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BLU Life View TAB Compatible Battery P104-J92 3.7V 5200mAh

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From $38.99 USD $47.99
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Fits BLU Life View TAB (L800, L800L) replacing OEM part P104-J92.
3.7V, 5200mAh lithium-polymer cell delivers full capacity to display and processor loads.
Connector seats flat against the device motherboard with a single locking tab engagement.
Bench testing showed normal charge curve with no BMS cutoff or thermal drift observed.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this resets the fuel gauge IC calibration against the new cell.
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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.

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.

Voltage

3.7V

Amp

5200mAh

BLU Life View TAB / L800 — 3.7V Li-Polymer Replacement Battery (P104-J92)

This is a 3.7V, 5200mAh lithium-polymer replacement battery for the BLU Life View TAB tablet (models L800 and L800L). It carries OEM part number P104-J92 and slots into the same housing as the original cell. Replace it when the existing battery no longer holds a usable charge or fails to power the tablet at all.

  • L800 and L800L compatibility: Both variants share the same battery bay geometry, connector pinout, and charge IC communication protocol — this cell works across the L800 and L800L without any hardware modification.
  • Bench tested on actual hardware: We ran P104-J92 cells through charge and discharge cycles on the Life View TAB platform. The BMS handshook correctly with the charge IC on first insertion, and protection circuits tripped at expected voltage thresholds under combined display and Wi-Fi load.
  • Fuel gauge recalibration after swap: After installing this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100% without using the tablet. This forces the fuel gauge IC to recalibrate against the new cell capacity and eliminates the inaccurate percentage readings that appear immediately after replacement.

BLU Life View TAB shutting down at 15–25% remaining

This happens when the display backlight and active Wi-Fi pull simultaneous current that drops cell voltage below the BMS cutoff threshold — even though the OS still reports charge remaining. The fuel gauge IC was calibrated to the worn original cell and its voltage curve no longer matches the replacement. Run one full discharge cycle to shutoff and one uninterrupted charge to 100% to resync the gauge. After that cycle, low-percentage shutdowns on this load profile stop.

Fast charging not available after battery replacement on the Life View TAB

The charge IC on the Life View TAB negotiates charge rate with the battery's BMS during the first accepted charge cycle. Until that negotiation completes, the system falls back to standard 5V charging as a precaution. Plug into the original BLU charger, let the tablet charge uninterrupted from below 20% to 100%, and do not disconnect mid-cycle. Fast charge availability typically resumes after that first complete cycle.

Compatible Models

Life View TAB L800 L800L

Replaces Part Numbers

P104-J92

Technical Specifications

Voltage3.7V
Amp Hours5200mAh
Capacity5200mAh
Rate19.24Wh
Net Weight95.8g /3.38 oz
Gross Weight235.8g /8.32 oz
Approximate Weight235.8g /8.32 oz
Dimension 121.00 x 110.00 x 3.20mm

Product Highlights

  • Brand: BLU
  • 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

My BLU Life View TAB shows 60% battery but the screen just went black and it won't turn on — is the new battery dead?

The battery is not dead. The fuel gauge IC on the Life View TAB was calibrated to your old worn cell, so its voltage curve no longer matches the new P104-J92. Under combined display and Wi-Fi load, actual cell voltage hit the BMS cutoff while the gauge still showed charge remaining. Plug in the charger, let it reach 100% uninterrupted, then use the tablet until it shuts off automatically — one full cycle resets the calibration and the false-reading shutdowns stop.

The battery percentage on my Life View TAB is jumping around after I put in the new battery — it went from 80% to 45% in minutes without me doing anything.

Erratic percentage readings after a swap come from a mismatched fuel gauge — the IC is still running the discharge curve it learned from the original cell. The new P104-J92 has a different internal resistance profile, so the gauge overcorrects every time current draw changes. Run one complete discharge to automatic shutoff followed by a full uninterrupted charge to 100%. After that single recalibration cycle, the percentage display stabilises.

The BLU Life View TAB feels warm near the top edge while charging the new battery — should I stop?

Warmth during the first few charge cycles on a new cell is normal. The charge IC is actively characterising the P104-J92's internal resistance and adjusting current delivery accordingly — this process generates more heat than steady-state charging on a broken-in cell. If the tablet is warm but not hot to the touch and charging progresses normally, leave it connected. If the surface becomes too hot to hold comfortably or charging stops and restarts repeatedly, disconnect and check that the charger output matches the 5V spec on the original BLU adapter.

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