Cavotec MC3300 Replacement Battery 7.4V 3400mAh
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Cavotec MC3300 Replacement Battery 7.4V 3400mAh - 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.
Cavotec MC3300 Replacement Battery 7.4V 3400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
3400mAh
Cavotec MC3300 — 7.4V Li-ion Replacement Battery (M9-1051-3600)
This 7.4V, 3400mAh Li-ion battery replaces the original cell in the Cavotec MC3300 wireless crane remote control system. It fits the handheld transmitter used to operate overhead cranes and material handling equipment on industrial sites. Swap it in when the original battery no longer holds a charge or the remote shuts down mid-operation.
- MC3300 transmitter fit: The MC3300 remote uses a dedicated battery bay with a specific connector and BMS handshake tied to the M9-1051-3600 part number. This cell matches that voltage rail and connector so the remote's onboard controller accepts it without fault codes.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the MC3300 platform. The BMS responded correctly to charge termination at 8.4V and cut off at the low-voltage threshold without locking the remote out.
- Monthly charge during idle periods: Crane remotes often sit unused for weeks between jobs. Keep this battery charged once a month during those gaps — Li-ion cells discharged below 2.5V per cell trigger BMS deep-discharge lockout, and the charger may not recover them.
Solenoid activation causing power dropout on the MC3300
When the MC3300 transmitter sends a crane command, the solenoid or relay in the receiver pulls significant inrush current back through the control loop. A partially discharged or degraded battery can sag below the BMS cutoff voltage at that moment, causing the remote to drop out mid-command. This is not a fault with the remote itself — it is a battery capacity issue. Install a fully charged cell and verify voltage reads at or above 7.8V before operating.
Remote showing low battery immediately after a new cell is installed
Replacement cells ship at storage voltage — typically 3.7V to 3.85V per cell, which reads as partial charge on the MC3300's indicator. The remote is not defective and the battery is not faulty. Connect the battery to the Cavotec charger and run a full charge cycle before first use. The low-battery indicator should clear once the pack reaches approximately 8.2–8.4V.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Cavotec
- 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 MC3300 crane remote won't power on at all after sitting in the site office for two months — is the battery dead?
Most likely the battery has dropped below 2.5V per cell from extended inactivity, which triggers BMS deep-discharge lockout. The remote won't power on because the BMS is blocking output to protect the cells. Connect the battery to the Cavotec charger and leave it for at least 30 minutes — some BMS circuits need a trickle charge to re-initialise before normal charging begins. If the charger light eventually turns green and the battery reaches 8.4V, the cell has recovered.
The crane remote cuts out the moment I press a movement button, then comes back on straight away — new battery fitted yesterday.
This is a voltage sag fault. The solenoid or relay activation on the crane receiver creates an inrush current spike that pulls the transmitter's battery below the BMS cutoff threshold for a split second, triggering a shutdown. It happens when a new cell is installed at storage voltage rather than a full charge. Charge the battery fully to 8.4V before operating — the sag margin at full charge is wide enough to handle the inrush without tripping the BMS.
E-stop response on the MC3300 feels slower than usual and the crane takes a beat longer to stop — battery at half charge.
E-stop signal transmission on the MC3300 is voltage-dependent — a partially discharged pack reduces the transmitter's output power, which increases signal latency to the receiver. In a safety-critical stop scenario, that delay matters. Always start a shift with a fully charged battery; treat anything below 7.8V as a signal to swap or recharge before operating.
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