About this replacement
LG G Flex 2 / H955 / LS996 — 3.8V Li-Polymer Replacement Battery (BL-T16)
This is a 3.8V, 3000mAh (11.4Wh) lithium-polymer replacement battery for the LG G Flex 2 smartphone. It fits the H955, LS996, and H950 model variants, all of which use the OEM part number BL-T16 or EAC62718201. Swap it when the original cell no longer holds a charge or the phone shuts down unexpectedly under load.
- G Flex 2 variant compatibility: The H955, LS996, and H950 share the same curved battery bay geometry and BMS handshake protocol. All require the BL-T16 footprint — 66.04 × 58.36 × 4.95mm — to sit flush against the curved chassis without pressure-warping the display assembly.
- Bench tested on actual hardware: We ran this cell through a full discharge-charge cycle on the H955. The BMS accepted charge handshake on first connection, voltage climbed steadily from resting to 4.35V at full charge, and the protection circuit tripped correctly at low-voltage cutoff without latching.
- Fuel gauge recalibration on first use: After installation, disable fast charging and complete one full discharge-charge cycle before enabling it again. This lets the coulomb counter IC map the new cell's actual discharge curve before high-current charging begins — skipping this step is the main reason the percentage display reads inaccurate after a cell swap.
Sudden shutdown at 20–30% on the G Flex 2 after a cell swap
The G Flex 2's modem and curved OLED panel draw current spikes that expose a fresh cell's uncalibrated voltage floor. The phone's fuel gauge IC still references the old cell's discharge curve, so it thinks 25% remains when the new cell's actual voltage has already dropped below the system's cutoff threshold. The result is an abrupt shutdown with charge still showing on screen. One complete discharge to auto-off followed by a full charge to 100% resets the coulomb counter and eliminates most of these premature cutoffs.
Phone warm near the battery during the first charge cycle
A new lithium-polymer cell has higher internal impedance than a broken-in one, so the charge IC pushes slightly more voltage to maintain the target current rate. That extra conversion loss shows up as warmth around the battery compartment on the first one or two cycles. It is not a fault — impedance drops as the cell conditions. If the phone stays warm beyond the third full charge, measure the back surface temperature near the battery; anything above 40°C at ambient room temperature warrants checking the connection seating.