[Nut-upsuser] My APC ups shutdown but doesn't start again

[Edjé]

Hello,
My APC Ups uses nut to manage all systems connected to it. But if online power failed until it shutdown, it not restart automatically after the power returned. It stay down until i restart it.
When i execute the command: # upsc siUps1
it output me this:
battery.alarm.threshold: L
battery.charge: 018.0
battery.charge.restart: 15
battery.date: 03/31/07
battery.runtime: 120
battery.runtime.low: 120
battery.voltage: 26.77
battery.voltage.nominal: 024
driver.name: apcsmart
driver.parameter.pollinterval: 2
driver.parameter.port: /dev/ttyS0
driver.parameter.sdtype: 0
driver.version: 2.2.0-
driver.version.internal: 1.99.8
input.frequency: 51.00
input.quality: FF
input.sensitivity: H
input.transfer.high: 253
input.transfer.low: 208
input.transfer.reason: S
input.voltage: 226.0
input.voltage.maximum: 226.0
input.voltage.minimum: 222.0
output.voltage: 224.0
output.voltage.nominal: 230
ups.delay.shutdown: 300
ups.delay.start: 000
ups.firmware: 738.2.I
ups.id: UPS_IDEN
ups.load: 033.1
ups.mfr: APC
ups.mfr.date: 03/31/07
ups.model: Smart-UPS SC1500
ups.serial: 5S0713T66466
ups.status: OL
ups.test.interval: 1209600
ups.test.result: NO

 What can be my problem? Battery is concerned? Please Help.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.alioth.debian.org/pipermail/nut-upsuser/attachments/20080418/cafcd3ee/attachment.htm