LG V30 BL-T34 Replacement Battery 3.85V 3200mAh

LG V30 / V30S Series — 3.85V Li-Polymer Replacement Battery (BL-T34)

The BL-T34 is a 3200mAh, 3.85V Li-Polymer cell that fits the LG V30, V30S, H930, H930G, and over 30 additional H-series variants. It replaces a degraded or failed original cell when the phone no longer holds a usable charge through a normal day. Capacity figure is 12.32Wh at nominal voltage.

• V30 and V30S series compatibility: These models share the same battery bay dimensions, 3.85V charging rail, and BL-T34 connector pinout. The BMS handshake protocol is identical across the H930 and H930G variants, so the fuel gauge IC reads cell state correctly from first boot without any firmware differences.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on an H930 unit. The BMS accepted charging current without tripping, voltage held steady under sustained screen and modem load, and the charge IC reported state-of-charge without fault flags in the battery stats log.
• Fuel gauge recalibration on first use: On the first use after installation, disable fast charging and let the phone complete one full discharge-to-charge cycle on standard 5V input. This gives the coulomb counter a clean reference curve for the new cell before high-current fast charging pushes variable current into an uncalibrated state-of-charge model.

Sudden shutdown at 20–30% on the BL-T34 replacement cell

The LG V30 fuel gauge IC retains the discharge curve from the old, degraded cell in its coulomb counter. When a new cell is installed, the reported percentage does not match the actual cell voltage. At around 3.6V the new cell still has capacity, but the fuel gauge triggers a low-voltage cutoff because it expects a worn cell to be near empty at that point. One full slow-charge cycle forces the IC to relearn the new cell's voltage-to-capacity mapping and eliminates premature shutdowns.

USB-PD fast charge not accepted on the first cycle after replacement

On a freshly installed cell, the BMS may not complete the handshake required for the V30's Qualcomm Quick Charge protocol on the first charge attempt. The charge IC defaults to standard 5V/1A until it confirms cell impedance is within the expected range for high-current delivery. Plug into a standard 5V charger, let the phone reach 100%, then unplug and restart. On the next charge attempt with a Quick Charge adapter, the BMS handshake completes and fast charging activates normally.