AeroScout 24 Replacement Battery 3.6V 1200mAh B01775

AeroScout Model 24 Series — 3.6V Li-SOCl2 Replacement Battery (B01775)

This is a 3.6V, 1200mAh lithium-thionyl chloride cell for the AeroScout Model 24, 242, 243, and T2EB tracking tags, among others. These tags run real-time location systems in medical facilities — patient monitoring, asset tracking, and clinical workflow. Part numbers B01775, OM01775, and XLP-050F all cross to this cell.

• AeroScout tag series compatibility: The Model 24, 242, 243, and T2EB tags share the same 3.6V Li-SOCl2 voltage rail and connector format. The BMS expects the flat discharge curve specific to Li-SOCl2 chemistry — swapping in a Li-ion cell will trigger a false low-battery alarm within the first hour of use.
• Bench tested on actual hardware: We ran this cell against the tag's BMS handshake sequence. The cell passed voltage threshold checks at power-on and held stable output across the tag's standard RF transmission bursts. No BMS rejection or fault flag was recorded during testing.
• Post-swap self-test protocol: After installing this cell, let the tag complete its full power-on self-test without removing it from the cradle or interrupting the boot cycle. AeroScout tags run a BMS verification pass at startup — cutting power mid-sequence locks in a battery fault flag that won't clear until the next full reboot.

Why AeroScout tags report low battery immediately after a fresh cell install

Li-SOCl2 cells can develop a thin passivation layer on the anode during storage. This layer temporarily raises internal resistance and causes a brief voltage dip when the tag first draws current. The AeroScout BMS interprets this dip as a low-battery condition and flags the alarm. The passivation layer breaks down within the first few transmission cycles, internal resistance drops back, and the alarm clears on its own — no reset needed.

Tag will not power on after cell was stored for an extended period

Li-SOCl2 cells self-discharge slowly in storage, but if the cell dropped below the BMS recovery threshold — typically around 3.2V for this class of tag — the BMS will block startup entirely. Check the open-circuit voltage of the replacement cell with a multimeter before installing. A reading above 3.5V confirms the cell is within the BMS acceptance window. If the cell reads below 3.4V, replace it with a fresh unit before fitting it to the tag.