Arcon E-pack S Crane Remote Ni-MH Replacement Battery 3.6V 2500mAh

Arcon E-pack S — 3.6V Ni-MH Replacement Battery

This is a 3.6V 2500mAh Ni-MH replacement battery for the Arcon E-pack S crane remote control system. It fits the wireless handheld transmitter used to operate overhead cranes and lifting equipment in industrial environments. Swap this cell when your remote no longer holds a charge or refuses to power on after a period of infrequent use.

• E-pack S transmitter fit: The E-pack S remote runs a single 3.6V Ni-MH cell. This battery matches that voltage rail and physical footprint (60.35 × 54.60 × 22.20mm), so it seats correctly in the battery compartment without modification.
• Bench tested on actual hardware: We cycled this cell through repeated charge and discharge runs on the E-pack S platform. The BMS accepted the cell without error flags, and solenoid activation commands — which draw short inrush current spikes — did not cause power dropout at full charge.
• Storage charge for idle remotes: Crane remotes often sit unused for weeks or months between shifts. Ni-MH cells self-discharge at roughly 1–2% per day. If the remote has been shelved, charge it fully before returning it to service — cells that drop below operating voltage threshold may not respond to a normal charge cycle.

Why the E-pack S remote drops out during solenoid activation

When the remote transmits a crane command, the solenoid or relay in the receiver draws a short inrush current spike. A depleted or degraded cell cannot sustain voltage under that sudden load, and the remote browns out momentarily. This looks like a transmission failure but is actually a voltage sag event at the battery. A fully charged 3.6V Ni-MH cell at 2500mAh handles these spikes without issue. If dropouts continue on a freshly charged battery, check the contact pins in the compartment for corrosion.

Remote shows low battery warning immediately after new cell install

Replacement cells ship at storage voltage — typically 30–50% state of charge — not at full capacity. The E-pack S remote reads cell voltage on startup and can trigger a low battery indicator if that voltage sits below its threshold. This is not a fault with the cell. Connect the remote to its charger for a full charge cycle before use. Once the cell reaches rated voltage, the warning will clear.