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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.
MK ES3-12, ES 3-12 12V 3.2Ah UPS Replacement Battery-1
$22.99
$11.79

MK ES3-12, ES 3-12 12V 3.2Ah UPS Replacement Battery

AJC® replacement compatible with MK ES3-12 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts) Capac...

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$22.99
$11.79
MK Replacement Battery ES9-12, ES 9-12 12V 9Ah UPS Replacement Battery-1
$40.99
$20.39

MK Replacement Battery ES9-12, ES 9-12 12V 9Ah UPS Replacement Battery

AJC® replacement compatible with MK ES9-12 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts) Capac...

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$40.99
$20.39
MK ES12-12, ES 12-12 12V 12Ah UPS Replacement Battery-1
$51.99
$25.89

MK ES12-12, ES 12-12 12V 12Ah UPS Replacement Battery

AJC® replacement compatible with MK ES12-12 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts) Capa...

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$51.99
$25.89
MK ES12-12, ES 12-12 12V 10Ah UPS Replacement Battery-1
$45.99
$22.89

MK ES12-12, ES 12-12 12V 10Ah UPS Replacement Battery

AJC® replacement compatible with MK ES12-12 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts) Capa...

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$45.99
$22.89
MK ES7-6, ES 7-6 6V 7Ah UPS Replacement Battery-1
$16.99
$9.39

MK ES7-6, ES 7-6 6V 7Ah UPS Replacement Battery

AJC® replacement compatible with MK ES7-6 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 6V (6 Volts) Capacity...

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$16.99
$9.39
MK M12260 SLD M 12V 26Ah UPS Replacement Battery AJC-D26S-M-0-126040 $55.89
$117.99
$55.89

MK M12260 SLD M 12V 26Ah UPS Replacement Battery

AJC® replacement compatible with MK M12260 SLD M UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts)...

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$117.99
$55.89
MK M50-12 SLD M 12V 50Ah UPS Battery
$304.79
$152.39

MK M50-12 SLD M 12V 50Ah UPS Replacement Battery

This is an UPG® Brand replacement compatible with MK UPS Batteries Terminal: L2 Volts: 12V (12 Volt) Ah: 50Ah (50000mAh) 12v 50ah UB12500 repla...

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$304.79
$152.39
MK M17-12 SLD M 12V 18Ah UPS Replacement Battery-1
$72.99
$34.59

MK M17-12 SLD M 12V 18Ah UPS Replacement Battery

AJC® replacement compatible with MK M17-12 SLD M UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts)...

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$72.99
$34.59
MK ES17-12, ES 17-12 12V 18Ah UPS Replacement Battery-1
$72.99
$34.59

MK ES17-12, ES 17-12 12V 18Ah UPS Replacement Battery

AJC® replacement compatible with MK ES17-12 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts) Capa...

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$72.99
$34.59
MK ES12-6 6V 12Ah UPS Replacement Battery-1
$25.99
$13.29

MK ES12-6 6V 12Ah UPS Replacement Battery

AJC® replacement compatible with MK ES12-6 F2 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 6V (6 Volts) Capa...

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$25.99
$13.29
MK M17-12 SLD M 12V 22Ah UPS Replacement Battery-1
$97.99
$46.39

MK M17-12 SLD M 12V 22Ah UPS Replacement Battery

AJC® replacement compatible with MK M17-12 SLD M UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts)...

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$97.99
$46.39
MK ES17-12 ES 17-12 12V 22Ah UPS Replacement Battery-1
$97.99
$46.39

MK ES17-12 ES 17-12 12V 22Ah UPS Replacement Battery

AJC® replacement compatible with MK ES17-12 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Voltage: 12V (12 Volts) Capa...

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$97.99
$46.39