Bralko Galaxy II Cordless Vacuum Replacement Battery 14.4V 2000mAh

Bralko Galaxy II — 14.4V Ni-MH Replacement Battery

This is a 14.4V, 2000mAh Ni-MH replacement battery for the Bralko Galaxy II cordless handheld vacuum. It slots into the Galaxy II to restore cordless cleaning across floors, furniture, and tight spaces. Swap it in when the original pack no longer holds a useful charge.

• Galaxy II compatibility: The Galaxy II runs a 14.4V Ni-MH cell block with a specific connector orientation and BMS handshake. This replacement matches that voltage rail and connector, so the charger and power management circuitry communicate correctly.
• Bench tested on actual hardware: We cycled this pack through the Galaxy II's charge and discharge loop. The BMS accepted the cell, the charger completed a full charge cycle without fault, and the motor drew current within the rated band under load.
• Dock charging habit on the Galaxy II: Do not leave the Galaxy II sitting on the dock permanently between uses. Continuous trickle charging degrades Ni-MH cell capacity faster than storage at room temperature. Charge fully, then remove from the dock until the next clean.

Suction dropping before the battery indicator reaches low on the Galaxy II

The Galaxy II's motor draws harder when airflow is restricted — a partially clogged filter forces the motor to work above its rated draw, which causes voltage to sag under load even when the cell is not depleted. The battery indicator reads cell voltage at rest, not under load, so it can show mid-range while the motor is already starved. Clean or replace the filter before concluding the battery is at fault. After fitting this replacement, check that open-air suction is consistent and that voltage under load stays above 12V.

Motor cutting out mid-clean and recovering after a few seconds

This is a BMS overcurrent trip, not a dead battery. When suction is sustained against a blockage or a heavily restricted filter, current draw spikes beyond the BMS threshold and the pack shuts output. The brief recovery happens once the BMS resets — but the root cause is the restriction, not the cell. Clear any blockage, check the filter, and verify the trip does not repeat in normal open-air use. If the cut-out persists with no restriction present, the replacement pack may have a fault and should be returned.