About this replacement
Samsung Galaxy TabPRO 8.4 Series — 3.8V Li-Polymer Replacement Battery (T4800E)
This is a 3.8V, 4800mAh Li-Polymer battery for the Samsung Galaxy TabPRO 8.4 line, including SM-T320, SM-T325, SM-T327A, and related variants. It replaces OEM part T4800E directly. Capacity is rated at 18.24Wh, matching the original cell specification.
- SM-T320, SM-T325, SM-T327A compatibility: These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The T4800E cell works across all three without adapter or wiring modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an SM-T325. The BMS reported correct voltage at each state-of-charge threshold, and the charge IC accepted the cell without fault flags on either the hardware or software side.
- Fuel gauge recalibration after swap: After installation, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without unplugging early. This single full cycle resets the fuel gauge IC against the new cell's actual capacity curve and clears the inaccurate percentage readings that appear immediately after a battery swap.
Why the Galaxy TabPRO 8.4 shuts down at 15–25% remaining
The SM-T325 runs a high-resolution display alongside simultaneous WiFi and processor activity. Under that combined load, voltage sags faster than the fuel gauge IC can track in real time. The tablet's protection circuit reads voltage, not just percentage, and it triggers a shutdown when the cell hits its low-voltage cutoff — even if the screen still shows 18% or 22%. After the recalibration cycle described above, the fuel gauge maps the new cell's actual voltage curve, and the premature shutdowns typically stop.
Fast charging not available after battery replacement
Some SM-T325 units stop offering fast charge immediately after a battery swap and revert to standard charge rates. The charge IC on the tablet negotiates charge current during the first full accepted cycle on a new cell — until that cycle completes, it defaults to a conservative current profile. Run one complete charge from near-zero to 100% without interruption. After that first uninterrupted cycle, fast charge negotiation resumes and the device returns to normal charge behaviour.