ZTE Blade 3.7V 1300mAh Compatible Battery Li-ion

Bouygues Blade — 3.7V Li-ion 1300mAh Replacement Battery

This is a 3.7V 1300mAh Li-ion replacement battery for the Bouygues Blade smartphone. It slots into the original battery bay and reconnects the device to its charge circuit and fuel gauge IC. Dimensions are 43.50 × 47.00 × 6.10mm — measure your original cell before ordering if you are unsure of your exact Blade revision.

• Bouygues Blade compatibility: The Blade line shares a common 3.7V single-cell architecture with a direct connector to the motherboard's power management IC. Voltage rail and physical footprint match the original cell specification.
• Bench tested on actual hardware: We ran charge-discharge cycles on this cell and monitored BMS cutoff thresholds. The protection circuit tripped correctly at the low-voltage floor, and the charge IC accepted current without false-positive overtemp flags.
• 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 recalibrate against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the replacement cell

This is the most reported issue after a cell swap on budget Android smartphones like the Blade. The fuel gauge IC is still running the discharge curve it mapped to the old, degraded cell. When the new cell hits a voltage point the IC associates with deep discharge, it triggers a shutdown — even though real capacity remains. One full discharge-charge cycle without fast charging forces the coulomb counter to remap against the new cell. After that cycle, shutdowns at 20–30% typically stop.

Phone not powering on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If this battery dropped below approximately 2.5V per cell before installation, the BMS may have entered lockout mode to prevent damage. Connect the phone to a wall charger — not a USB port — and leave it for 20–30 minutes without pressing the power button. The charge IC needs sustained input voltage to push the cell above the BMS re-enable threshold, typically around 2.9–3.0V, before the phone will respond to a power-on attempt.