LG X Cam Replacement Battery BL-T23 3.85V 2500mAh

LG X Cam / K580 Series — 3.85V Li-Polymer Replacement Battery (BL-T23)

This 3.85V, 2500mAh Li-Polymer battery replaces part number BL-T23 (also listed as EAC63278801) in the LG X Cam, X Cam 4G, K580, and K580H smartphones. It matches the original cell dimensions at 100.45 × 43.95 × 3.60mm and slots into the same battery bay without modification. Voltage and connector pinout match the OEM specification exactly.

• X Cam and K580 platform fit: The X Cam, X Cam 4G, K580, and K580H share the same battery bay geometry, BMS handshake protocol, and 3.85V nominal voltage rail — which is why BL-T23 covers all of them from a single cell design.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the K580 platform. The BMS accepted the cell without fault codes, and charge termination triggered correctly at 4.35V. Capacity read-back at cycle one came in at 2500mAh within normal tolerance.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle before enabling it again. This gives the phone's fuel gauge IC time to map the new cell's discharge curve before high-current charging begins on an uncalibrated cell.

Sudden shutdown at 20–30% on the X Cam after a cell swap

This is a voltage cliff issue, not a capacity problem. When the X Cam's modem fires or the dual-camera system activates, current draw spikes sharply. If the fuel gauge IC is still calibrated to the old cell's discharge curve, it misjudges the new cell's actual state of charge. The phone reads 25% but the cell voltage drops below the BMS cutoff threshold under load — and the device shuts off. One full discharge-charge cycle at standard charging speed resets the coulomb counter and eliminates the false cutoff.

X Cam not powering on after the replacement battery sat in storage

Li-Polymer cells self-discharge in storage. If the replacement cell dropped below 2.5V per cell before installation, the BMS enters lockout mode and blocks charge input to prevent damage to the degraded cell. The phone will show no response on the charger and no boot screen. Connect to a wall charger — not a PC USB port — for at least 30 minutes without interruption. Most BMS units begin trickle-charge recovery above 2.5V and the phone will show a charging indicator before the cell reaches enough voltage to boot.