the main advantage of uninterruptible power supply lies in its uninterrupted power supply. When the AC input of the city is normal, the UPS changes the alternating current into direct current, and then the direct current is turned into a stable non impurity alternating current.

    Once the AC input, such as voltage or power outage or abnormal frequency, then UPS will enable alternate energy storage battery, a rectifier circuit UPS will shutdown, accordingly, the battery DC reverse into stable pure AC, continue to use after the level load.

Q:What's the type of UPS?
A:It's a mini on-line UPS.

Q:how is it work?
A:When have electricity,UPS act as a bridge, city power provide electric to device,at the same time,UPS is being charging.When no electricity,then UPS back up the device.

Q:how to charge the UPS?
A:Battery will only charge with power switch in the ON position.

Q:What's the backup time?how can i decide which model is suitable to my device?
A:Different capacity will have different backup time,with following information,we can choose the most suitable UPS to you:
1.What's the device you plan to use?
2.What's the working voltage and current?
3.What's your expected backup time?

Q:how can I maintain the device lifetime?
A:When stored, the UPS will self-discharge at a rate that is greatly affected by the ambient temperature. It should therefore be fully charged before being put into storage and if it is to be stored for a long period, it should be recharged periodically to prevent it from losing its original capacity. 
as a guide, the UPS should not be stored for longer than the periods shown below without being recharged:
6 months at 20C
3 months at 30C
2 months at 35C
If the UPS was not used for long time, it is suggested to charge it once every 3~5months

 Q:Do you have any other models?

A:Yes,we have variety models with defferent capacities,please contact with me for more details.