Shark UV615 Replacement Battery 7.2V 1500mAh XBP615

Shark UV615 Series — 7.2V Ni-MH Replacement Battery (XBP615)

This is a 7.2V, 1500mAh Ni-MH replacement battery for the Shark UV615 handheld UV sanitizing vacuum. It fits the UV615, UV615H, UV615K, and UV627 models. OEM part numbers XBP615 and EU-36040 both cross-reference to this cell pack.

• UV615 and UV627 compatibility: These models share the same 7.2V battery rail, connector housing, and BMS handshake protocol. The UV615H and UV615K are regional variants with identical internal battery bay dimensions and the same charge management expectations — one battery fits all four.
• Bench tested on actual hardware: We ran the pack through the UV615's charge cycle and monitored BMS cutoff on both the charge and discharge sides. The protection circuit tripped correctly at the rated low-voltage threshold, and the charger handshake completed without fault codes on the LED indicator.
• Dock charging discipline for Ni-MH cells: Ni-MH chemistry does not tolerate continuous trickle charging the way some lithium packs do. Once the UV615 shows a full charge, remove it from the dock. Leaving it docked permanently accelerates capacity fade in Ni-MH cells faster than in any other common battery chemistry.

Suction dropping before the battery indicator reaches low

This is a voltage sag issue, not a capacity issue. When the UV615 motor draws current against a restriction — a clogged filter or a blocked nozzle — the internal resistance of a degraded Ni-MH pack causes voltage to sag below what the motor controller expects. The motor slows before the battery indicator has moved. A fresh cell with lower internal resistance holds voltage under load, which restores suction at the same charge level. Check the filter first, then test suction again.

Motor cuts out mid-use then comes back after a few seconds

This is a BMS overcurrent trip, not a motor fault. When suction is restricted — usually a saturated filter or a hair blockage at the nozzle — the motor draws sustained current above the battery's rated threshold. The BMS disconnects the cell to protect it, then resets after a brief cooldown. Clearing the blockage stops the trip from recurring. If the motor still cuts out on a clean filter, measure pack voltage under load — a healthy cell holds above 6.0V during operation.