Kraftixx KX-RS 18 Li Solo Replacement Battery 18V 2000mAh
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Kraftixx KX-RS 18 Li Solo Replacement Battery 18V 2000mAh - 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.
Delivery and Shipping
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.
Kraftixx KX-RS 18 Li Solo Replacement Battery 18V 2000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
18V
Amp
2000mAh
Kraftixx KX-RS 18 Li Solo Series — 18V Li-ion Replacement Battery (4514071)
This is an 18V 2000mAh Li-ion battery for Kraftixx 18V cordless power tools. It fits the KX-RS 18 Li Solo, KX-AHS 1858 Li Solo, KX-AKS 1825 Li Solo, KX-ARM 3637 Li, and six additional models in the same voltage platform. Capacity is 2000mAh, delivering 36Wh of stored energy per charge cycle.
- KX-RS 18 Li Solo platform fit: All listed models run the same 18V rail and share an identical battery interface — same connector pitch, same BMS communication protocol, same terminal orientation. Swapping between compatible tools in this range requires no adapters.
- Bench tested on actual hardware: We ran this pack under a simulated motor-start inrush load. The BMS held the rail stable through the trigger-pull spike and did not trip overcurrent protection during repeated cold starts at rated voltage.
- Motor load break-in on first use: Run the tool at half load for two cycles before full-torque applications. This allows the BMS to profile the motor's inrush current draw and set overcurrent thresholds accurately before you push maximum load through the pack.
BMS cutoff on drill motor-start inrush surge
When you pull the trigger on a drill under load, the motor draws a current spike several times higher than the steady running current. If the BMS has not yet calibrated its overcurrent threshold — common with a new or storage-rested pack — it can read that spike as a fault and cut the output rail instantly. The fix is to start the tool unloaded two or three times before applying torque. This lets the BMS log the inrush signature and adjust its trip point accordingly.
Charger not recognising the pack after extended storage
Li-ion cells that have sat unused for several months can drop below the charger's minimum acceptance voltage — typically around 2.5V per cell. When that happens, the charger sees a pack voltage below its wake threshold and either blinks an error or does nothing at all. To recover the pack, place it on the charger for 30 minutes and check for any status change — many chargers will trickle-charge below threshold and eventually accept the pack. If the charger shows no response at all after one hour, measure the pack voltage at the terminals; anything below 12V on an 18V pack signals cell damage rather than a recoverable deep discharge.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Kraftixx
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Kraftixx drill cuts out the moment I squeeze the trigger hard — is that the battery failing or a wiring fault?
That's a BMS overcurrent trip, not a wiring fault. The motor-start inrush current spike on a loaded drill briefly exceeds the BMS protection threshold, so the pack shuts the output rail as a precaution. Run the tool unloaded two or three times first — this lets the BMS log the inrush pattern before you apply full torque. If it still cuts out under load after break-in, check the terminal contacts on the battery slot for corrosion or bent pins causing added resistance.
The tool runs but bogs down badly under sustained drilling load — is this a dead cell or just voltage sag?
Voltage sag under high continuous draw is the most likely cause, not a dead cell. When internal cell resistance rises — from age, shallow cycling, or cold temperatures — the pack voltage drops sharply once the motor demands sustained current. Check the battery contact rails inside the tool housing for oxidation; even 0.1 ohm of added contact resistance amplifies sag noticeably at 18V. If contacts are clean and sag is still severe, the cells have degraded and the pack needs replacement.
This battery dropped to maybe 30% charge, sat unused in my garage over winter, and now the charger just blinks without charging — what happened?
Cold storage accelerates self-discharge, and if the pack voltage dropped below the charger's acceptance threshold over winter, the charger refuses to enter full-charge mode. Leave the pack on the charger for up to an hour — many 18V chargers will attempt a low-current recovery pulse before switching to normal charge. Measure the pack's terminal voltage directly; if it reads above 12V, the charger should eventually wake it. Below 12V at the terminals after one hour on charge means the cells discharged too deeply to recover safely.
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