Manta TEL1711 Replacement Battery 3.7V 1200mAh Li-ion

Manta TEL1711 / TEL1713 / MS1701 / TEL1800 — 3.7V Li-ion Replacement Battery

This is a 3.7V, 1200mAh (4.44Wh) Li-ion cell for Manta smartphones including the TEL1711, TEL1713, MS1701, and TEL1800. It replaces a degraded or failed original cell in budget-tier Manta handsets where the manufacturer no longer supplies parts. Physical dimensions are 53.00 × 33.90 × 5.70mm — measure your original before fitting.

• Multi-model fit across the Manta lineup: These handsets share a common PCB layout and battery bay spec, so the same cell voltage, connector pitch, and BMS communication protocol carries across TEL1711, TEL1713, MS1701, and TEL1800 variants without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the bench. The BMS accepted charge handshake correctly, held voltage at load, and cut off cleanly at the low-voltage threshold — no forced shutdowns during the test sequence.
• Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before the phone trusts the percentage readings it reports.

Sudden shutdown at 20–30% on the Manta TEL1711 after a cell swap

This is a voltage cliff issue, not a capacity fault. Budget-tier Li-ion cells have a steeper discharge curve in the lower state-of-charge range. When the modem fires a transmission burst or the screen brightness spikes, internal resistance causes a momentary voltage drop that crosses the BMS cutoff threshold — even though the fuel gauge still reads 25%. One full discharge-charge cycle lets the fuel gauge IC recalibrate its model against the new cell, and the shutdowns typically stop after that first cycle.

Phone warm near the battery bay during the first few charges

A new Li-ion cell has slightly higher internal impedance than a broken-in one. During the first two or three charge cycles, the charge IC pushes current into higher impedance, which generates more heat than you'd see on a settled cell. This is normal and reduces as the cell cycles. If warmth continues past the third full charge or the phone becomes hot to the touch, check that the charge IC is not stuck in a fast-charge mode — drop to a standard 5V/1A charger and run one cycle at that rate.