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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
$11.49

MK ES3-12 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) Capaci...

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$11.49
MK ES12-12, ES 12-12 12V 12Ah UPS Replacement Battery-1
$23.99

MK ES12-12 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) Capac...

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$23.99
MK Replacement Battery ES9-12, ES 9-12 12V 9Ah UPS Replacement Battery-1
$17.99

MK ES9-12 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) Capaci...

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$17.99
MK ES12-12, ES 12-12 12V 10Ah UPS Replacement Battery-1
$21.99

MK ES12-12 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) Capac...

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$21.99
MK M12260 SLD M 12V 26Ah UPS Replacement Battery-1
$50.69

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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$50.69
MK ES7-6, ES 7-6 6V 7Ah UPS Replacement Battery-1
$8.99

MK ES7-6 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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$8.99
MK ES17-12, ES 17-12 12V 18Ah UPS Replacement Battery-1
$34.29

MK ES17-12 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) Capac...

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$34.29
MK M50-12 SLD M 12V 50Ah UPS Battery
$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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$152.39
MK M17-12 SLD M 12V 18Ah UPS Replacement Battery-1
$34.29

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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$34.29
MK ES12-6 6V 12Ah UPS Replacement Battery-1
$12.69

MK ES12-6 6V 12Ah UPS Replacement Battery

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

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$12.69
MK M17-12 SLD M 12V 22Ah UPS Replacement Battery-1
$40.89

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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$40.89
MK ES17-12 ES 17-12 12V 22Ah UPS Replacement Battery-1
$40.89

MK ES17-12 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) Capac...

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$40.89