Siemens 6EP1935-6ME21 SITOP 24 V/7 Ah battery module

Siemens 6EP1935-6ME21 is a SITOP 24 V/7 Ah battery module for compatible 6 A, 15 A, and 40 A DC UPS modules.

System function

Rebuilt from individual evidence

Evidence and limits

6EP1935-6ME21 is documented as a SITOP 24 V/7 Ah battery module using maintenance-free sealed lead-acid batteries.

It sits upstream of a compatible SITOP DC UPS module and supplies stored energy in the documented buffer path.

The operating instructions document fuse selection for 6/15 A and 40 A DC UPS combinations.

Unknown: battery condition, charge state, connected UPS model, load profile, runtime, wiring, and service status.

Exact reference: 6EP1935-6ME21
Category: PLC / CPU
Evidence checked: 2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function: Supplies stored 24 V DC energy to a compatible SITOP DC UPS module during buffer operation.
System position: Sits upstream of a compatible SITOP DC UPS module in its external energy-storage path.
Upstream / inputs: The compatible SITOP DC UPS module provides the documented battery connection and charging path.
Downstream / outputs: The battery module supplies stored energy to the downstream DC UPS module during buffer operation.
Limitations: Unknown: battery condition, charge state, connected UPS model, load profile, runtime, wiring, and service status.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Siemens identifies 6EP1935-6ME21 as a SITOP 24 V/7 Ah battery module with maintenance-free sealed lead-acid batteries.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
- www.manualslib.com — retrieved 2026-09-12; high confidence
Siemens specifies use with SITOP DC UPS modules rated 6 A, 15 A, and 40 A.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
The operating instructions document a battery-module fuse and distinguish fuse combinations for SITOP DC UPS modules rated 6/15 A and 40 A.
Confidence: high
- www.manualslib.com — retrieved 2026-09-12; high confidence

Inferences

The battery module sits upstream of a compatible SITOP DC UPS module in its external energy-storage path.
Confidence: high
Rationale: The exact battery identity, listed UPS compatibility, and documented fuse arrangement establish its upstream energy-storage position.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
- www.manualslib.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: battery condition, charge state, connected UPS model, load profile, runtime, wiring, and service status.
Confidence: low
Missing evidence: No unit inspection, connected UPS configuration, load, runtime, wiring, or service record was captured.

System position diagram

A compatible SITOP DC UPS module connects to the 6EP1935-6ME21 SITOP 24 V/7 Ah battery module, which supplies stored 24 V DC energy. — The Siemens documentation places this battery module on the external energy-storage path of a compatible DC UPS.

View Mermaid source

flowchart LR
  ups["Compatible SITOP DC UPS module"] -->|battery connection and charging path| battery["6EP1935-6ME21 SITOP 24 V/7 Ah battery"]
  battery -->|stored 24 V DC energy| ups

View diagram labels

Nodes: Compatible SITOP DC UPS module; 6EP1935-6ME21 SITOP 24 V/7 Ah battery
Edges: Battery connection and charging path; Stored 24 V DC energy

Next action

The captured Siemens documentation supports a concrete 24 V/7 Ah battery role for compatible SITOP DC UPS modules.

Confirm the connected DC UPS rating, fuse arrangement, battery condition, and required runtime before replacement.

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