Gross Funk BC-GF500 Crane Remote Compatible Battery 7.2V 2500mAh
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Gross Funk BC-GF500 Crane Remote Compatible Battery 7.2V 2500mAh - is backordered and will ship as soon as it is back in stock.
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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
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Disclaimer
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Gross Funk BC-GF500 Crane Remote Compatible Battery 7.2V 2500mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.2V
Amp
2500mAh
Gross Funk GF500 Crane Remote Control — 7.2V Ni-MH Replacement Battery (BC-GF500)
This is a 7.2V, 2500mAh Ni-MH replacement battery for the Gross Funk GF500 crane remote control transmitter. It fits the handheld unit used to operate overhead cranes and lifting equipment in industrial environments. OEM part numbers BC-GF500, FUA15, FUA50, and 100-001-885 all cross-reference this cell pack.
- GF500 transmitter fit: The GF500 remote uses a 7.2V Ni-MH pack with a specific connector and physical footprint. This replacement matches the OEM cell configuration and BMS handshake so the transmitter's charge indicator and low-battery warning behave as expected after swap.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a GF500-compatible test rig. The BMS held cutoff voltage within spec and did not trigger false low-battery alerts at full charge. Solenoid activation draw did not cause voltage dropout during testing.
- Monthly charge during idle periods: Crane remotes often sit unused between jobs. Ni-MH cells self-discharge faster than Li-ion — typically 1–3% per day. A battery left in storage for two to three months can drop low enough that the transmitter refuses to power on. Charge this pack once a month during any idle period to prevent that.
Why the GF500 transmitter cuts out during solenoid or relay activation
When the crane's solenoid or relay engages, the receiver pulls a short but sharp inrush current spike. If the transmitter battery is partially discharged, its internal resistance rises — and that spike can drag cell voltage below the BMS cutoff threshold for a fraction of a second. The BMS interprets this as a fault and shuts down the output, causing the remote to drop signal mid-operation. A fully charged pack keeps internal resistance low enough to absorb that inrush without triggering cutoff. Always start a shift with a fully charged battery when solenoid-heavy operations are planned.
GF500 remote shows "low battery" immediately after fitting a new cell
New Ni-MH packs ship at storage voltage — typically around 6.0–6.5V for a 7.2V pack — not at full charge. The GF500 transmitter reads this as a low or depleted battery and flags the warning instantly. This is not a faulty cell. Place the battery on charge before first use and allow it to reach full charge voltage (around 8.5–8.7V at charge termination for a 7.2V Ni-MH pack). The low-battery indicator will clear once the pack is properly charged and seated.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Gross Funk
- Manufacturer: CS
- Series: Standard
- Color: Orange
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My GF500 crane remote won't turn on after sitting unused for two months — is the battery dead?
Probably not dead, but it may be in deep-discharge. Ni-MH cells self-discharge at 1–3% per day, so two months of storage can drain the pack below the transmitter's minimum operating voltage. Connect the battery to its charger and leave it for at least 30 minutes before trying to power the remote. If the transmitter still won't start after a full charge cycle, check that charge termination reached at least 8.5V across the pack.
The crane remote loses signal the moment I activate a hoist movement — then recovers straight away. Why?
This is a voltage sag fault triggered by inrush current from the relay or solenoid engaging. When the battery is partially discharged, its internal resistance rises enough that the current spike pulls cell voltage below the BMS cutoff point for a split second — dropping the transmitter output. The remote recovers because the BMS resets once the spike passes. The fix is to start the shift on a fully charged pack; a fresh charge brings internal resistance down and prevents the sag from hitting cutoff.
The E-stop on my GF500 remote seems slower to respond than it used to — could the battery be causing this?
Yes, response time on safety functions is voltage-dependent. As a Ni-MH pack ages or loses charge, the transmitter's output power drops, which can add latency to signal transmission and receiver acknowledgement. Check the resting voltage — a healthy, fully charged 7.2V Ni-MH pack should read 8.4–8.7V off the charger. If it reads below 7.5V within a few minutes of disconnecting, the pack has lost capacity and needs replacement before the remote is used in any safety-critical lift.
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