Which form factor and mounting configuration fits your deployment?

The SRT2200RMXLA occupies 2U of rack space, mounts horizontally, and is explicitly rated for rack deployment. Its Dimensions field reports 3.35 in (8.5 cm), consistent with a 2U rack profile. Mounting mode is listed as 'Rack-mounted,' mounting position is Horizontal, and Two Post Mountable is listed as 0, indicating four-post or enclosure mounting only.

The SRT2200XLA is a tower unit with a vertical mounting position and is explicitly listed as 'Not rack-mountable.' Its Dimensions field reports 17.01 in (43.2 cm), reflecting a tower footprint. It requires floor or shelf space rather than rack real estate. Neither unit supports two-post rack mounting per spec.

For data closets, server rooms, or any environment with standard 19-inch rack cabinets, only the SRT2200RMXLA is appropriate. For standalone deployments — edge locations, wiring closets without racks, or desktop-adjacent installs — the SRT2200XLA is the correct physical fit. There is no documented rack-conversion kit referenced in either spec set.

How do bypass design and environmental operating limits differ between models?

Bypass type is the only documented electrical architecture difference between the two units. The SRT2200RMXLA specifies 'Built-in Bypass,' while the SRT2200XLA specifies 'Internal Bypass (Automatic and Manual).' The SRT2200XLA's spec explicitly calls out both automatic and manual bypass capability; the SRT2200RMXLA's spec does not enumerate automatic vs. manual modes, so buyers requiring confirmed manual bypass should verify with the manufacturer.

Storage temperature range differs: the SRT2200RMXLA is rated -4 to 122°F (-20 to 50°C) for storage, while the SRT2200XLA is rated 5 to 113°F (-15 to 45°C). The rack model tolerates a wider storage temperature swing — 9°F colder lower bound and 9°F higher upper bound — which may matter for units stored in unconditioned environments before deployment.

Acoustic level is specified only for the SRT2200RMXLA at 55 dBA; the SRT2200XLA spec does not include an acoustic rating. Operating humidity (0–95% non-condensing), operating altitude (0–10,000 ft), IP rating (IP20), and heat dissipation (535 Btu/h) are identical across both models.

Are battery runtime, expandability, and management options equivalent across both models?

Core battery specifications are identical: 72V battery voltage, 306 VAh internal runtime, 3-hour typical recharge time, 102W charge power, Lead-Acid chemistry, 3–5 year battery life, and the same replacement battery references (APCRBC141, SRT72RMBPUS). Both units include 1 battery module and have 1 free expansion slot.

Runtime extension battery options differ by accessory model number. The SRT2200RMXLA lists rackmount battery packs (SRT72RMBP) with capacities from 916 VAh (1 pack) up to 6,426 VAh (10 packs). The SRT2200XLA lists tower battery packs (SRT72BP) with capacities from 918 VAh (1 pack) up to 6,426 VAh (10 packs). The first-pack VAh differs slightly (916 vs. 918) per spec; maximum extended runtime capacity is identical at 6,426 VAh with 10 packs. Battery pack accessories are not cross-compatible between form factors based on differing model numbers.

Network management is optional on both models — 'Network management card (2 or 3) with environmental monitoring' — and alarms are described identically as 'Audible and visible alarms: prioritized by severity.' Power module count (1400), free slots (0 filled, 0 empty power module slots), and maximum configurable power (1800W / 2200VA) are identical.

Which should you choose: the SRT2200RMXLA or the SRT2200XLA?

Our take: The SRT2200RMXLA is the stronger choice when the deployment site includes a standard 19-inch equipment rack and rack-space efficiency is a priority. The two units share identical power ratings (2200VA / 1800W), UPS topology (double-conversion online), output connections ((6) NEMA 5-20R + (1) NEMA L5-20R), battery capacity (306 VAh, 72V), recharge time (3h), and maximum runtime extension (6,426 VAh with 10 battery packs). The rack model adds a wider storage temperature tolerance (-20 to 50°C vs. -15 to 45°C) and a documented acoustic rating (55 dBA, absent on the tower). The SRT2200XLA's bypass specification explicitly names both automatic and manual modes — the rack model's spec does not enumerate this — making the tower preferable where confirmed manual bypass is a procurement requirement. Choose the SRT2200RMXLA for rack-dense server rooms or colocation environments; choose the SRT2200XLA for standalone edge or floor-standing deployments where rack infrastructure is unavailable.

Side-by-Side Comparison

Spec-for-spec, from manufacturer data.

Frequently Asked Questions

Related Resources

• APC by Schneider Electric SRT2200RMXLA product page — full specs and to add to a quote
• APC by Schneider Electric SRT2200XLA product page — full specs and to add to a quote