T-Mobile Ville PJ40110 Compatible Battery 3.7V 1650mAh
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T-Mobile Ville PJ40110 Compatible Battery 3.7V 1650mAh - 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.
T-Mobile Ville PJ40110 Compatible Battery 3.7V 1650mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
1650mAh
T-Mobile HTC Ville (PJ40110) — 3.7V Li-Polymer Replacement Battery
This is a 3.7V, 1650mAh Li-Polymer replacement battery for the T-Mobile HTC Ville smartphone. It fits the Ville hardware directly, matching the PJ40110 cell specification. Install it when the original cell can no longer hold a full charge or the phone shuts down unexpectedly under load.
- Ville and PJ40110 fitment: Both the Ville and its PJ40110 cell designation share the same connector pinout, PCM layout, and 3.7V nominal voltage rail. The physical dimensions — 60.20 x 54.20 x 4.30mm — match the battery bay without modification. No adapter or rewiring needed.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the Ville platform. The BMS handshake completed correctly, charge IC accepted the cell, and voltage held steady across display-on and modem-active load states.
- Fuel gauge recalibration on first cycle: On first use after installation, run the phone to near-empty before charging fully. This lets the coulomb counter recalibrate against the new cell's actual discharge curve — skipping this step causes the OS to read incorrect percentages for the first several days.
Why the Ville reports wrong battery percentage after a cell swap
The HTC Ville uses a fuel gauge IC that builds its charge model against the previous cell's impedance and discharge curve. When a new cell goes in, that model is stale. The OS reads a percentage derived from outdated coulomb counter data, so the number on screen drifts from actual capacity. One complete discharge-to-charge cycle forces the IC to rewrite its reference curve against the new cell. After that cycle, percentage readings stabilise.
Sudden shutdown at 20–30% on the replacement cell
This is a voltage cliff problem, not a capacity problem. Under high-draw states — modem active, screen at full brightness — the cell voltage drops sharply below the BMS cutoff threshold before the fuel gauge reaches 0%. The phone treats this as a hard undervoltage event and cuts power. Charge the phone fully, then run one complete discharge cycle to let the fuel gauge IC remap the voltage-to-percentage relationship for this cell. After calibration, the shutdown point should shift back toward 5–8%.
Compatible Models
Technical Specifications
Product Highlights
- Brand: T-Mobile
- 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
The Ville won't turn on at all after sitting in a drawer for months — is the battery dead?
Most likely the cell discharged below the BMS lockout threshold, which sits around 2.5V per cell. At that voltage, the protection circuit cuts output entirely and the phone shows no signs of life. Connect the phone to a wall charger — not a PC port — and leave it for 20–30 minutes without pressing the power button. If the BMS recovers, the charging LED will appear. If there is no response after 45 minutes, the cell has self-discharged past recovery and the replacement cell is the fix.
The phone feels warm near the battery compartment for the first few charge cycles after fitting the new cell — is something wrong?
This is expected on a new high-impedance Li-Polymer cell. The charge IC on the Ville applies its standard current profile, but a fresh cell has slightly higher internal resistance than a broken-in one, so more energy converts to heat during the first few cycles. Warmth — not hot — is normal. If the phone becomes too hot to hold comfortably, stop the charge and let it cool to room temperature before resuming. After three to four full cycles, internal resistance drops and the warmth goes away.
The battery percentage jumps around — goes from 60% to 45% in seconds, then back up — what causes that?
The fuel gauge IC is recalibrating against the new cell's discharge curve and hasn't finished building an accurate voltage-to-percentage map yet. The coulomb counter is still referencing data from the old cell, so readings spike when voltage shifts under load. Run two full discharge-and-charge cycles without interrupting mid-charge. By the end of the second cycle, the IC rewrites its reference table and the percentage display stabilises to within a few points of actual remaining capacity.
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