About this replacement
Samsung SM-W2014 / SM-G9098 — 3.8V Li-ion Replacement Battery (B190AC)
This is a 3.8V, 1700mAh Li-ion battery replacing part numbers B190AC and B190AE. It fits the Samsung SM-W2014, SM-G9098, SM-G9092, and Uniscope U — all share the same cell footprint and connector. Dimensions are 52.00 × 45.00 × 6.20mm, matching the original cavity exactly.
- SM-W2014 / SM-G9098 compatibility: These models share the same 3.8V voltage rail, physical connector, and BMS handshake protocol. The B190AC part number covers all four fit models — no adapter or modification needed.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on SM-G9098 hardware. The BMS accepted charge without fault codes, and the protection circuit engaged correctly at the low-voltage cutoff threshold.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated cell.
Sudden shutdown at 20–30% on the SM-W2014 after a cell swap
This happens because the fuel gauge IC is still calibrated to the old cell's discharge curve. When the new cell hits a voltage cliff under modem or display load, the IC hasn't learned where that cliff sits yet. The phone reads 25% but the cell voltage has already dropped below the minimum load threshold. One full discharge-charge cycle — without fast charging — resets the coulomb counter and eliminates most of these premature shutdowns.
USB-PD fast charge not accepted on the first cycle after replacement
The charge IC on the SM-W2014 runs an impedance check before it steps up to fast-charge current. A new cell has higher internal impedance than a broken-in one, and the IC can interpret that as a fault condition and drop back to standard 5V charging. This is not a defect — it clears after the first full cycle. If fast charge still doesn't engage after one complete cycle, check that the cable and adapter support the correct USB-PD profile; a standard USB-A cable will lock the charge IC to slow charge regardless of battery condition.