto E BL40 Replacement Battery 3.8V 1980mAh
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Motorola Moto E BL40 Replacement Battery 3.8V 1980mAh - 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.
Motorola Moto E BL40 Replacement Battery 3.8V 1980mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.8V
Amp
1980mAh
Motorola Moto E / XT1021 / XT1025 — 3.8V Li-Polymer Replacement Battery (BL40)
This is a 3.8V, 1980mAh lithium-polymer battery that replaces the OEM BL40 cell in the Motorola Moto E series. It fits the XT1021, XT1025, Moto E Dual TV, and related variants. The battery powers the processor, display, cellular radio, and all background services on these devices.
- XT1021 / XT1025 / Moto E Dual TV compatibility: These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One BL40 cell covers the full group without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a Moto E unit. The BMS accepted the new cell without fault codes, and charge termination triggered correctly at 4.35V.
- Fuel gauge recalibration after swap: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.
Sudden shutdown at 20–30% on the Moto E after a cell swap
This happens because the fuel gauge IC is still calibrated to the old cell's voltage-versus-capacity curve. The new cell hits a steeper voltage cliff under modem or display load, and the IC reports 25% while the actual cell voltage has already dropped below the cutoff threshold. The phone shuts down to protect the cell — the percentage shown is simply wrong at that stage. Run one full discharge to near-zero and a complete charge to 100% without interruption to let the coulomb counter re-anchor to the new cell.
Phone warm near the battery during the first few charges after replacement
A fresh high-impedance cell generates more heat than a worn one during the initial charge cycles. The charge IC applies its standard current profile, but internal resistance on a new cell is slightly higher, so more energy converts to heat before the cell is broken in. This is normal for the first three to five cycles and fades as internal resistance drops. If the phone remains warm after five full cycles, verify the charge IC is not applying a fast-charge profile by checking the charging settings under the battery menu.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Motorola
- Manufacturer: CS
- Series: X-Longer
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Moto E shuts off at around 25% after putting in the new BL40 — is the battery faulty?
The battery is not faulty. The fuel gauge IC stored the discharge curve of the old, degraded cell and is now reading the wrong percentage against the new cell's voltage profile. The new cell's voltage drops faster under modem and screen load than the IC expects, triggering a low-voltage cutoff while the display still shows 20–30%. Run one uninterrupted discharge to near-zero followed by a full charge to 100% — this resets the coulomb counter to the new cell's actual capacity curve.
The Moto E won't power on at all after the replacement battery sat in storage for a few months — what happened?
Lithium-polymer cells self-discharge in storage, and if the cell dropped below approximately 2.5V, the BMS trips a deep-discharge lockout to prevent an unsafe charge attempt. Plug the phone into a wall charger — not a USB port — and leave it for 20–30 minutes without pressing anything. The charge IC will apply a low-current trickle to bring the cell back above the BMS re-enable threshold, typically around 3.0V, at which point the phone should respond normally.
Fast charging stopped working on my Moto E right after I installed the BL40 — the phone just slow-charges now.
On the first cycle after a cell swap, some charge ICs default to a conservative constant-current profile until the BMS has completed one handshake cycle with the new cell. This means the USB fast-charge negotiation is bypassed temporarily as a precaution. Complete one full charge from near-zero to 100% using the original Motorola wall adapter — not a third-party charger. After that cycle, fast charging should re-engage on the next plug-in.
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