PA5076U-1BRS 14.8V 45Wh Replacement Battery for Toshiba Satellite U940 L950 L955 Series — Factory-Direct Wholesale Supply

Q1: The Satellite U940 shows “plugged in, not charging” immediately after installing a replacement battery. Is this a BMS firmware issue or an EC configuration problem?

A1: On the Toshiba U940 platform, the embedded controller reads the battery’s chemistry ID byte and design capacity value from the BMS EEPROM during the first charge negotiation cycle. If a replacement pack carries the wrong capacity register — commonly seen when generic packs ship with a default 4400mAh or uninitialized value — the EC flags the pack as non-compliant and parks the charger circuit in a standby state, producing the “plugged in, not charging” symptom. Our PA5076U-1BRS replacement is flashed with the 45Wh design capacity register and the correct Toshiba chemistry identifier before assembly is completed. If the symptom persists after installation, perform a hard shutdown (hold power button 15 seconds with AC connected, battery disconnected), then reconnect the battery and cold-boot. This forces the EC to re-query the pack and initialize the charge cycle cleanly.

Q2: Will the Windows 10/11 battery health report show accurate design capacity and cycle count data with this replacement?

A2: Yes. Windows reads battery design capacity, full-charge capacity, and cycle count directly from the BMS via the Smart Battery System (SBS) protocol over the SMBus line. Our BMS firmware responds to all standard SBS commands — 0x18 (DesignCapacity), 0x17 (CycleCount), 0x09 (Temperature) — with correctly initialized values. After installation, run powercfg /informe de batería from an elevated command prompt; the Design Capacity field should read approximately 45,000 mWh (or 2770 mAh at 14.8V), confirming the BMS is communicating correctly with the OS.

Q3: What is the minimum order quantity for repair shop accounts, and can we combine this SKU with other Toshiba part numbers on one purchase order?

A3: The floor for wholesale pricing on the PA5076U-1BRS is 20 units. Repair center accounts frequently combine this reference with other active Toshiba Satellite SKUs — for example, PA3817U-1BRS or PA5024U-1BRS — on a single purchase order. Mixed-SKU consolidation applies: the 20-unit threshold counts across the combined line items, not per individual part number. This is particularly useful for shops maintaining a multi-model Toshiba service inventory without needing to commit a full minimum to a single slower-moving reference. Contact the wholesale desk for a tiered price schedule and current lead times.

Q4: The original battery on the Satellite L950 was slightly swollen — will the replacement fit the chassis without modification, and is there a connector cable length concern?

A4: The PA5076U-1BRS uses the same 5-pin connector geometry and cable routing as the original Toshiba pack. Dimensional tolerance on the cell chassis is held to ±0.3mm across the six outer faces, which keeps the fit within the L950’s battery bay clearance without requiring any tab modification or forced seating. One practical note for technicians: on the L950 and L955, the battery bay retaining clips are prone to micro-fracture on units where swelling has occurred. Before fitting the replacement, verify the plastic clip tabs are fully intact — a cracked clip can cause intermittent seating contact that mimics a battery fault. The replacement pack itself requires no modification; shell-to-bay fit is direct.

Q5: How should we store PA5076U-1BRS units in warehouse inventory before deployment, and what is the maximum recommended storage period?

A5: Units ship at 40–50% state of charge, which is the chemically stable storage window for the Li-ion cells used in this pack. For warehouse storage, maintain the environment at 10–25°C with relative humidity below 65% and no direct UV exposure. At this SOC and temperature range, cell self-discharge is approximately 2–3% per month. Units stored for up to 12 months under these conditions will arrive at the technician’s bench with sufficient residual charge for an immediate installation and health check. For stock held beyond 6 months, a partial top-up to 50% SOC before dispatch is advisable to compensate for self-discharge losses.

Q6: What UN38.3 documentation is available for air freight shipments, and how are bulk orders packaged for compliance?

A6: UN38.3 test summary reports and the accompanying MSDS are available as PDF downloads for inclusion in your freight documentation package — request these through the wholesale portal at the time of order. For air shipment, individual units are shipped at ≤30% SOC per IATA PI 965/966 requirements (Section II quantities per outer packaging). Bulk pallet orders are configured with inner-box quantities and outer carton labeling meeting Class 9 / UN3481 requirements. If your freight forwarder requires a specific IATA Shipper’s Declaration format or a Dangerous Goods declaration addendum, supply their template at order time and our compliance team will complete it against the verified UN38.3 test data for this pack.