POWER-FENG 45Wh C31N1411 Battery for Asus Zenbook U305 U305F U305FA U305CA

Direct Replacement for C31N1411

This 45Wh lithium-polymer battery replaces the original C31N1411 unit in compatible Asus Zenbook models. It delivers 11.4V and 3830mAh in a black housing. The part fits U305F, U305FA, U305CA, UX305F, UX305CA and UX305FA ultrabooks. Buyers needing a different voltage or connector layout should verify their existing part number first.

Steady Output Through a Full Cycle

The 45Wh capacity is rated for continuous discharge rather than a brief peak, so the ultrabook runs at its normal workload until the cell reaches its low-voltage threshold. Li-polymer chemistry maintains a stable 11.4V curve across the cycle, avoiding the voltage sag that can trigger early shutdowns. No active cooling or firmware calibration is required beyond the standard OS battery gauge.

Upgrade From a Depleted Original Cell

This unit replaces a factory battery that no longer holds a useful charge after hundreds of cycles. The jump is worth it when the laptop cannot complete a typical work session unplugged or when the system throttles due to low voltage. It restores the original runtime envelope without changing the form factor. Users whose chassis or connector differs from the listed models cannot use this pack.