APC APCRBC158 teardown

Inside
1 x 12 V 9 Ah
Wiring
12 V single
List price
not published
Cell size
151 x 65 x 94 mm
Terminal
F2
Evidence on cell count
verified

What is inside the APCRBC158?

APCRBC158 holds one 12 V block rated 9 Ah, giving a 12 V bus. APC publishes the cell count. There is no series string to balance, so it is the simplest swap here. Check the label on your old block before ordering a replacement.

FRONT ELEVATION: 1 x 12 V, 12 V DC BUSNEW CELLtabs F2+−RED TO UPS (+)BLACK TO UPS (−)each cell 151 x 65 x 94 mmPLAN VIEW, TO SCALE: CASE FORMATS151 mm65Standard 7-9 Ah (this page)CSB HR1234WF2, 94 mm case height151 mm51Slim 6 AhCSB HR1224WF2F1, 94 mm case height90 mm705 Ah cubeCSB HR1221WF2, 102 mm case heightFASTON TAB WIDTH, ENLARGEDF1 4.75 mm / 0.187"F2 6.35 mm / 0.250"
Every ledger row for APCRBC158
FieldValueQuoteSource
oem titleAPC Replacement Battery Cartridge #158 with APC Replacement Battery Cartridge #158 with 2 Year WarrantyT1 se.com
cell ah9Capacity: 9 AhT2 batterymart.com
envelope mm151 x 64 x 95(151mm x 64mm x 95mm)T2 batterymart.com

Which UPS models use the APCRBC158?

Of the 35 models we track, APCRBC158 fits BX1000M. That list comes from the manufacturer's pages, and they sometimes disagree with reseller listings. Where a model splits by serial number, its UPS page shows which prefix takes this cartridge, so check your label before you order.

Models on this site that use APCRBC158
UPSRatingSerial condition
BX1000M1000 VA / 600 Wall serials

Which bare cells replace the APCRBC158?

Replace APCRBC158 with one 12V 9 Ah F2 cell and reuse the factory harness. Battery Mart lists 151 x 64 x 95 mm for a compatible cell. The terminal comes from a retailer cross-reference or inference, so check your old cell first. Keep the old harness, because bare cells ship without leads.

Mighty Max ML9-12 12V 9Ah F2
Standard AGM, F2. The like-for-like choice.
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CSB HR1234WF2 12V 9Ah High Rate (the high-rate option)
High-rate AGM, F2. Holds up best at UPS discharge rates.
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Can LiFePO4 replace the APCRBC158?

A 12.8 V LiFePO4 pack fits the APCRBC158 bay, but its BMS sets the limit. A 12 A BMS allows about 118 W on this 12 V bus. A single pack has no series balance problem to manage. Measure your real load before you buy.

12.8V 10Ah LiFePO4, F1 terminal
Listing claims a 20 A BMS and doesn't say whether that is continuous.
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F1 to F2 terminal adapters, pair (2 adapters needed)
One pair covers one cell.
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At the listing's 20 A claim the ceiling is 197 W, and at 12 A it is 118 W. Why that matters.

How much does the APCRBC158 cost against bare cells?

We can't state a saving for APCRBC158. We found no published list price for it. A figure here would be invented, so this page leaves it out and points you to the sources we did check. Ask the manufacturer for current pricing.