Samsung YP-YH7 Replacement Battery 3.7V 970mAh PPSB0606B

Samsung YP-YH7 — 3.7V Li-ion Replacement Battery (PPSB0606B)

This is a 3.7V, 970mAh Li-ion battery for the Samsung YP-YH7 portable media player. It replaces part number PPSB0606B directly. Fit the replacement when the original cell no longer holds a charge or the player stops powering on after storage.

• YP-YH7 platform fit: The YP-YH7 uses a single-cell 3.7V Li-ion pack with a three-pin connector carrying charge, ground, and a thermistor line. This replacement matches that connector pinout and cell voltage, so the device's onboard charge controller reads it correctly without any modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the YP-YH7 board. The BMS accepted the cell without a protection trip, and the charge controller completed a full constant-current to constant-voltage charge cycle without flagging an error.
• Post-swap charge cycle on the YP-YH7: After fitting this battery, connect the player to its charger before attempting to power it on. The YP-YH7's charge controller uses a trickle pre-charge stage for cells below 3.0V — skipping this step and forcing a boot can trip the low-voltage cutoff and make the player appear dead.

Battery percentage jumping around after fitting the PPSB0606B

The YP-YH7 estimates charge level by mapping resting voltage to a percentage table calibrated to the original cell. A new cell has a slightly different discharge curve, so the indicator can read 80% one moment and drop to 40% the next. This settles after two or three full charge and discharge cycles, which lets the firmware re-anchor its voltage thresholds to the new cell. Run the player down until it shuts off automatically, then charge fully — repeat twice and the percentage display stabilises.

Playback cutting out before the battery indicator shows empty

The audio amplifier in the YP-YH7 draws a short current spike when driving headphones at higher volumes. Near the end of discharge, cell voltage sags under that load and briefly dips below the amplifier's minimum supply voltage, causing the audio to cut or the player to reset. The battery indicator is reading resting voltage, which looks fine — it's the loaded voltage that's the problem. If this happens on a new cell, check that the connector is fully seated; a loose pin adds resistance and worsens voltage sag under load.