About this replacement
Black & Decker KC1882FK Series — 18V Ni-MH Replacement Battery (PS145)
This is an 18V Ni-MH replacement battery rated at 3300mAh (59.4Wh) for the Black & Decker KC1882FK cordless drill-driver and related KC1882 variants. It fits the KC1882F, KC1882CN, KC1882C, and several additional models that share the same battery platform. OEM part numbers PS145, A9268, A9277, and A9282 all cross to this pack.
- KC1882 platform compatibility: These KC1882 models share an 18V power rail and the same slide-in connector geometry. The BMS in each uses the same communication protocol, so this pack seats and handshakes the same way the original did — no adapter or modification needed.
- Bench tested on actual hardware: We cycled this pack through repeated trigger-pull sequences on a KC1882-class drill. The BMS tracked inrush current on each motor start without tripping. Cell voltage held stable across fastening and boring loads at full torque.
- Ni-MH break-in on first use: On first use, run the drill at half load — mid-depth screws, not lag bolts — for two full cycles before maximum torque applications. This lets the BMS profile the motor's inrush draw and calibrate its overcurrent thresholds before you hit peak demand.
BMS cutoff on KC1882FK motor-start inrush surge
Every trigger pull on a cordless drill sends a brief inrush spike before the motor reaches running speed. On an 18V Ni-MH pack, that spike can briefly exceed the BMS overcurrent threshold — especially when the pack is cold or the cells haven't been profiled yet. The BMS responds by cutting power to protect the cells, which looks like the drill shutting off immediately on trigger pull. Running the pack through two lighter-load cycles before full torque work gives the BMS enough current history to set an accurate trip threshold.
Charger not recognising a new KC1882 pack after storage
Ni-MH packs self-discharge during storage, and if cell voltage drops below roughly 1.0V per cell, most chargers refuse to enter charge mode — they read the pack as faulty. You'll see a blinking or solid red indicator with no progression. The fix is to briefly connect the pack to the tool and pull the trigger a few times — this draws enough current to confirm cell integrity to the charger. Reconnect to the charger; it should accept the pack and begin charging within 30 seconds.