About this replacement
Makita 6014DW Series — 9.6V Ni-MH Replacement Battery (192019-4)
This is a 9.6V Ni-MH battery rated at 3000mAh (28.8Wh), built to fit the Makita 6014DW and a broad range of Makita 9.6V cordless drill-drivers. It replaces OEM part numbers including 192019-4, 192321-5, 192404-1, and the 9100 / 9101 / 9102 series packs. The connector and contact plate match the original Makita slide-in format used across this voltage platform.
- 6014DW platform fit: The 6014DW, 6200D, 6201D, and related 9.6V models share the same battery rail voltage, slide-lock connector, and charge termination logic — all confirmed against the 9100A and 9102A OEM footprint.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a 9.6V Makita drill platform. The Ni-MH cells accepted full charge, and the thermal cutoff responded correctly to simulated overload — the pack shut down cleanly and recovered after cooling.
- Motor-inrush break-in on first use: On first use, run the drill at half load for two cycles before applying maximum torque. This lets the battery's overcurrent threshold calibrate against the motor's actual start-up inrush spike — reducing the chance of nuisance trips during heavy fastening.
BMS cutoff on 6014DW motor-start inrush surge
Every time you pull the trigger on a cordless drill, the motor draws a brief current spike — often three to five times the running current — before the shaft starts turning. On Ni-MH packs, the protection circuit reads this inrush as a fault if the cells are cold or the pack is fresh off storage. The BMS trips and the tool goes dead instantly at trigger pull. To clear it, remove the pack, wait 30 seconds, and reinsert before retrying at reduced speed. A full charge cycle before heavy use also raises cell voltage high enough that the BMS sets a more tolerant overcurrent window.
Tool bogs and loses torque mid-fastening
If the drill starts a screw drive and then slows noticeably under load, the cause is almost always voltage sag — the cell voltage drops under sustained current draw, and the tool's motor controller throttles output. On Ni-MH chemistry this gets worse as cells age or if the pack has been shallow-cycled repeatedly without a full discharge. Check the battery rail contacts on both the tool and the pack for oxidation or debris, as contact resistance amplifies sag. If contacts are clean, run the pack through two full discharge-to-charge cycles to allow the cells to balance; resting voltage after charge should read between 10.8V and 11.4V on a multimeter.