About this replacement
Samsung Galaxy Mini 2 GT-S6500 Series — 3.7V Li-ion Replacement Battery (EB464358VU)
This 3.7V, 2400mAh Li-ion cell replaces the original EB464358VU battery in the Samsung Galaxy Mini 2 and related GT-S6500 variants. It fits the GT-S6500, GT-S6500D, GT-S6500L, and compatible models sharing the same battery bay and connector. Capacity figure comes from the product data — 8.88Wh.
- GT-S6500 series compatibility: The GT-S6500, GT-S6500D, and GT-S6500L all draw from the same 3.7V battery rail, use the same physical connector, and accept the same BMS handshake. One cell covers the whole variant group.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the GT-S6500 platform. The BMS accepted the cell without flag errors, and charge termination triggered correctly at 4.2V.
- Fuel gauge recalibration after swap: On first installation, run one complete discharge down to auto-shutdown, then charge uninterrupted to 100%. This gives the phone's coulomb counter a full reference curve against the new cell before the OS starts reporting percentage.
Why the GT-S6500 reports wrong battery percentage after a cell swap
The Galaxy Mini 2 uses a coulomb counter that builds its percentage model against the discharge curve of whichever cell it last fully cycled. When you install a fresh cell, that curve no longer matches. The OS pulls percentage from a stale model, so the readout drifts — often showing 60% one minute and jumping to 40% the next. One full discharge-to-shutdown followed by a complete charge cycle resets the counter against the new cell. After that single cycle, percentage tracking stabilises.
Sudden shutdown at 20–25% on the replacement cell
This happens when the cell voltage drops faster than the fuel gauge predicts under modem or screen load. The GT-S6500's processor and radio draw short current spikes that pull cell voltage below the BMS cutoff threshold before the percentage display reaches zero. The phone shuts down cleanly — this is the BMS protecting the cell, not a fault. Check the open-circuit voltage after shutdown with a multimeter; a reading above 3.5V confirms the cell is healthy and the fuel gauge simply needs one full recalibration cycle to map the correct voltage cliff point.