![](http://www.alamy.com/thumbs/6/7F1DAB84-BE4B-4F19-BCA0-1D1CA7372229/HHWX4P.jpg)
sealed rechargeable lead-acid battery used in back up power units - top view
APC spare battery
Size: 4928px × 3264px
Photo credit: © divgradcurl / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: acid, backup, batteries, battery, blackout, charge, chemicals, discharge, electricity, electrolisys, electrolyte, energy, lead, lead-acid, package, power, protection, reaction, rechargeable, sealed, spare, stand-, storage, supply, systems, top, ups, view