APC APCRBC157 teardown

Inside: Not published
Wiring: 24 V, 2 pairs (assumed)
List price: not published
Cell size: unverified
Terminal: unverified
Evidence on cell count: unverified

What is inside the APCRBC157?

APCRBC157 holds a module whose cells APC does not publish, assumed rated 7 Ah, giving a 24 V bus. APC publishes the cell count. We inferred the count from its voltage and size. Both blocks carry the same current and should be replaced together. Check the label on your old blocks before ordering a replacement.

Every ledger row for APCRBC157
Field	Value	Quote	Source
oem title	APC Replacement Battery Cartridge 157 with 2	APC Replacement Battery Cartridge 157 with 2 Year Warranty	T1 se.com

Which UPS models use the APCRBC157?

Of the 35 models we track, APCRBC157 fits SMC1500-2UC. 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 APCRBC157
UPS	Rating	Serial condition
SMC1500-2UC	1440 VA / 900 W	all serials

Which bare cells replace the APCRBC157?

We don't link a bare cell for APCRBC157, because no source confirms its cell size and terminal. APC lists one lead-acid module and publishes no voltage, cell count or size for it. Measure your old blocks and read their labels, or buy the OEM cartridge, rather than trusting a generic listing.

Can LiFePO4 replace the APCRBC157?

We can't recommend LiFePO4 for APCRBC157. The cell layout and bus voltage are unverified. Showing a link would mean guessing about fit. Buy the lead-acid cell or a factory LiFePO4 UPS instead, and see our method page for how we test fit.

High-voltage and thermal safety

UPS battery bays carry high-current DC, up to about 60 A at full load on these models and more at cutoff. Inverter capacitors inside the case can stay charged after unplugging, so never open a unit beyond its battery door. A shorted or mismatched pack can overheat or start a fire. The manufacturers sell only sealed lead-acid replacement packs (APCRBC, RB, RBC) for these units, and we found no OEM approval for LiFePO4. BMS trip limits, series balance drift and 0 V lockout on 24 V drop-ins are modeled from published BMS current ratings, not from UL or OEM certification, and no qualified engineer has reviewed them. Figures are estimates, so check your own unit's label and manual.

How much does the APCRBC157 cost against bare cells?

We can't state a saving for APCRBC157. 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.