Lenovo Yoga Smart Tab L19D2P32 Replacement Battery 3.85V 6800mAh

Lenovo Yoga Smart Tab YT-X705F — 3.85V Li-Polymer Replacement Battery (L19D2P32)

This 3.85V 6800mAh Li-Polymer battery replaces the OEM L19D2P32 cell in the Lenovo Yoga Smart Tab (YT-X705F). It fits the same footprint as the original at 167.20 x 101.60 x 2.80mm and connects via the stock ZIF connector on the tablet's charge board. Capacity is rated at 26.18Wh, matching the original specification.

• YT-X705F platform fit: The Yoga Smart Tab line uses a single flat Li-Polymer pouch cell with a shared BMS handshake tied to the charge IC on the motherboard. This replacement carries the same cell geometry and connector pinout, so the charge IC recognises it without firmware intervention.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a YT-X705F unit. The BMS accepted the cell immediately, charge current ramped correctly through CC and CV phases, and the protection circuit tripped at the expected low-voltage cutoff without anomalies.
• Fuel gauge reset after installation: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The tablet's fuel gauge IC is calibrated to the old cell's internal resistance profile — one complete cycle resets it against the new cell and clears the inaccurate percentage readings that appear immediately after a swap.

Yoga Smart Tab shutting down at 15–25% remaining

When the display is at full brightness and Wi-Fi is actively streaming, the combined load on a degraded or uncalibrated cell creates a voltage sag the BMS reads as a low-voltage cutoff event. The tablet shuts down even though the reported percentage still shows double digits. This happens because the fuel gauge is working from a state-of-charge model that no longer matches the actual cell chemistry after degradation — or after a fresh swap before recalibration. Run one full discharge-to-shutoff cycle, charge to 100% uninterrupted, and the cutoff threshold should align correctly with the reported percentage.

Fast charging not available after battery swap on the YT-X705F

The Yoga Smart Tab uses USB Power Delivery negotiation to step up charge current beyond standard 5V rates. After a battery replacement, the charge IC on the motherboard sometimes withholds PD negotiation until it has completed at least one accepted charge cycle with the new cell. Plug in with the original Lenovo charger — not a third-party cable — and allow a full charge to 100%. On the next charge session, the tablet should negotiate the higher voltage tier and fast charging resumes. Confirm the charger output is rated at 18W or above, as lower-rated adapters will not trigger PD regardless of cell state.