Fromm P318 18V Replacement Battery 6000mAh Li-ion
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Fromm P318 18V Replacement Battery 6000mAh Li-ion - 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.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Fromm P318 18V Replacement Battery 6000mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
18V
Amp
6000mAh
Fromm P318 / P326 / P327 / P328 Series — 18V Li-ion 6.0Ah Replacement Battery
This is an 18V lithium-ion battery rated at 6000mAh (108Wh), built to replace the original pack on Fromm P318, P326, P327, and P328 cordless strapping tools. The battery slots into the same port and communicates with the same BMS handshake the tool expects. Voltage and capacity figures match the original specification.
- P318 / P326 / P327 / P328 compatibility: These four Fromm models share the same 18V rail, battery connector footprint, and BMS communication protocol — which is why one pack covers the full group. Swapping between them requires no adapters.
- Bench tested on actual hardware: We ran full charge and discharge cycles and monitored the BMS response during simulated motor-start inrush. The overcurrent threshold held correctly at trigger pull, and cell balancing completed without fault flags across all tested packs.
- Break-in on strapping tools: On first use, run the tool through two light-tension strapping cycles before applying maximum tension settings. This gives the BMS time to profile the motor inrush draw from the tensioning head before locking its overcurrent thresholds.
BMS cutoff on motor-start inrush during tensioning cycles
Cordless strapping tools pull a sharp current spike the moment the tensioning motor engages. On a new or recently stored pack, the BMS overcurrent threshold may not yet be calibrated to the motor's inrush profile, causing the tool to cut out immediately on trigger pull. This is a protection trip, not a cell fault. Running two low-tension cycles first allows the BMS to log the inrush pattern and set a stable threshold before you apply full load.
Pack sits on charger but never advances past the red blink after storage
When a Li-ion pack sits unused for several months, cell voltage can drop below the charger's acceptance threshold — typically around 2.5V per cell. Most chargers interpret this as a faulty or incompatible pack and refuse to start a full charge cycle. To recover it, leave the pack on the charger for 15–20 minutes without removing it; most charger firmware includes a trickle pre-charge stage that slowly brings cells back above the acceptance floor before switching to the main charge cycle. If the charger still shows red after 30 minutes, check that each contact pin on the battery is clean and making full contact — oxidised pins will prevent the handshake voltage from registering correctly.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Fromm
- 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
The P318 cuts out the instant I pull the trigger — why does it trip immediately on start?
This is a BMS overcurrent trip caused by the motor-start inrush spike exceeding the pack's protection threshold. It happens most often with a new or freshly charged pack that hasn't yet logged the tool's inrush profile. Run two low-tension cycles first so the BMS can calibrate before you apply full tensioning load. If it still trips under light load, check that the battery contact pins are seated fully — a partial connection raises effective resistance and amplifies the apparent current spike.
The tool completes cycles but feels weak halfway through a job — tension feels inconsistent under load
Voltage sag under sustained draw is the cause — when contact resistance at the battery terminals rises, the voltage rail drops enough for the motor to lose torque. Clean the battery contact pins and the tool's battery port with a dry cloth or contact cleaner, then reseat the pack firmly. If sag persists across a full charge, check whether the pack has been repeatedly charged at low depth — shallow cycling causes capacity fade that shows as rail voltage collapsing under load. A full discharge and full recharge cycle can partially recondition the pack, but ongoing shallow cycling will continue to degrade usable capacity.
The P318 is sluggish in cold weather even with a full charge — is the battery failing?
No — Li-ion internal resistance rises sharply below 5°C, which restricts current delivery and drops the effective voltage under load. The cells hold their stored charge, but they cannot discharge it fast enough to sustain full motor torque in the cold. Bring the battery to room temperature before starting work — even 15 minutes indoors is enough to drop internal resistance back to normal operating range. Avoid storing packs in unheated vans or sheds overnight during winter if you need full performance at the start of the shift.
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