Dell Chromebook 3110 Compatible Battery 11.4V 3400mAh

Dell Chromebook 3110 / 3110 2-in-1 — 11.4V Li-Polymer Replacement Battery (0YKG3C)

This is an 11.4V, 3400mAh (38.76Wh) lithium-polymer replacement battery for the Dell Chromebook 3110 and Chromebook 3110 2-in-1. It replaces OEM part numbers 0YKG3C, RF9H3, and YKG3C. If your Chromebook no longer holds charge or shuts down unexpectedly, this cell slots directly into either chassis variant.

• Chromebook 3110 and 3110 2-in-1 compatibility: Both the clamshell and 2-in-1 variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — that is why a single part number covers both. The 11.4V three-cell configuration matches the voltage rail the EC firmware expects on boot.
• Bench tested on actual hardware: We cycled this cell through a full charge-discharge sequence on a Chromebook 3110 unit. The BMS handshook correctly on first connection, charge current ramped to CC phase without fault codes, and the EC reported capacity within normal bounds after two calibration cycles.
• Post-install calibration on ChromeOS: After fitting this cell, let the Chromebook discharge fully until it powers off to hibernate, then plug in and charge uninterrupted to 100%. This clears the stale EEPROM data the EC carries over from the old cell and resets the battery learn cycle so the fuel gauge reads accurately from the first full charge onward.

Why the Chromebook 3110 shuts down at 20–30% after a battery swap

The Dell EC uses EEPROM data logged from the previous cell to map voltage curves to state-of-charge percentages. A new cell has a different discharge curve, so the EC misreads the remaining capacity and triggers a low-battery shutdown well before the cell is actually empty. This is not a fault with the replacement cell — it is a calibration mismatch. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%. After those cycles, the fuel gauge IC recalibrates against the new cell's actual voltage curve and the premature shutdowns stop.

BIOS reporting battery health as "Poor" or "Unknown" after fitting this cell

Dell's battery health check reads the wear-level and cycle-count fields stored in the old cell's EEPROM. When a new cell is installed, those fields are either zeroed or carry factory defaults, which the BIOS interprets as a degraded or unrecognised battery. The fix is a full learn cycle: discharge to automatic hibernate shutdown, then charge uninterrupted to 100% without using the machine. After one complete cycle the BIOS updates its health register and the "Poor" warning clears. If the warning persists after two cycles, check that the connector is fully seated — a partially connected cell can cause intermittent EEPROM read errors at the firmware level.