High-quality lithium-ion battery for WorldPlus brand notebook PCs, with protection against overvoltage, overcurrent, and more. ■ Voltage: 10.8V, Capacity: 4200mAh, ■ Estimated charging cycles: 500 times. ■ Estimated usage time: Approximately 3 hours. (Charging cycles and usage time may vary depending on the model and usage.) WorldPlus original battery for PC. Remaining battery indicator, rechargeable with the main unit and genuine charger. ◆ Compliant with Japan's unique high safety standards (PSE). ◆ Comprehensive protection features: overcurrent protection, overcharge protection, over-discharge protection, short circuit protection, and more. ◆ Compatible battery model numbers: FMVNBP233, FMVNBP233B ◆ Compatible PC model numbers: FUJITSU LIFEBOOK - AH77/M, AH77/R, AH77/S, WA2/M, WA2/R, WA2/S *Please confirm that both the compatible battery model number and PC model number match before purchasing. - Brand: WorldPlus - Model: FMVNBP233 - Voltage: 10.8V - Capacity: 4200mAh - Output: 45Wh - Protection Features: Overvoltage protection, Overcurrent protection, ESD protection, Overheat protection, Short circuit protection, Overload protection Thank you for viewing.