Black&Decker V3610 Replacement Battery 3.6V 3000mAh Ni-MH

Black&Decker V3610 Series — 3.6V Ni-MH Replacement Battery (5100363-03)

This is a 3.6V, 3000mAh Ni-MH replacement battery for the Black&Decker V3610, V3600, V3610V, and V3610P cordless handheld and stick vacuums. It replaces OEM part number 5100363-03 directly. When the original cell loses capacity or refuses to hold a charge, this swap restores full motor voltage to the cleaning head.

• V3610 series compatibility: The V3610, V3600, V3610V, and V3610P share the same 3.6V single-cell architecture and connector pinout. All four models draw from the same battery bay, so one cell fits the group without modification.
• Bench tested on actual hardware: We cycled this cell through the V3610 charger circuit and confirmed the BMS handshake completes correctly. The charger reached cutoff at full capacity without triggering a fault condition or premature termination.
• Dock charging on cordless vacuums: Do not leave the vacuum sitting on the charging dock between uses. Continuous trickle charge on Ni-MH cells accelerates capacity fade faster than normal cycle wear. Charge to full, then remove from the dock until the next use.

Suction dropping before the battery indicator reaches low

On the V3610, motor voltage sag shows up as reduced suction well before the battery is actually depleted. This happens when the filter is partially blocked — the motor works harder to pull air, draws more current, and the cell voltage drops under load. The vacuum reads as low-power before the cell is genuinely empty. Clean or replace the filter first, then test suction at full charge to separate a battery fault from a filter restriction.

Motor cutting out mid-use then recovering after a pause

This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked nozzle, clogged filter, or hair wrapped around the intake — the motor current spikes past the cell's protection threshold and the BMS disconnects the circuit. Waiting a moment lets the BMS reset and the motor runs again. Clear the blockage completely before the next run, or the trip cycle repeats and shortens cell life. If the motor cuts out on a clean filter with no obstruction, check that cell voltage under load stays above 3.0V.