KEYENCE BL-N90 Series - Manual (Page 32)

2-4 Charging the BL-N90
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Rechargeable Batteries for the BL-N90
The BL-N90 sounds an alarm when the battery is low.
When using the scanner, be mindful of the alarm and always maintain a charge.
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Battery low alarm
When the BL-N90 battery level gets low, the following alarms are sounded.
• Each time a barcode is read, the buzzer sounds twice .
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Continuous use capacity
The following table offers estimates of how long the BL-N90 can be used continuously on
a full charge.
* Since the BL-N90 and the communication unit are continuously communicating wirelessly,
battery power is depleted even when the scanner is not in use.
• When not in use, it is recommended that you set the scanner in the communication unit.
• When not using the device for long periods, enabling sleep mode ( page 3-14) interrupts
the wireless communication, thereby saving battery power.
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Charging time
A fully depleted (no charge) battery takes approximately 4 hours to fully charge.
Note
• If the laser only lights for a short period of time after pressing "Trigger", then there is
low battery power.
• If the laser does not light after pressing "Trigger", then the battery is completely
depleted.
Condition for use Estimated continuous use time
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 significantly, then it is time to replace the
batteries. Contact your nearest KEYENCE office.
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