Motorola QA30 Replacement Battery BN60 3.7V 930mAh

Motorola QA30 / Hint QA30 — 3.7V Li-ion Replacement Battery (BN60 / SNN5833)

This is a 3.7V 930mAh Li-ion cell that replaces the original battery in the Motorola QA30 and Hint QA30 smartphones, along with the Eco A45, I856 Debut, and several other models sharing the same BN60 / SNN5833 battery footprint. It restores charge retention when the original cell has aged past useful capacity. Dimensions are 46.24 × 33.89 × 5.06mm — verify against your existing cell before installing.

• QA30 / Hint QA30 platform fit: The QA30 and Hint QA30 share the same battery bay geometry and connector pinout, which is why Motorola used one part number — BN60 — across both handsets. The SNN5833, SNN5833A, SNN5838, BN10, and BN61 callouts are regional or revision-specific part numbers for the same physical cell.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a QA30 unit and confirmed the BMS handshake completed normally — the phone accepted the cell, reported voltage, and entered charge termination cleanly at full capacity. No cutoff faults were triggered during the test cycle.
• Fuel gauge recalibration on first use: On the first full cycle after installation, disable any fast-charge mode if your charger supports it. Run the battery down to automatic shutdown, then charge uninterrupted to 100%. This gives the fuel gauge IC one clean reference cycle against the new cell's actual discharge curve before high-current charging is applied.

Why the QA30 reports wrong battery percentage after a cell swap

The QA30's fuel gauge IC builds its capacity model by tracking coulombs in and out of the original cell over many cycles. When a new cell goes in, that learned model no longer matches the actual cell chemistry — so the reported percentage can read 20% high or low until the IC relearns. The fix is one complete uninterrupted discharge-to-shutdown followed by a full charge with the screen off. After that single cycle the IC resets its reference points against the new cell. Reported percentage stabilises within two or three cycles from that point.

Sudden shutdown at 20–25% on the replacement cell

This happens when the cell voltage drops below the modem or display load threshold before the fuel gauge registers empty — a voltage cliff the old cell didn't have because it was being read against a worn discharge curve. The new cell holds nominal voltage longer then drops steeply; the phone's power IC cuts out before the gauge hits zero. Run two full discharge-recharge cycles without interruption to let the coulomb counter recalibrate. If shutdowns persist past three cycles, check that the battery connector is fully seated — a partially engaged contact raises effective internal resistance and accelerates the voltage drop under load.