About this replacement
Visonic PowerMaster 30 Control Panel — 7.2V Ni-MH Replacement Battery (LTT-AA1300LSDX6B)
This is a 7.2V, 1500mAh Ni-MH rechargeable battery for the Visonic PowerMaster 30 control panel and compatible PowerMax series alarm panels. It provides backup power to the control panel during mains outages, keeping the alarm system armed and responsive. Fits models including the PowerMaster 30, PowerMax Complete, and Central PM30 control panels.
- PowerMaster 30 and PowerMax series compatibility: These panels share the same 7.2V Ni-MH battery format, connector pinout, and charge management circuit. The panel's onboard charger expects a Ni-MH cell at this voltage — substituting a different chemistry will cause incorrect charge termination and may damage the panel.
- Bench tested on actual hardware: We ran this cell on a PowerMaster 30 panel and confirmed the BMS accepted the battery, initiated trickle charge correctly, and cleared the low-battery fault after the standard float-charge period.
- Post-installation charge period: Do not run a zone or siren test immediately after fitting this battery. Allow 24–48 hours on mains power for the panel to complete float charging before triggering any diagnostic test — otherwise the panel will report a low-battery fault even with a new cell installed.
Alarm panel showing low battery hours after installing new cell
A freshly fitted Ni-MH cell does not arrive fully charged. The PowerMaster 30 uses a supervised charge circuit that monitors cell voltage before clearing battery fault status. Until the cell reaches float voltage — typically after 24–48 hours on mains — the panel will continue to flag a low-battery condition. This is expected behaviour, not a sign of a faulty battery. Leave the panel powered on mains and the fault will clear automatically once the charge cycle completes.
Alarm losing programming during a power outage after battery replacement
If the panel loses its configuration during a mains failure shortly after a battery swap, the new cell has not yet been accepted into the charge circuit. The PowerMaster 30 requires a conditioning period on mains before the backup battery can sustain the panel through a real outage. A cell that has only been on float charge for a few hours may not hold enough capacity to maintain panel memory. Keep the panel on mains for a full 48 hours before testing backup behaviour or cutting mains power intentionally.