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Two rectangular 6 volt 12 amp hour sealed lead acid batteries side by side

BatteryJack inc.

BatteryJack inc. D5736 UB6120 6V 12Ah 2-pack

SKU CH-RC76-QKBD6

Two 6 V 12 Ah sealed lead-acid batteries with AGM technology for UPS replacement

  • 6V 12Ah capacity powers UPS units reliably
  • Valve-regulated AGM design requires zero maintenance
  • Sealed lead-acid construction prevents leaks in any orientation
  • Two-battery pack enables quick dual-slot replacement
  • 4-7 year expected lifespan reduces replacement frequency

Two-pack 6 V 12 Ah UPS batteries

This product is a pack of two 6-volt 12 Ah sealed lead-acid batteries built with AGM technology for valve-regulated, maintenance-free operation. They are intended as direct OEM replacements for UPS units that specify the D5736 form factor. The batteries arrive ready to install without electrolyte handling.

Buyers replacing failed cells in compatible UPS

These suit administrators who need a like-for-like swap in a supported UPS and want a spare on hand. They do not suit installations that require a different voltage, a higher amp-hour rating, or a non-AGM chemistry. Systems needing hot-swappable modules or network-managed battery packs should look elsewhere.

6 V 12 Ah AGM specification

The decisive figure is the 6 V 12 Ah rating combined with AGM construction; the UPS charger and runtime calculations are built around those exact values. A different voltage or capacity will prevent correct charging and invalidate runtime estimates.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $34.99
Cheaper than about 55% of the 3,915 comparable items (median $39.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the UB6120 6 V 12 Ah battery use standard F2 terminals for UPS connections?

The UB6120 uses industry-standard F2 faston terminals that mate with typical UPS wiring harnesses.

Will the D5736 case dimensions match my existing UPS battery compartment?

The D5736 follows the standard 6 V 12 Ah footprint so it fits the same slot as the original pack.

What is the correct series wiring step that installers often reverse?

Connect the positive terminal of the first battery to the negative terminal of the second battery to achieve 12 V output.

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