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Rectangular black external battery pack for UPS

APC

APC BR24BPG 1500VA External Battery Pack UPS

SKU CH-3A6B-QD138 MPN BR24BPG

Extends runtime of a 1500VA UPS with four 9Ah lead-acid batteries, adding roughly 11 minutes at half load or 3 minutes at full load

  • Volt-ampere rating1500 VA
  • Power rating865 W
  • Battery typeLead Acid Battery
  • Runtime on batteryAt full load (865 W): The runtime can be extended from aroun
  • Extends runtime to 11 minutes at half load
  • Triples standard backup when paired with 1500VA UPS
  • Maintenance-free sealed lead-acid batteries last 4 to 6 years
  • Four 9Ah cells add 24Ah total capacity
  • Automatic recharge through UPS internal charger

Extended Runtime for Back-UPS Pro 1500VA

This external battery pack connects directly to the rear panel of compatible APC Back-UPS Pro 1500VA units. It adds four 9Ah sealed lead-acid modules to the two already inside the UPS, tripling the available backup capacity for connected equipment.

Maintenance-Free Operation

The sealed lead-acid batteries require no user servicing and recharge automatically through the UPS internal charger. Expected service life spans 4 to 6 years under normal conditions, providing reliable extended runtime without added noise or thermal load.

Sustained Load Runtime

At a full load of 865 W the combined battery set delivers approximately 24 minutes of runtime, up from roughly 3 minutes on the internal batteries alone. At half load of 432.5 W the runtime extends to around 11 minutes, supporting longer outages for critical devices.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $172.99
Cheaper than about 83% of the 1,153 comparable items (median $948.99).

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Specifications

Power
Volt-ampere rating1500 VA
Power rating865 W
Battery typeLead Acid Battery
Runtime on batteryAt full load (865 W): The runtime can be extended from around 3 minutes
At half load (432.5 W): The runtime can be extended from around 11 minutes
Size & build
Shipping weight13.70 kg
Package size488 × 399 × 239 mm

Questions about this item

How do I connect the BR24BPG to my Back-UPS Pro 1500VA, and which step is often missed?

Plug the pack into the dedicated rear-panel battery connector on the UPS; the step often missed is securing the connector latch so the pack stays firmly attached during movement.

When will the sealed lead-acid batteries inside the BR24BPG need replacement?

The manufacturer rates the expected battery life at 4 to 6 years; plan replacement when runtime noticeably drops below the 11-minute half-load or 3-minute full-load extensions.

What limits continuous operation first when the BR24BPG is powering a full 865 W load?

At 865 W the extended runtime is about 3 minutes, so battery capacity is the first limit reached under sustained full load.

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