About this replacement
Sony Xperia Z5 Premium — 3.8V Li-Polymer Replacement Battery (LIS1605ERPC)
This 3.8V, 3400mAh (12.92Wh) Li-Polymer cell replaces the original LIS1605ERPC battery in the Sony Xperia Z5 Premium and Z5 Premium Dual. It fits models E6853 and E6883. Dimensions are 85.60 × 61.94 × 4.40mm — match these against your existing cell before installation.
- E6853 and E6883 compatibility: Both the single and dual-SIM Z5 Premium variants use the same battery bay dimensions, connector pinout, and BMS handshake protocol. One cell fits both boards without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the Z5 Premium platform. The BMS accepted the new cell without fault flags, and charge termination triggered correctly at 4.35V.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins on an uncalibrated coulomb counter.
Sudden shutdown at 20–30% on the Z5 Premium after a cell swap
The Z5 Premium's Snapdragon 810 and 4K display pull significant current bursts under combined load. A new cell with a slightly higher internal impedance than the aged original can cause a brief voltage sag during these bursts. When cell voltage drops below the BMS cutoff threshold — even momentarily — the phone shuts down despite the fuel gauge reporting charge remaining. This is not a faulty cell. Run two full discharge-charge cycles at standard rate and the BMS will establish a stable low-voltage floor for the new cell.
OS reporting wrong battery percentage after replacement
Android's fuel gauge IC on the Z5 Premium stores a learned discharge curve from the old cell in its coulomb counter. After swapping cells, that stored curve no longer matches the new cell's actual capacity profile, so percentage readings drift or jump. The fix is one complete uninterrupted discharge down to automatic shutdown, followed by a full charge to 100% without interruption. After that cycle, the fuel gauge IC recalibrates against the new cell and percentage readings stabilise.