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Battery Operation Procedures
Please full charge battery before first use
Using one or two Batteries
• The EX50Li allows the option of using one or two battery packs.
• When using one battery, simply plug the battery into either one of the two battery
connectors (left, right or both).
• Be sure to secure the unused battery connector by placing electrical tape over the
contacts.
• When powered on, the system will identify quantity of batteries and locations used.
• For a true redundant system, two batteries are recommended.
• When using dual batteries, it’s important that both batteries be of the same charge
level and ideally of the same age and condition.
• The control system will control all battery charge and discharge during use.
• Battery status will be displayed on control panel.
• When AC is disconnected and Speed Control is off (speed = 0), the controller and
battery(s) will enter a sleep mode to conserve the battery power after 60 minutes of no
activity.
• To wake the ventilator, push and hold WAKE | STOP Button on Control Panel.
Battery Status LED Light will show white solid for the status. The unit will return to
sleep mode if not used within 10 minutes.
• The ventilator starts at the lower speed = 0. Speed will vary by 11 levels - from 11
(highest) to 0 (off). Turn clockwise to increase speed. At level 11 (the highest), if keep
turning the control knob clockwise, the speed will not change, it will stay at highest
speed all the time. To slow down, turn counterclockwise.
• If you want to increase the speed, push and hold the MAX Button Ventilator
Status LED Light will flash white for the status. Remember that this will only work when
2 batteries are connected to the ventilator and when it is operating exclusively on DC
current source (battery).
• To STOP the ventilator, push and hold WAKE|STOP Button on Control Panel.
Battery Status LED Light will be unlit.
• Battery(s) may be swapped for charged batteries at any time.
• Reduce run speed to minimum required to increase runtime.
Battery Operation Procedures
Run Time
Run time refers to how long the ventilator on battery power will last under a given load.
We will assume both batteries have full charge beforehand and also 100% efficiency (Read
"Factors that affect Battery Life" section):
2 Batteries
Speed Level Knob
At maximum speed
45 minutes
11
At maximum speed and Max
button activated
30 minutes
Max button activated