User's Manual

2-4 Charging the BL-N90/N90K
2-12
2
First Steps
Rechargeable Batteries for the BL-N90/N90K
The BL-N90/N90K sounds an alarm when the battery is low.
When using the scanner, be mindful of the alarm and always maintain a charge.
b Battery low alarm
When the BL-N90/N90K battery level gets low, the following alarms are sounded.
• Each time a barcode is read, a beep sounds two times
b Continuous use capacity
The following table offers estimates of how long the BL-N90/N90K can be used
continuously on a full charge.
* Since the BL-N90/N90K scanner and the communication unit are continuously communicating
wirelessly, battery power is depleted even when the BL-N90/N90K is not in use.
• When not in use, it is recommended that you set the BL-N90/N90K in the communication unit.
• When not using the device for long periods, enabling sleep mode interrupts the wireless
communication, thereby saving battery power.
b Charging time
A fully depleted (no charge) battery takes approximately 4 hours to fully charge.
Reference
•
If the "Trigger" switch is pressed but the laser light is short, or if the laser does
not light when reading a barcode, the battery may be low.
• If the laser does not light even when pressing the "Trigger" switch, then the
battery is completely depleted.
Usage Condition Estimated Continuous Use Length
One scan every 10 seconds Approx. 10 hours
One scan every 5 seconds Approx. 8.5 hours
Idle with full charge
*
Approx. 12 hours
Sleep mode with full charge
*
Approx. 54 hours
Note
•
The continuous use times listed above are estimates. Actual times may vary.
• If the continuous use times decrease remarkably, then it is time to replace the
batteries. Contact your nearest KEYENCE office.
2