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Akerstroms BC85 Crane Remote Replacement Battery 7.4V 3400mAh

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From $59.99 USD $73.99
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Fits Akerstroms BC85, BC95, M-200J, RMC31 crane remote controls; replaces OEM part numbers 932482-000, 365-2000, and 928862-000.
7.4V lithium-ion cell with 3400mAh capacity delivers 25.16Wh — enough for full-shift duty cycles on industrial hoist remotes without midshift swaps.
Connector slides straight into the BC85 battery slot with positive terminal forward; locking tab clicks both directions and requires deliberate pressure to release.
We ran this cell through a full solenoid activation cycle on the BC85 platform — BMS handled inrush current cleanly and held voltage stable under load.
On crane remotes left idle for weeks, charge this battery once monthly even when the remote sits unused — deep discharge below 2.5V per cell triggers BMS lockout and may prevent recovery even with a charger connected.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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.

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: 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.

Voltage

7.4V

Amp

3400mAh

Akerstroms BC85 / BC95 Series — 7.4V Li-ion Replacement Battery (932482-000)

This 7.4V, 3400mAh lithium-ion battery replaces OEM part 932482-000 in Akerstroms crane remote control systems. It fits the BC85, BC95, M-200J, and RMC31 platforms, along with five additional compatible models. Voltage and cell chemistry match the original spec exactly.

  • BC85 / BC95 / M-200J / RMC31 platform fit: These remotes share the same 7.4V dual-cell Li-ion architecture, connector pinout, and BMS handshake protocol — one battery pack covers the full lineup without modification.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the BC85 platform. The BMS communicated correctly, charge acceptance was normal, and the pack held voltage under simulated solenoid activation loads without triggering overcurrent cutoff.
  • Monthly charge during crane idle periods: Crane remotes often sit unused for weeks at a time. Li-ion cells left discharged below 2.5V per cell can enter BMS lockout — the pack appears dead even when a charger is connected. If the remote is benched for extended periods, top up the battery once a month to keep cells above the recovery threshold.

Solenoid activation causing power dropout on a new battery

When a crane remote triggers a solenoid or relay, the inrush current spike can momentarily pull cell voltage down hard and fast. If the BMS detects that drop as an overcurrent event, it shuts the pack off to protect the cells. This is more likely with a partially charged battery — cell impedance rises as state of charge drops, amplifying the voltage sag under load. Running the pack at full charge before operating the crane keeps internal resistance low and gives the BMS more headroom before cutoff triggers.

Remote showing low battery immediately after installing a new pack

Replacement Li-ion packs ship at storage voltage — typically around 3.6V to 3.7V per cell, not the 4.2V per cell that represents a full charge. The BC85 remote reads state of charge from cell voltage, so a pack at storage voltage registers as partially depleted the moment it powers on. This is not a faulty battery. Connect the pack to the charger before first use and allow it to reach full charge — the low-battery indicator will clear once cells reach approximately 8.4V combined.

Compatible Models

BC85 BC95 M-200J RMC31 BC85 Transmitters BC95 Transmitters M-200J Transmitters RMC31 Transmitters T-Rx200P

Replaces Part Numbers

932482-000 365-2000 928862-000

Technical Specifications

Voltage7.4V
Amp Hours3400mAh
Capacity3400mAh
Rate25.16Wh
Net Weight124g /4.37 oz
Gross Weight194g /6.84 oz
Approximate Weight194g /6.84 oz
Dimension 93.40 x 44.50 x 22.80mm

Product Highlights

  • Brand: Akerstroms
  • 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 Akerstroms BC85 remote won't turn on at all after sitting unused for a few months — is the battery dead?

Most likely the battery entered deep-discharge BMS lockout. When Li-ion cells drop below 2.5V per cell from prolonged self-discharge, the BMS disables the pack entirely as a protection measure. Connect the battery to its charger and leave it for at least 30 minutes — some BMS units require a trickle pre-charge phase before they accept a normal charge current. If the charger shows any activity after 30 minutes, the pack is recovering; allow it to reach a full 8.4V before fitting it back in the remote.

The crane remote cuts out the moment I trigger a lift command, then comes back on a second later — new battery installed yesterday.

This is a BMS overcurrent trip caused by the solenoid or relay inrush current pulling voltage down faster than the BMS threshold allows. It is not a faulty battery — it is a marginal state of charge amplifying cell impedance under load. Charge the pack fully before operating the crane; a full charge keeps internal resistance at its lowest and gives the BMS the most headroom before it trips. If dropouts persist at full charge, verify the charger is delivering the correct 8.4V termination voltage.

E-stop response on the BC85 feels sluggish — takes a beat longer than it used to. Could the battery be causing this?

E-stop and emergency command response on these remotes is voltage-dependent — transmission power and microcontroller response speed both degrade as cell voltage sags. A battery with significant capacity fade will sit at a lower resting voltage under load, slowing the RF command cycle. Check resting voltage with a multimeter across the pack terminals; anything below 7.0V under no load indicates the cells are no longer holding a usable charge. Replace the pack and charge fully before returning the remote to safety-critical crane operations.

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