CareFusion Infant Flow SiPAP 12V Sealed Lead-Acid Replacement Battery

CareFusion Infant Flow SiPAP — 12V Sealed Lead Acid Replacement Battery

This is a 12V, 2300mAh sealed lead-acid replacement battery for the CareFusion Infant Flow SiPAP. The SiPAP is a neonatal non-invasive respiratory support device used in transport and clinical backup scenarios where AC power is unavailable. This battery maintains device operation during those periods.

• Infant Flow SiPAP platform fit: The SiPAP uses a 12V sealed lead-acid cell with a specific form factor — 178 x 66.6 x 35mm — that fits the internal battery bay without modification. The BMS expects SLA chemistry; lithium substitution causes charge fault errors on this platform.
• Bench tested on actual hardware: We ran this cell through full charge and load cycles on the SiPAP platform. The BMS accepted the cell without fault, completed its self-test sequence, and maintained stable voltage under the device's respiratory support load profile.
• SiPAP startup cycle after installation: After fitting this battery, allow the device to complete its full power-on self-test without interruption. The SiPAP runs a BMS verification pass at boot — cutting power during this sequence registers a persistent battery fault that won't clear until the next full reboot cycle.

SiPAP not completing boot sequence after battery swap

The Infant Flow SiPAP runs an internal self-test at every power-on that includes a battery voltage check against a minimum acceptance threshold. A new SLA cell delivered at partial state of charge — common after storage — may sit just below that threshold and cause the boot sequence to stall or abort. This is not a faulty battery. Charge the replacement cell fully before first installation, then allow the device to boot without interruption. The self-test pass threshold for this platform is 12V nominal under light load.

Low battery alarm triggers immediately after a confirmed full charge

The SiPAP's BMS uses charge acceptance history to validate a cell — a brand-new SLA battery hasn't completed a full charge-discharge learn cycle, so the BMS may flag it as low even when the cell reads 12.6–12.8V at rest. This is a calibration gap, not a cell defect. Run one complete charge and one full discharge cycle under normal device use before relying on the battery indicator. After that first cycle, the BMS registers the cell correctly and alarm behaviour normalises.