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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

external UPS battery

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andrew2022

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my UPS has a 12VDC battery. when its running from battery, could i connect an external 12VDC source (i.e another battery) so itll last longer?
 
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