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Mighty Max Battery ML8-12 - 12V 8AH Replacement for APC Back-UPS ES 500 Battery
Mighty Max Battery

Mighty Max Battery ML8-12 - 12V 8AH Replacement for APC Back-UPS ES 500 Battery

Bottom line: The Mighty Max Battery ML8-12: Direct 12V 8AH swap for APC Back-UPS ES 500, F1 terminals; main trade-off: battery only, no wire harness or mounting hardware included.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Direct 12V 8AH swap for APC Back-UPS ES 500, F1 terminals
  • ✓ UL Certified sealed lead acid, no maintenance or topping off
  • ✓ Spill-proof AGM design mounts in any orientation
  • ✓ Backed by a full one-year warranty

Cons

  • ✗ Battery only, no wire harness or mounting hardware included
  • ✗ 5.94 x 2.56 x 4.02 in may not drop into every UPS tray
  • ✗ F1 terminals only, F2 spade connectors need an adapter
  • ✗ SLA chemistry is heavy compared with lithium replacements

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SpecPicks Verdict

SpecPicks scored Mighty Max Battery ML8-12 using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. Mighty Max Battery's power protection lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • ML8-12 SLA is a 12V 8AH Sealed Lead Acid (SLA) rechargeable maintenance free battery - UL Certified
  • Dimensions: 5.94 inches x 2.56 inches x 4.02 inches. Terminal: F1. Listing is for the Battery only. No wire harness or mounting accessories included.
  • SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures and long service life.
  • Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures.
  • Full One Year Warranty

Full Specifications

BrandMighty Max Battery
Voltage12 volts
Amperage8 A
Dimensions5.94 inches x 2.56 inches x 4.02 inches. Terminal: F1. Listing is for the Battery only. No wire harness or mounting accessories included.
Model NameML8-121119
Unit Count1 Count
ReusabilityRechargeable
Model NumberML8-121119
Battery Weight5 pounds
Item Type Namelead_acid_battery
Item Dimensions5.94 x 2.56 x 4.02 inches
Antenna LocationPower Tool
Battery Capacity8
Vibration/RumbleYes
Battery Cell TypeLead Acid
Included ComponentsBattery
Number of Batteries1 12V batteries required.
Warranty Description1 Year Manufacturers Warranty
Compatible Phone ModelsNo Phone Models
Battery Cell CompositionLead Acid

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Mighty Max Battery ML8-12 - 12V 8AH Replacement for APC Back-UPS ES 500 Battery is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Mighty Max Battery ML8-12 - 12V 8AH Replacement for APC Back-UPS ES 500 Battery
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