About this replacement
Samsung P35 XVM 1600 II — 14.8V Li-ion Replacement Battery (SSB-P30LS)
This is a 14.8V 4400mAh (65.12Wh) Li-ion battery for the Samsung P35 XVM 1600 II and related P35/P30 series notebooks. It replaces OEM part numbers SSB-P30LS, SSB-P30LS/C, SSB-P30LS/E, and SSB-P30LS12/E. The battery slots into the standard P35/P30 bay and connects via the original multi-pin connector.
- P35 and P30 series fit: The P35, P35-5R2, P30 XVM 1500, and over 20 additional Samsung models in this lineup share the same 14.8V four-cell architecture and identical connector pinout. The BMS handshake uses the same SMBus protocol across the full range, so one cell works across all those configurations.
- Bench tested on actual hardware: We cycled this cell on a P35 platform and confirmed the BMS completes charge negotiation without fault codes. The protection circuit trips correctly at low-voltage cutoff and resets cleanly on reconnect.
- First-cycle calibration on the P35: After fitting this battery, run the laptop on battery alone until it hibernates at low charge, then charge uninterrupted to 100% without interruption. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting poor battery health immediately after fitting a new cell
The Samsung P35 BIOS reads health data from EEPROM registers embedded in the battery pack — not from live cell voltage. When a new cell is fitted, those registers still carry the degraded values written by the old pack. The BIOS flags the battery as poor or unknown because it is comparing the new cell against stale cycle-count and full-charge-capacity data. Running one complete discharge-to-hibernate followed by a full uninterrupted charge overwrites those registers with accurate values from the new chemistry. After that cycle, the health indicator should clear and report correctly.
Laptop shutting down at 20–30% charge shown on the P35
This is a voltage-cliff failure — not a gauge error. Under combined CPU and display load, cell voltage drops faster than the fuel gauge IC can track, and the pack hits the BMS low-voltage cutoff before the OS percentage reaches zero. The gauge IC needs two or three full calibration cycles against the new cell before its discharge curve model becomes accurate. Run three complete discharge-to-cutoff and full-charge cycles, and the reported percentage at shutdown should converge to below 5%.