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Pantech Element P4100 Replacement Battery PBR-43A 3.7V

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From $55.99 USD $68.99
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Fits Pantech Element P4100 tablets; replaces Pantech OEM battery part number PBR-43A.
3.7V and 5100mAh capacity deliver consistent power to display, processor, and WiFi radio throughout the day.
Connector seats flat against the tablet's internal receptacle with a single locking tab on the left edge.
We bench-tested the PBR-43A against a known good P4100 unit; the BMS accepted charge and negotiated voltage without fault codes.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this recalibrates the fuel gauge IC and clears inaccurate percentage displays common after a battery swap.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

🔹 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.

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⚠️ 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.

Voltage

3.7V

Amp

5100mAh

Pantech Element P4100 — 3.7V Li-Polymer Replacement Battery (PBR-43A)

This is a 3.7V, 5100mAh lithium-polymer replacement battery for the Pantech Element P4100 tablet. It matches the OEM PBR-43A specification and fits the original battery bay without modification. Replace it when the tablet no longer holds a charge or fails to power on from a depleted state.

  • Element P4100 fitment: The P4100 uses a flat Li-Polymer cell with a proprietary connector and a fuel gauge IC that communicates charge state to the Android OS. This cell matches the correct physical dimensions (138.30 × 112.90 × 4.30mm), connector pinout, and voltage curve the tablet's charge controller expects.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the P4100 and confirmed the BMS handshake completes without fault codes. The charge IC accepted the cell and proceeded through standard CC/CV phases without interruption.
  • Post-installation calibration cycle: After fitting this battery, run the tablet down to automatic shutoff — not a forced power-off — then charge it uninterrupted to 100%. This resets the fuel gauge IC against the new cell's actual capacity curve and eliminates the inaccurate percentage readings that typically appear after a swap.

Pantech Element P4100 shutting down at 15–25% remaining

This happens when the fuel gauge IC is still calibrated to the old, degraded cell's voltage curve. The new cell has a steeper voltage drop under combined display and WiFi load near the lower end of its charge range. The tablet's low-voltage protection trips earlier than the percentage display suggests. One full discharge-to-shutoff and uninterrupted recharge to 100% resets the calibration and pushes the actual cutoff below 10%.

Battery percentage jumping or reading incorrectly after swap

The P4100's fuel gauge IC stored discharge curve data from the original cell. A new cell with a different internal resistance profile causes the reported percentage to drift — often reading 30% while the tablet still has significant charge remaining, or jumping from 60% to 100% instantly on reconnect. This is not a fault with the replacement cell. Run one complete discharge cycle to automatic shutoff, then charge uninterrupted to 100% at 3.7V nominal — the gauge IC will map its reference points against the new cell and stabilise.

Compatible Models

Element P4100

Replaces Part Numbers

PBR-43A

Technical Specifications

Voltage3.7V
Amp Hours5100mAh
Capacity5100mAh
Rate18.87Wh
Net Weight106g /3.74 oz
Gross Weight246g /8.68 oz
Approximate Weight246g /8.68 oz
Dimension 138.30 x 112.90 x 4.30mm

Product Highlights

  • Brand: Pantech
  • 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 Element P4100 shuts off at around 20% after I put in the new battery — is the cell defective?

The cell is not defective. The tablet's fuel gauge IC is still using the discharge curve from the old battery, so it trips the low-voltage cutoff earlier than the actual charge remaining. Run the tablet down to automatic shutoff — do not force a power-off — then charge it uninterrupted to 100%. That single cycle recalibrates the gauge IC against the new cell and moves the cutoff below 10%.

Fast charging stopped working after I replaced the battery on my P4100 — it only charges slowly now.

The charge controller sometimes defaults to a conservative charge rate on the first cycle with an unrecognised cell. This is the IC protecting itself until it has one accepted charge cycle on record. Plug in using the original cable and charger and let it complete one full charge to 100% without interruption. On the second cycle, the controller will negotiate the correct charge rate and fast charging will resume.

The battery percentage on my P4100 jumps around — goes from 55% straight to 90% when I plug it in.

The fuel gauge IC logged thousands of data points from the old cell's impedance and voltage profile. The new cell has different internal resistance, so the IC's lookup table no longer maps accurately to actual state of charge. Discharge the tablet fully until it shuts itself off, then charge uninterrupted to 100% at the 3.7V nominal rate. After that single full cycle the IC recalculates its reference points and percentage reporting stabilises.

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Pantech Element P4100 Replacement Battery, 3.7V, 5100mAh, Li-Polymer 1

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