About this replacement
Motorola Moto G60s (XT2133) — 3.87V Li-Polymer Replacement Battery (LK50)
This 3.87V, 4800mAh Li-Polymer battery replaces the original LK50 cell in the Motorola Moto G60s smartphone, covering model numbers XT2133-1 and XT2133-2. It fits the 2021 production run of the G60s. Swap it when the original cell no longer holds a charge through a full day of use.
- XT2133-1 and XT2133-2 compatibility: Both variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — the LK50 cell works across the full XT2133 lineup without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on an XT2133-2 unit. The BMS accepted the cell without error flags, and the charge IC ramped to full current within the first cycle.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging is introduced.
Sudden shutdown at 20–30% on the G60s after a cell swap
The G60s uses a coulomb-counter fuel gauge IC that was calibrated to the old cell's internal resistance profile. A new cell with lower impedance hits a voltage cliff at a different state-of-charge point than the IC expects. When the modem transmits or the display peaks brightness, current draw spikes and cell voltage drops below the BMS cutoff threshold — even though the reported percentage still shows 20–30%. One full slow-charge cycle resets the counter baseline and the shutdowns stop.
USB-PD fast charge not working after replacement
On a fresh cell, the BMS sometimes refuses the fast-charge handshake on the first connection because it has no charge history to reference. The G60s charge IC defaults to trickle rate until it completes one standard-rate cycle. Plug into a 5V/1A charger — not the fast charger — and let it charge to 100% uninterrupted. After that cycle, the BMS accepts the fast-charge protocol at the correct voltage step.