Micromax Canvas 3D A115 Replacement Battery 3.7V 2000mAh

Micromax Canvas 3D A115 / Canvas HD A116 — 3.7V Li-ion Replacement Battery

This is a 3.7V, 2000mAh Li-ion cell for the Micromax Canvas 3D A115, Canvas HD A116, Canvas 4 A210, A117, and seven additional Canvas-series Android smartphones. It replaces the original battery when the cell loses capacity, swells, or stops holding a charge. Voltage and physical dimensions — 70.00 × 59.90 × 4.40mm — match the stock cell.

• Canvas-series shared platform: These models run on a common Mediatek board layout that shares the same battery connector pitch and BMS handshake voltage thresholds. That is why one cell covers the full Canvas range without modification.
• Bench tested on actual hardware: We cycled this cell on a Canvas HD A116 unit. The BMS accepted the charge handshake on the first cycle, and the fuel gauge IC tracked discharge without a false cutoff.
• Fuel gauge recalibration on first install: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high current is pushed into an uncalibrated cell.

Sudden shutdown at 20–30% on the Canvas series after a cell swap

The Canvas-series fuel gauge IC stores a learned discharge curve from the old cell. When a new cell is installed, the IC applies the old curve to a cell with different impedance characteristics. Under modem load or screen-on draw, the new cell's voltage drops faster than the IC predicts, triggering an emergency cutoff before the OS can warn the user. Run two full discharge-charge cycles without interruption to overwrite the stored curve. After the second cycle, the IC recalibrates and the 20–30% shutoff stops.

Phone reports wrong battery percentage after replacing the cell

This happens because the coulomb counter inside the phone retains data from the previous cell and maps capacity readings to an outdated baseline. The result is percentage jumps, a stuck reading, or a rapid drop from 50% to zero. Drain the battery completely until the phone shuts off on its own, then charge uninterrupted to 100% without removing the cable. One full cycle is usually enough to re-anchor the coulomb counter to the new cell's actual capacity floor and ceiling.