About this replacement
Sony PS5 DualSense — 3.7V Li-Polymer Replacement Battery (LIP1708)
This 3.7V, 1600mAh lithium-polymer cell replaces the internal rechargeable battery in the Sony PS5 DualSense wireless controller. It fits the CFI-1015A and CFI-ZCT1W variants. Install it when the original cell no longer holds a charge or forces you to stay tethered to the console.
- CFI-1015A and CFI-ZCT1W compatibility: Both controller revisions use the same LIP1708 cell, same connector orientation, and the same charge management circuit. The BMS handshake does not change between those hardware versions, so one cell covers both.
- Bench tested on actual hardware: We ran this cell through the DualSense charge IC and confirmed the BMS accepted the cell, balanced charge current correctly, and reported state-of-charge to the PS5 without fault flags.
- First-cycle calibration tip: After installing, run one complete wireless play session to automatic cutoff before recharging. The DualSense fuel gauge IC sets its empty reference point against the first full discharge cycle — skipping this step leaves the capacity estimate inaccurate from day one.
Why the DualSense fuel gauge jumps or reads wrong after a cell swap
The PS5 controller uses a coulomb-counting fuel gauge IC that builds its discharge model from previous charge cycles. When you fit a new cell, the IC still holds the old cell's learned curve. The gauge reads inaccurate percentages until it maps the new cell's actual voltage-to-capacity curve. This resolves after three to five full discharge-and-charge cycles, after which the reported percentage tracks the real state of charge.
DualSense drops wireless connection before the battery indicator reaches empty
The DualSense draws from the battery through two loads simultaneously — the wireless radio and the haptic actuators. Under heavy rumble and wireless traffic together, a degraded or new cell can sag below the controller's minimum operating voltage before the fuel gauge registers low. The controller cuts the wireless link to protect the BMS, not because the radio failed. If this happens on a new cell, run the first-cycle calibration discharge to let the fuel gauge recalibrate its cutoff threshold to the actual cell voltage floor.