Re: AC adapter[ Edited ]
05-01-2011 05:24:49 AM - edited 05-01-2011 05:48:44 AM
A good battery backup unit / BBU will normally have surge protection as aprt of the unit. The surge protection may save your equipment from the reason you have the power failure. Like a close by lighting attack.
The battary backup vendor APC does not recommend stacking battery backups to extend the power. Two 4 hour backups do not give you 8 hours or backup.
Also remember when the battery backup no longer charges at the end of its normal life it is the customers responsibility to repace the battery.