Micromax A116 Canvas HD Compatible Battery 3.7V 1700mAh

Micromax A116 Canvas HD — 3.7V Li-ion Replacement Battery

This is a 3.7V, 1700mAh Li-ion replacement battery for the Micromax A116 Canvas HD smartphone. It slots into the rear battery bay of the A116 and connects to the same three-contact board connector as the factory cell. Dimensions are 69.88 × 59.87 × 4.60mm — confirm these against your existing cell before ordering.

• A116 Canvas HD fit: The Canvas HD uses a removable rear-cover design with a dedicated battery bay sized to this cell's footprint. The BMS communicates state-of-charge data to the OS through the three-contact connector — voltage, temperature, and ID line all pass through the same point.
• Bench tested on actual hardware: We ran charge-discharge cycles on the A116 board and confirmed the BMS accepted the cell, completed a full CC-CV charge cycle, and passed temperature readings to the OS without fault flags.
• Fuel gauge recalibration on first use: On first use after installation, complete one full discharge-to-charge cycle without interruption. This lets the fuel gauge IC map the new cell's discharge curve before the OS starts reading percentage from it — skipping this step causes erratic percentage display for several days.

Why the A116 Canvas HD reports wrong battery percentage after a cell swap

The A116 uses a fuel gauge IC that stores the previous cell's discharge curve in memory. When a new cell goes in, the IC still references the old curve until it runs a full calibration cycle. This mismatch causes the percentage reading to lag, jump, or plateau — the cell voltage is accurate, but the displayed figure is not. One full uninterrupted discharge followed by a complete charge to 4.2V resets the learned curve and restores accurate percentage display.

Sudden shutdown at 20–30% on the replacement cell

This happens when the fuel gauge IC hasn't calibrated yet and the cell hits a voltage cliff under load — typically during mobile data, screen-on, or a call. The OS sees 25% but the cell voltage drops below the BMS cutoff threshold under that current draw. The BMS trips and the phone shuts off to protect the cell. Run two full discharge-charge cycles and the fuel gauge will track voltage sag more accurately, pushing the shutdown trigger down to the correct low-voltage floor near 3.2V.