Parrot Zik 2.0 Replacement Battery 3.7V 750mAh 1ICP7/28/35

Parrot Zik 2.0 / Zik 3.0 — 3.7V Li-ion Replacement Battery (1ICP7/28/35)

This is a 3.7V, 750mAh Li-ion cell built to OEM part number 1ICP7/28/35. It fits the Parrot Zik 2.0 and Zik 3.0 wireless headphones. Swap it when the original cell no longer holds a charge or the headset shuts off during use.

• Zik 2.0 and Zik 3.0 compatibility: Both models run the same 3.7V cell with an identical connector footprint and BMS handshake. The physical dimensions — 39.67 × 28.00 × 7.50mm — match the internal tray on both headsets without modification.
• Bench tested on actual hardware: We cycled this cell through charge and draw sequences that mirror the combined audio processing and active noise-cancellation load. The BMS held cutoff voltage correctly and did not trip on the DSP startup spike.
• First charge on Zik headsets: Place the headset in the Parrot charging cable or dock and run a full charge cycle before use. The Zik firmware reads cell state during that first cycle and calibrates its battery indicator — skipping it leaves the gauge inaccurate from day one.

Why the Zik 2.0 cuts out mid-call on a fresh battery

The Zik 2.0 runs active noise cancellation, Bluetooth audio, and the microphone chain simultaneously. That combined draw creates short current spikes the BMS can mistake for an over-discharge event if the cell voltage is not yet stabilised. On a new cell that has not completed its first full charge cycle, the resting voltage sits lower than the firmware expects, making cutouts more likely. Run two full charge-discharge cycles and the BMS trip threshold aligns with actual cell capacity.

Talk time shorter than rated on the first few uses

Li-ion cells do not deliver full capacity straight out of the packaging — internal resistance is slightly elevated until the electrodes condition through charge cycles. On the Zik 2.0 and 3.0, this shows up as noticeably shorter listening sessions for the first three to five cycles. Capacity climbs incrementally with each full cycle and stabilises around cycle four or five. If talk time is still short after five full cycles, check that the cell voltage at full charge reads 4.1–4.2V at the battery terminals.