Kawasaki 840045 19.2V Replacement Battery 2000mAh Ni-MH
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Kawasaki 840045 19.2V Replacement Battery 2000mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
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Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Kawasaki 840045 19.2V Replacement Battery 2000mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
19.2V
Amp
2000mAh
Kawasaki 19.2V Unisource Series — 19.2V Ni-MH Replacement Battery (840045)
This is a 19.2V 2000mAh Ni-MH battery pack for the Kawasaki Unisource cordless tool range. It fits the 19.2V Unisource platform and compatible models including 69007, 691235, and 691306. Voltage and chemistry match the original Kawasaki specification exactly.
- Unisource platform compatibility: These models share the same 19.2V rail, physical pack format, and terminal layout. The battery slides into any Unisource-format tool housing without modification — drills, impact drivers, and saws all draw from the same connection point.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a Kawasaki-compatible 19.2V charger. The BMS held steady through inrush current spikes at trigger pull and recovered cleanly after load drops between cuts.
- Motor-start break-in on first use: On the first two cycles, run the tool at half load — mid-trigger on the drill, light cuts on the saw. This lets the pack's protection circuit log the motor's inrush profile before you hit it with full torque or a sustained saw pass.
BMS cutoff on inrush surge during trigger pull
Kawasaki 19.2V Unisource tools pull a sharp current spike the moment the motor starts — this is normal motor-start inrush. On a depleted or cold pack, that spike can exceed the BMS overcurrent threshold and trip a protection cutout before the motor reaches running speed. The result is a dead stop right at trigger pull, even when the pack shows remaining charge. Warm the pack to room temperature and ensure it is charged above 18V before attempting heavy cuts or high-torque fastening.
Charger not recognising the pack after extended storage
Ni-MH cells self-discharge over time, and after several months in storage this pack can drop below the voltage floor the Kawasaki charger uses to confirm a valid battery is connected. The charger may blink an error or simply do nothing. To recover, check the pack's open-circuit voltage — if it reads below 16V, use a compatible Ni-MH charger with a recovery or trickle mode to bring the cells back above the acceptance threshold before switching to a standard charge cycle.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Kawasaki
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Kawasaki Unisource drill cuts out immediately every time I pull the trigger — why?
That's a BMS overcurrent trip caused by motor-start inrush current. The spike at trigger pull briefly exceeds the pack's protection threshold, and it shuts down before the motor reaches speed. It happens most often when the pack is cold or sitting below half charge. Warm the pack to room temperature and charge it to full — above 19V open-circuit — before running it under load.
The tool bogs and loses torque halfway through a cut even though the battery shows charge — what's happening?
That's voltage sag under sustained load. As current demand rises during a long drill pass or saw cut, internal resistance in the cells causes the voltage rail to drop, and the tool loses torque before the pack is actually empty. Check the terminal contacts on both the pack and the tool for corrosion or debris — poor contact resistance makes sag significantly worse. Clean the contacts with a dry cloth and reseat the pack firmly before retesting.
After leaving my Kawasaki battery in the garage all winter, the charger won't recognise it — how do I get it charging again?
Ni-MH cells self-discharge during storage, and after a cold winter the pack voltage can fall below the charger's minimum acceptance level — typically around 16V for this platform. A standard charger will not initiate a charge cycle on a pack that reads below that threshold. Use a Ni-MH charger with a trickle or recovery mode to slowly bring the cell voltage back up, then transfer to your normal Kawasaki charger once the pack reads above 16V.
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