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UPS Batteries

UPS is short for “uninterruptible power supply.” It is designed for use with various electronics, especially computers and telecom systems, where a power outage could potentially be catastrophic. Browse our selection of UPS replacement batteries from some of the top UPS brands below.

Fortress Best Power Unity UT8K 12V 75Ah UPS Replacement Battery-1
$142.59

Fortress Best Power UT8K 12V 75Ah UPS Replacement Battery

AJC® replacement compatible with Fortress Best Power UT8K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (1...

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$142.59
Fortress Best Power Fortress LI 750 BAT-0063 6V 10Ah UPS Replacement Battery-1
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$12.59

Fortress Best Power BAT-0063 6V 10Ah UPS Replacement Battery

AJC® replacement compatible with Fortress Best Power BAT-0063 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 6V...

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$12.59
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Fortress Best Power Fortress LI 2.5KVA BAT-0065 12V 35Ah UPS Replacement Battery-1
$69.69

Fortress Best Power BAT-0065 12V 35Ah UPS Replacement Battery

AJC® replacement compatible with Fortress Best Power BAT-0065 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12...

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$69.69
Fortress Best Power Blackout Buster 12V 7Ah UPS Replacement Battery-1
$14.49

Fortress Best Power Blackout Buster 12V 7Ah UPS Replacement Battery

AJC® replacement compatible with Fortress Best Power Blackout Buster UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Volt...

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$14.49
Fortress Best Power BA-41 (BAT-53) 12V 35Ah UPS Replacement Battery-1
$69.69

Fortress Best Power BA-41 (BAT-53) 12V 35Ah UPS Replacement Battery

AJC® replacement compatible with Fortress Best Power BA-41 (BAT-53) UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Volta...

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$69.69

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