Dropโin replacement cartridge built from a single 12โฏV, 3.5โฏAh AGM (VRLA) battery with F2 terminals. Re-use the wiring and plug-and-play connector.
Designed for compact APC Back-UPS systems, the RBC35 restores reliable backup power in models where space and power needs are minimal. Installation is quick, clean, and user-serviceable in under 5 minutes.
Compatibility โ APC RBC35
Compatible UPS Models
OEM RBC Part Number
APC Back-UPS ES 350
RBC35
APC Back-UPS ES 400
RBC35
APC Back-UPS CS 350
RBC35
Specifications โ Gruber Power Replacement
Parameter
Value
Voltage
12 V DC
Capacity
3.5 Ah
Battery Count
1 ร 12 V, 3.5 Ah
Terminal Type
F2 (0.25″) Faston
Battery Chemistry
AGM, Valve Regulated LeadโAcid (VRLA)
Installation
User-replaceable, plug-and-play
Why buy from Gruber
Always-fresh inventory โ High volume means packs donโt sit aging on a shelf.
Premium, recent-date cells for dependable runtime and performance.
Longest service life possible from fresh stock, correctly matched to your UPS.