Fujitsu users no longer worry about battery life! The 2025 FPB0340S battery has become a “life-saving artifact” for LifeBook U937 and U938. Tests show that office battery life increases by 35% after replacement, and crucially, it’s only $37.5，offering unbeatable value.
Its core advantage lies in the dual-version design. The 50Wh high-capacity model uses a 4-cell lithium structure, maintaining 14.1V voltage while weighing just 0.4kg—no extra bulk for thin laptops. In real-world business tests: leaving home at 8 AM with 3 hours of documents, 2 hours of video conferences, and 2 hours of web browsing, it still had 23% power at 6 PM, with 11.2 hours enough for a full workday. The 46.7Wh standard version also performs well, meeting 8-hour office needs.
Compatibility and durability hit the pain points of old users. It perfectly matches Fujitsu’s original power system—no debugging needed after replacement to activate smart power-saving mode, with no error pop-ups. With 800 charge cycles, it retains over 65% capacity after 3 years of daily charging, lasting 1 year longer than ordinary third-party batteries.
Compared to original batteries, its cost-effectiveness is unmatched. The original same-capacity battery costs over ¥300, but FPB0340S is half the price with 35% longer life. Many users reported: “My old U937 went from 4-hour to 10-hour battery life, saving money on a new laptop.”
Ideal for business travelers and office users upgrading old Fujitsu laptops.