About this replacement
Iris Ohyama COHC-1300G / DKC-SLDC1 Series — 10.8V Li-ion Replacement Battery (CBL1015)
This is a 10.8V, 2000mAh (21.6Wh) lithium-ion battery for the Iris Ohyama COHC-1300G cordless stick vacuum and related SLDC1-series models. It replaces OEM part numbers CBL1015, CBL1115, and CBL10815. The battery slots into the handle-mount bay and reconnects the vacuum's motor circuit without modification.
- COHC-1300G and SLDC1 platform fit: These models share the same 10.8V motor rail, connector housing, and BMS communication protocol, which is why a single cell covers the full range. The battery management system on each unit expects the same charge curve and cutoff thresholds.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the SLDC1 platform. The BMS accepted the cell without fault codes, held the voltage rail steady through varied load draws, and triggered overcurrent cutoff at the correct threshold during simulated blockage tests.
- Dock charging on stick vacuums: Do not leave this vacuum sitting on the charging dock continuously. Stick vacuums on permanent dock charge receive a sustained trickle that degrades cell capacity faster than intermittent charge cycles. Charge to full, then remove from the dock.
Suction dropping before the battery indicator shows low
This happens when the motor draws more current than the cell can supply cleanly — typically caused by a partially blocked filter rather than a weak battery. Restricted airflow forces the motor to work harder, pulling higher current and causing voltage to sag early. The BMS reads that sag and reduces output before the fuel gauge registers a low state. Clean or replace the filter first, then test suction again.
Motor cuts out mid-clean then comes back after a short pause
This is a BMS overcurrent trip, not a dead battery. When suction is restricted — by a blocked filter, a clogged nozzle, or dense carpet fibres — the motor spikes its current draw above the BMS cutoff threshold. The BMS shuts the circuit to protect the cell, then resets after a few seconds of cooling. Clear the blockage, check the filter condition, and confirm the nozzle is unobstructed before resuming. If the cutout persists on an unblocked machine, check that the battery is seated fully and the contacts are clean.