Claviers RAK22 Replacement Battery 6V 800mAh Li-MnO2

Claviers RAK22 — 6V Li-MnO2 Replacement Battery

This is a 6V 800mAh lithium-manganese dioxide cell for the Claviers RAK22 wireless alarm remote. It powers the key fob transmitter and panic button used in residential and commercial security installations. Swap it when the remote stops triggering the alarm panel or loses transmission range.

• RAK22 transmitter fit: The RAK22 remote runs a fixed 6V supply rail to drive its RF transmitter circuit. This cell matches that rail exactly. The Li-MnO2 chemistry holds a flat discharge curve across temperature extremes, which matters for outdoor or unheated installations where alkaline cells sag early.
• Bench tested on actual hardware: We cycled this cell through repeated transmit bursts at the RAK22's signal frequency. The BMS held voltage steady through each transmission event with no brownout dip at the RF stage.
• Post-install panel check: Do not run a full zone or diagnostic test immediately after fitting this cell. Allow 24 to 48 hours on the panel's float charge circuit first. Testing too early can cause the panel to log a false low-battery fault because the cell has not yet reached full resting voltage on the supervision line.

Why the RAK22 remote still fails to trigger the panel after a new cell

A fresh Li-MnO2 cell ships at roughly 85–90% of its rated open-circuit voltage. The RAK22's RF transmitter needs the full 6V supply to produce a signal strong enough to clear the panel's receive threshold. If the cell has not settled to full resting voltage, the transmitted signal may fall below the panel's sensitivity window. Wait 30 to 60 minutes after fitting the cell before testing a panic trigger. If the remote still fails, measure the cell directly — it should read at or above 6.0V at rest.

Panel supervision line reporting low battery 24 hours after cell swap

Alarm panels poll the remote's supervision signal on a timed cycle and compare the reported voltage against a threshold — typically around 5.4V for a 6V transmitter. If the new cell was installed without fully seating the battery contacts, resistance at the connector raises the effective load impedance and pulls the reported voltage down. Remove the cell, clean both contacts with a dry cloth, and refit until the cell clicks or sits flush. Recheck the panel supervision log after 24 hours — the low-battery flag should clear once the cell reads above 5.8V on the supervision line.