About this replacement
Dell Inspiron 13 5310 / 14 5410 Series — 15V Li-Polymer Replacement Battery (V6W33)
This is a 15V, 3500mAh (52.5Wh) Li-Polymer battery for the Dell Inspiron 13 5310, Inspiron 14 5410, Inspiron 14 5410 2-in-1, Inspiron 14 5418, and 19 additional Inspiron variants. It replaces OEM part numbers V6W33, WV3K8, VKYJX, MVK11, XDY9K, PG8YJ, 927N5, FH3K2, and MGCM5. If the original cell has degraded and no longer holds a useful charge away from AC power, this is the direct cell swap.
- Inspiron 5310 / 5410 platform fitment: These models share the same 15V battery rail, physical connector, and BMS handshake protocol across the Inspiron 5000 thin-and-light chassis. The same cell pack covers both standard clamshell and 2-in-1 variants because Dell kept the battery specification consistent across that chassis generation.
- Bench tested on actual hardware: We ran this cell on an Inspiron 5410 unit. The BMS completed the handshake with the EC firmware on first boot, charge current ramped correctly through CC to CV phase, and the BIOS battery status cleared the "plugged in, not charging" flag without intervention.
- Post-install discharge cycle on Dell firmware: After fitting this cell, run one full discharge to hibernate cutoff, then charge uninterrupted to 100% without putting the laptop to sleep mid-charge. Dell's BIOS battery learn cycle resets against the new cell during that sequence — skipping it leaves the health indicator flagged as poor even when the cell is functioning correctly.
BIOS reporting battery health as "poor" immediately after fitting a new cell
Dell's EC firmware reads health data from EEPROM stored on the original battery pack, not from live cell measurements. When a new cell is installed, that EEPROM data is absent or mismatched, so the BIOS flags the battery as degraded before it has run a single cycle. This is a firmware state, not a hardware fault. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% — after that cycle completes, the BIOS recalibrates and the health warning clears.
Inspiron shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The IC is still referencing the old cell's discharge profile, so it misreads the remaining capacity and triggers a shutdown before the cell is actually exhausted. It is not a fault with the replacement cell. Run two to three full discharge-and-charge cycles and the fuel gauge recalibrates — shutdowns should stop occurring above approximately 10% once calibration is complete.