6EP1935-6MF01 SITOP Battery 24 V/12 Ah | Siemens 6EP1935-6MF01

6EP1935-6MF01 SITOP Battery Module 24 V/12 Ah Overview

The 6EP1935-6MF01 is a SITOP battery module rated 24 V / 12 Ah. It uses sealed lead-acid batteries with no water topping. It pairs with SITOP DC UPS modules rated 6 A, 15 A, and 40 A. End-of-charge voltage follows temperature. It sits at 27.3 V at 20 °C. Max charging current is 3 A. A 20 A/32 V solid-state fuse protects against short circuit. The unit mounts flat with keyhole hooks for M4 screws. It weighs about 9 kg.

Technical Data

• Model: 6EP1935-6MF01
• Type: SITOP battery module 24 V/12 Ah
• Battery: sealed lead-acid, maintenance-free, 12 cells
• Compatible UPS modules: SITOP DC UPS 6 A, 15 A, and 40 A
• Max charging current: 3 A
• Short-circuit protection: battery fuse 20 A/32 V, solid-state blade type
• Overload protection design: valve control
• Protection class: Class III
• CE mark: Yes
• UL/cUL: cURus-Recognized, UL 1778, CSA C22.2 No. 107.1, File E219627
• Degree of protection: IP00
• Connection: spring-loaded terminals, +BATT and -BATT screw terminals 0.08–4 mm²
• Dimensions (W×H×D): 253 × 168 × 121 mm
• Installation width/height: 273 / 188 mm
• Weight: approx. 9 kg
• Accessory pack: solid-state fuse 20 A and 30 A

Charging Voltage by Temperature

• At 10 °C: 27.8 V recommended
• At 20 °C: 27.3 V recommended
• At 30 °C: 26.8 V recommended
• At 40 °C: 26.6 V recommended
• At 50 °C: 26.3 V recommended

Ambient and Service Life

• Operating temperature: -15 to +50 °C
• Transport temperature: -20 to +50 °C
• Storage temperature: -20 to +50 °C
• Self-discharge at 20 °C: about 3 % per month
• Service life at 20 °C: about 4 years to 50 % capacity
• Service life at 30 °C: about 2 years
• Service life at 40 °C: about 1 year
• Service life at 50 °C: about 0.5 year
• Storage advice: keep short, fully charged, 0 to +20 °C

Professional FAQ

• Q: Can I use this battery with any SITOP UPS?
  A: It matches SITOP DC UPS modules at 6 A, 15 A, and 40 A. Check your UPS manual before you buy.
• Q: Why does the charge voltage change with temperature?
  A: Lead-acid cells need lower voltage when warm. This prevents overcharge and plate damage.
• Q: How should I store a spare battery?
  A: Keep it fully charged at 0 to +20 °C. Store briefly, then recharge on a schedule.
• Q: How long does the battery last in a hot panel?
  A: Life drops fast with heat. At 40 °C expect about 1 year, so plan early replacement.
• Q: What fuse does the module use?
  A: A 20 A/32 V solid-state blade fuse. The accessory pack also includes a 30 A fuse.

Warranty, Lead Time and Shipping

• 12-month warranty on functional defects.
• Dispatch within 24–28 hours after order confirmation.
• Shipping by FedEx, UPS, and DHL.
• Shock protection and secure packing in every shipment.