About this replacement
HP Slate 7 G2 1311 / 1315 — 3.7V Li-Polymer Replacement Battery (PR-3356130)
This is a 3.7V 2850mAh (10.55Wh) lithium-polymer replacement battery for the HP Slate 7 G2 tablet. It fits the 1311 and 1315 variants of the Slate 7 G2 and uses OEM part number PR-3356130. Install it when the original cell no longer holds a useful charge or swells and lifts the display.
- Slate 7 G2 1311 and 1315 compatibility: Both variants share the same 3.7V single-cell architecture, the same PR-3356130 connector pinout, and the same charge IC on the motherboard. One cell fits both.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the Slate 7 G2 platform. The charge IC accepted the new cell without error, and the BMS reported no fault flags across the test cycles.
- Fuel gauge reset after installation: After fitting this battery, run the tablet down to automatic shutoff, then charge it uninterrupted to 100% before use. The Slate 7 G2 fuel gauge IC calibrates against the old cell's wear curve — one full cycle resets that calibration against the new cell and clears inaccurate percentage readings.
Tablet warm during the first few charge cycles after a battery swap
The Slate 7 G2 charge IC runs a conditioning pass on a new lithium-polymer cell during the first two or three charges. During this pass, charge current is slightly higher than steady-state, which produces more heat at the cell. The tablet back will feel warm — not hot — and this is normal. It settles after the cell is conditioned. If the device becomes too hot to hold, disconnect and check that the replacement cell voltage matches the 3.7V nominal spec.
Slate 7 G2 shutting down at 15–25% with no warning
This happens when the display backlight and active WiFi pull simultaneous load and the cell voltage drops below the BMS cutoff threshold before the reported percentage reaches zero. The fuel gauge was calibrated to the old worn cell, so the percentage reading lags the real voltage. A full discharge-to-shutoff followed by an uninterrupted charge to 100% resets the calibration. After that cycle, the percentage should track the actual cell voltage and shutdowns at 15–25% stop.