GE Mack Link 3.7V 2600mAh Replacement Battery 2076585-002

GE Mack Link — 3.7V Li-ion Replacement Battery (2076585-002)

This 3.7V, 2600mAh Li-ion battery replaces the OEM cell in the GE Mack Link portable diagnostic device. It matches the original voltage rail and connector used in the Mack Link platform. Swap it in when the original cell no longer holds a charge or triggers persistent low-battery warnings during patient examinations.

• Mack Link platform fit: The Mack Link uses a single-cell 3.7V Li-ion pack with a BMS that handshakes with the device firmware at startup. This replacement uses the same cell chemistry and connector pinout, so the BMS negotiation completes without error flags.
• Bench tested on actual hardware: We cycled this cell through charge, full-load discharge, and BMS verification. The protection circuit held voltage within spec under continuous draw, and the charge IC accepted a full charge cycle without triggering fault codes.
• Post-swap startup protocol: After installing this battery, let the Mack Link complete its full power-on self-test without interruption. The BMS runs a chemistry verification at boot — cutting power mid-sequence creates a false battery fault that sticks until the next clean reboot cycle.

Device not completing boot sequence on a new Mack Link battery

The Mack Link BMS runs a verification pass during the boot sequence to confirm cell chemistry and state-of-charge. A new cell arriving partially discharged from storage may read below the firmware's minimum boot threshold, which halts startup before the device reaches the home screen. This is a BMS gate, not a faulty battery. Charge the replacement fully before the first boot — confirmed full charge reads 4.2V at the cell terminals — then power on and allow the self-test to finish uninterrupted.

Charge indicator not reaching 100% on the first charge cycle

On the first charge, the Mack Link's charge IC applies a conservative current limit to an unrecognised cell, which causes the indicator to stall below 100% or take significantly longer than expected. This is normal behaviour — the IC is profiling the new cell before committing to a full-rate charge. Complete one full charge-discharge cycle, and the charge IC recalibrates its upper limit. After that first cycle, the indicator will reach 100% at the standard rate.