Power Supply
The MX7 uses two batteries for operation.
l Main Battery A replaceable 2200 mAh Lithium-Ion (Li-Ion) battery pack. The battery pack recharges while in the MX7
when the device is connected to the optional external MX7 AC/DC power source. The main battery pack can be
removed from the MX7 and inserted in the MX7 Multi- Charger which simultaneously charges up to five battery packs in
four hours. The MX7 status indicator is illuminated when the backup battery is being charged by the main battery pack.
A new main battery pack can be fully charged in 6 hours when it is in an MX7 connected to AC power and 3.5 hours
when it is in the MX7 battery charger.
l Backup Battery An internal 50mAh Nickel Cadmium (NiCad) battery. The backup battery is recharged directly by the
MX7 main battery pack. Recharging maintains the battery near full charge at all times. When the backup battery is fully
drained, it may take up to 5 hours to recharge. The capability to discharge the backup battery is provided to allow the
user to condition the battery in order to recover full battery capacity. The backup battery must be replaced by qualified
service personnel. The battery has a minimum 2 year service life.
An uninterrupted external power source (wall AC adapters) transfers power to the MX7’s internal charging circuitry which, in
turn, recharges the main battery and backup battery. Frequent connection to an external power source, if feasible, is
recommended to maintain backup battery charge status as the backup battery cannot be recharged by a dead or missing main
battery.
Note: The MX7 Battery Charger/Analyzer (Model MX7A385CHGR5US, MX7A386CHGR5WW) has been discontinued.
The replacement is the MX7 Tecton Battery Charger (Model MX7390CHARGER, MX7391CHARGER). An updated
battery pack has been released. MX7 battery packs can be charged using the MX7 Battery Charger/Analyzer and the
MX7 Tecton Battery Charger.
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