About this replacement
Dell Latitude 14 9410 2-in-1 — 7.6V Li-Polymer Replacement Battery (02K0CK)
This 7.6V 6800mAh (51.68Wh) lithium-polymer battery replaces the original cell in the Dell Latitude 14 9410 2-in-1 convertible ultrabook. It fits the 9410 2-in-1 lineup including YTK3W, JNMWD, and G8WP0 variants. OEM part numbers covered include 02K0CK, 0C76H7, 0CHWV6, 8W3YY, C7P81, and several others in the same family.
- Latitude 9410 2-in-1 fit range: These models share the same 7.6V power rail, identical physical connector, and a common BMS handshake protocol with the Dell EC. Swapping between 9410 variants listed above does not require any firmware workaround — the EC reads the replacement cell the same way it read the original.
- Bench tested on actual hardware: We ran this cell on a Latitude 9410 2-in-1 under combined CPU load and display-on draw. The BMS held charge acceptance without dropping into fault mode, and the EC registered the cell correctly on first boot without a manual reset.
- Post-install calibration on the 9410 2-in-1: After fitting this cell, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100% without using the machine. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting battery health as poor after replacement on the Latitude 9410
The Latitude 9410's EC carries EEPROM data from the original cell — cycle count, rated Wh, and health score. When a new cell goes in, that stored data does not match the fresh cell's reported state, so the BIOS flags it as degraded. This is a data mismatch, not a fault with the replacement cell. Running the battery learn cycle (full discharge to hibernate, then uninterrupted charge to 100%) prompts the EC to rewrite its EEPROM baseline against the new cell. After one or two completed cycles, the health indicator updates and the warning clears.
Laptop shutting down at 20–30% shown after battery swap
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The IC still uses the old cell's curve, so it misreads the remaining charge and triggers shutdown well before the cell is actually empty. It is not a cell fault. Run two full discharge-and-charge cycles without interrupting either phase — the fuel gauge IC maps the new curve across both cycles. After the second complete cycle, shutdown should not occur until the gauge reads below 5%.