About this replacement
Sony DualShock 4 CUH-ZCT2 / CUH-ZCT2U — 3.7V Li-ion Replacement Battery (KCR1410)
This is a 3.7V 1000mAh Li-ion cell that replaces the original KCR1410 battery in the PS4 DualShock 4 controller. It fits the CUH-ZCT2 and CUH-ZCT2U revision controllers, along with earlier DualShock 4 variants that use the same cell format. When the original cell degrades and the controller dies faster than expected, swapping this cell restores the controller without buying a replacement unit.
- CUH-ZCT2 and CUH-ZCT2U compatibility: Both revisions run the same 3.7V single-cell architecture with identical connector pinout and BMS communication protocol. The KCR1410 footprint — 52 × 34.1 × 7.3mm — fits the battery bay without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a CUH-ZCT2U with wireless and rumble active. The BMS accepted the cell without flagging an error, and the charge IC stepped through trickle, CC, and CV phases correctly.
- First-cycle calibration on the DualShock 4: After installation, run one full wireless session to automatic cutoff before recharging. The DualShock 4 fuel gauge IC sets its empty reference point against the first complete discharge — skipping this step causes the indicator to read inaccurately for several cycles.
DualShock 4 fuel gauge jumping after a cell swap
The PS4 controller uses a fuel gauge IC that tracks coulombs in and out to estimate remaining charge. When the original cell is replaced, the IC still holds the discharge curve profile it mapped to the old, degraded cell. The mismatch causes the percentage display to jump — sometimes from 80% straight to a low-battery warning. This resolves after two to three full discharge-and-charge cycles, as the IC remaps against the new cell's actual curve.
Controller dropping wireless connection before the battery indicator hits empty
This happens when the cell voltage sags below the controller's RF module threshold under combined wireless and rumble load — even though the fuel gauge still shows charge remaining. A degraded or unconditioned cell has higher internal resistance, so voltage drops sharply under peak draw. With a new cell, this symptom typically clears after three to five conditioning cycles, once internal resistance stabilises. If it persists past five cycles, check that the battery connector is fully seated — a loose contact raises effective resistance and mimics a weak cell.