FIAMM SD 15 2 V 280 Ah Flooded Cell

Name: FIAMM SD 15 2 V 280 Ah Flooded Cell | Seven Star LLC
Brand: FIAMM
SKU: SD 15

SD 15 is a 2 V flat-plate flooded cell from the FIAMM SD-SDH range, rated 280 Ah at the 10-hour rate to 1.80 volts per cell at 20 °C. The folder gives a 145 x 206 x 423 mm case holding 6.0 litres of electrolyte, with a typical weight of 26.3 kg including electrolyte.

A high-rate flooded cell for UPS, switchgear and oil and gas supplies

FIAMM describes the SD-SDH range as flat-plate flooded cells with a 15-year design life for applications that need high power in a short period: industrial UPS, utilities, industry, and oil and gas. The low-antimony plate design keeps water use down, and under normal float topping-up is required every three years.

SD 15 is the sixth of ten SD types, which run from SD 5 (80 Ah) to SD 23 (440 Ah) in 423 mm tall cases; the taller SDH series then starts at SDH 13 (480 Ah, 710 mm tall). With 280 Ah it fits mid-size switchgear and generator-start systems.

Characteristics given in the folder and the flooded manual

Flat positive and negative plates; transparent SAN container and microporous PVC separators.
Electrolyte specific gravity 1.27 kg per litre at 20 °C, higher than the 1.24 of the LM tubular range.
Topping-up every three years under normal float; self-discharge lowered by design.
Vent plugs with a ceramic part release gas on charge; a plain vent is available on some types.
Fully recyclable at end of life, and the cell is listed against IEC 60896-11 vented-type requirements.

Technical specification

Data printed for SD 15 in the SD-SDH folder

Parameter	Specification
Cell type	SD 15
Nominal voltage	2 V per cell
Nominal capacity, 10 h to 1.80 V per cell, 20 °C	280 Ah
Length x width x height	145 x 206 x 423 mm
Electrolyte quantity	6.0 litres
Typical weight with electrolyte	26.3 kg
Plate design	Flat positive, flat negative
Design life	15 years
Standard listed	IEC 60896 part 11 (vented types)

Values from the flooded engineering manual (range data)

Parameter	Specification
Float voltage at 20 °C	2.23 V per cell; about 0.3 mA per Ah float current
Boost charge	2.40 V per cell, limit 0.15 C10, stop at 0.001 C10 or 24 h
Terminal torque (flag post)	10 to 12 Nm, flag Ø 8.5 mm
Maximum storage before refresh	6 months at 10 °C, 3 months at 20 °C, 2 months at 30 °C
Initial charge of dry cells	0.10 C10 for 16 to 17 hours at 2.70 V per cell

Derived values (calculated here, not printed)

Parameter	Specification
String of 60 cells float voltage	60 x 2.23 = 133.8 V at 20 °C (120 V battery)
Ah to inject on first charge	1.6 to 1.7 x 280 = 448 to 476 Ah (manual rule)

Choosing SD 15 inside the SD series

SD 13 (240 Ah) and SD 15 (280 Ah) share the 145 mm width, so the rack tray is the same; SD 17 to SD 23 are 187 mm wide. Ten SD steps between 80 and 440 Ah let you size a string closely to the DC load without paralleling.

Electrolyte volume is printed per cell, so order or plan filling quantities from the folder when cells are delivered dry charged.

Filling, charging and installation notes from the manual

Dry-charged cells are filled with electrolyte to the MAX line after rack installation, rested about 3 hours, topped up if needed and put on charge within 18 hours. Record voltage, specific gravity and temperature of each cell first, and stop charging at 45 °C until the cell cools to about 35 °C.

Space cells 10 to 15 mm apart on acid-resistant racks, apply a thin layer of No-Oxide grease to cleaned connector surfaces, and keep the room between 10 and 30 °C, away from direct sunlight and open flames. Ventilation must be on during charging.

Where high-rate flooded cells fit in Gulf plants

The folder names industrial UPS, utilities, industry and oil and gas. In Oman that translates to substation DC supplies, compressor-station control batteries and generator starting. General engineering note: flooded cells need a ventilated battery room and water topping every three years, which suits attended sites better than unmanned remote shelters.

Related FIAMM items

LM and LM/S tubular OPzS cells give longer life in the same 206 mm deep trays, SGL-SGH are Planté cells with a 25-year design life, and FIAMM offers vent plugs, racks and remote venting accessories.

Battery room and maintenance notes

Flooded cells produce hydrogen during charging, so the battery room must be ventilated as required by the manual and the applicable standard, with no ignition sources near the cells. Battery life also depends strongly on temperature, so the room should be cooled in the region’s climate, and the charger’s float voltage and temperature compensation should be set as given in the manual.

Check the electrolyte level, specific gravity and cell voltages at the intervals in the manual, top up only with the specified water, and keep the cell tops clean and dry. Torque the connections to the stated values and recheck them during routine maintenance.

Information to send with an enquiry

System DC voltage and load profile
Required autonomy and number of cells
Racks, connectors and accessories
Quantity

Frequently asked questions

What capacity does SD 15 have?

280 Ah at 10 hours to 1.80 volts per cell and 20 °C.

How much electrolyte does it hold?

6.0 litres per cell according to the folder, with a specific gravity of 1.27 at 20 °C in the manual.

How often must it be topped up?

The folder says every three years under normal float conditions.

What float voltage is recommended?

2.23 volts per cell at 20 °C per the flooded manual.

Is the photo this exact cell?

No. It is the SD and SDH family render and the alt text states that.

Documents and quotation

The official FIAMM datasheet and user manual for SD 15 are hosted on this page for download. Seven Star LLC is an independent supplier in Muscat; send your quantity and delivery location through the quotation form and we will quote this item. Please confirm the exact order code, supply voltage and output options against the documents before ordering. More related products: product category.

Reserve power batteries for standby and storage

The FIAMM Reserve Power Solutions business supplies industrial batteries under ranges such as FG and FGL general-purpose AGM blocks, FIT, FHT2, FHB and FLB front and top terminal AGM batteries, SD, SDH, SGL, SGH and LM flooded cells, and SMG gel OPzV cells. Applications named on the site include data centres and UPS, telecom, industry and utilities, security and emergency, and renewable energy storage.

Frequently Asked Questions