Daitem D14000 Replacement Battery BATLi06 7.2V 8500mAh

Daitem D14000 / DP8000 Series — 7.2V Li-SOCl2 Replacement Battery (BATLi06)

This is a 7.2V, 8500mAh Li-SOCl2 backup battery for Daitem alarm system control panels. It fits the D14000, DP8000, DP1000, and D8000 among others, replacing OEM part BATLi06. It keeps the panel alive during mains failure and holds programming and alarm history when power cuts out.

• Cross-series compatibility — D14000, DP8000, DP1000, D8000: These panels share the same 7.2V backup rail, BATLi06 connector footprint, and charge management circuit. One cell covers all of them without any wiring changes.
• Bench tested on actual hardware: We ran this cell through a full charge acceptance cycle on a D14000 panel. The BMS accepted the cell cleanly, float charge settled within expected parameters, and the panel cleared its low-battery flag after the conditioning window closed.
• Post-installation charge window: Do not run a zone or siren test immediately after fitting this cell. Li-SOCl2 cells need 24–48 hours on float charge before the panel BMS reports accurate status. Testing too early will trigger a false low-battery fault that clears on its own once the cell is fully conditioned.

Why Li-SOCl2 chemistry matters in a Daitem backup cell

Li-SOCl2 (lithium thionyl chloride) holds a stable voltage curve across its entire discharge cycle, which is exactly what alarm panels need for consistent BMS reporting. Unlike Li-ion, it does not require a protection circuit to manage charge rate — the panel's own charge management handles it. The chemistry also has very low self-discharge, so the cell stays ready even through long standby periods between power outages. At 8500mAh, this cell meets the original Daitem specification for panels in the D14000 and DP8000 series.

Panel reports low battery 24 hours after fitting the new cell

This is the most common call after a BATLi06 swap. The panel's charge controller needs a full float cycle before it re-evaluates battery status — this typically takes 24 to 48 hours on mains power. If the low-battery indicator is still showing after 48 hours, check that the cell connector is fully seated and the terminal voltage reads at or above 7.2V with a multimeter. A reading below 6.8V at rest suggests a poor connection rather than a faulty cell.