CSB GP1272 F2 12V 25W Sealed Lead Acid UPS Battery

Overview

The CSB GP1272 F2 is a 12 V valve-regulated lead-acid (VRLA) battery from the CSB GP Series, built with absorbent glass mat (AGM) technology and fitted with F2 Faston 250 top terminals. CSB lists this version on its datasheet as GP1272F2 (12V 25W), meaning it is rated by power: 24.5 W per cell for a 15-minute discharge to 1.67 V per cell at 25 °C. In the 151 x 65 x 99 mm case format that UPS manufacturers, alarm panel builders and emergency lighting makers widely use for 12 V batteries in the 7 Ah class, the CSB GP1272 F2 is one of the most common replacement batteries for small UPS units, fire alarm panels, access control and security systems.

Seven Star LLC supplies the CSB GP1272 F2 and other CSB batteries in Oman and across the GCC, with engineering support in Muscat. Facility teams, IT departments and fire and security contractors often search for a 12 V UPS battery by case size and terminal type when replacing a batch of cells, and we help confirm that the dimensions, terminal style and discharge rating of the CSB GP1272 F2 match the equipment being serviced.

Operating Principle of the CSB GP1272 F2

For general context, a VRLA AGM battery holds its electrolyte absorbed in glass fibre separators rather than as free liquid. During charging, oxygen produced at the positive plate migrates through the mat to the negative plate and recombines, so water loss is minimal and the battery does not need topping up. A pressure relief valve opens only if internal pressure rises abnormally. CSB states that the GP Series achieves gas recombination efficiency of up to 99 % and uses pure lead construction with proprietary elements, and the battery is designed for float service in standby power applications.

In standby service the CSB GP1272 F2 is held at a constant float voltage of 13.5 to 13.8 V per battery at 25 °C, which keeps it fully charged with very little current. CSB lists an equalising or cycle charging voltage of 14.4 to 15.0 V per battery and a maximum charge current of 2.5 A. When the mains fails, the UPS or panel draws on the battery: the datasheet shows, for example, 17.2 A for 10 minutes, 7.40 A for 30 minutes and 4.24 A for 60 minutes to a final voltage of 10.02 V (1.67 V per cell) at 25 °C. As a general rule for lead-acid batteries, available capacity falls at lower temperatures and service life shortens at higher temperatures, which matters for equipment rooms in a hot climate.

Engineering Design of the CSB GP1272 F2

The case of the CSB GP1272 F2 measures 150.9 mm long, 64.8 mm wide and 98.6 mm high, and the CSB GP1272 F2 weighs approximately 1.84 kg. The container is ABS to UL 94-HB, with flame-retardant UL 94-V0 material available on request. Terminals on the CSB GP1272 F2 are F2 type, Faston tab 250 (6.35 mm), which is the wider of the two common push-on terminal sizes; CSB notes that an F1 terminal version is also available, in which case the maximum discharge current is 100 A instead of 130 A. Internal resistance is approximately 25.8 mΩ and short-circuit current is 160 A.

CSB states a design life of up to five years in standby service at 25 °C, or three to five years under the Eurobat classification at 20 °C, in the Standard Commercial category. Operating temperature for discharge is −15 to 50 °C, and for charge and storage −15 to 40 °C. Self-discharge is less than 10 % after 90 days and the battery can be stored for up to six months at 25 °C, after which a full recharge is needed before use; storage above 25 °C requires earlier recharging. CSB builds the GP Series in accordance with IEC 61056-1/2:2012, and the datasheet lists UL1973 listing (MH66728), UL1989 recognition (MH14533) and an ISO 9001:2015 management system certified by TUV NORD.

Key Features

The datasheet highlights the following characteristics of the CSB GP1272 F2.

• Maintenance-free sealed AGM construction with gas recombination efficiency of up to 99 % means no water topping is needed.
• F2 Faston 250 terminals fit the push-on connectors used in many UPS and alarm panel battery harnesses.
• A power rating of 24.5 W per cell at the 15-minute rate suits the short runtimes typical of small UPS systems.
• The 151 x 65 x 99 mm case matches a very common 12 V battery format, simplifying replacement.
• Design life is up to five years in standby service at 25 °C.
• Low self-discharge of less than 10 % after 90 days supports keeping spare stock on the shelf.
• Built in accordance with IEC 61056-1/2:2012 with UL1973 and UL1989 marks.
• A flame-retardant UL 94-V0 container is available on request for installations that require it.

Industrial Applications

The CSB GP1272 F2 is used wherever a compact 12 V standby battery is needed: desktop and rack-mount UPS units in offices, banks and server rooms, fire alarm and voice evacuation panels, intruder alarm and access control panels, emergency lighting, gate and barrier controllers and small instrumentation cabinets on industrial sites in Muscat, Sohar and Salalah. Facilities managers often replace these batteries in sets during planned maintenance, so a consistent case size and terminal type across the site keeps spares simple.

Because ambient temperature has a strong effect on lead-acid battery life, panels and UPS units in Oman are best installed in air-conditioned rooms, and battery replacement intervals should be planned rather than left until a failure is discovered during an outage. Seven Star LLC supplies the CSB GP1272 F2, the higher-rate HR Series and other CSB models to contractors and end users in Oman and the GCC, and our team can help compare runtime tables when moving to a different battery for the same equipment.

Technical Specifications

The values below for the CSB GP1272 F2 are taken from the CSB GP1272F2 (12V 25W) datasheet.

Related Products

Other standby batteries on our site include the Yuasa NP12-12 12V 12Ah battery, the APC SMX120BP external battery pack and the EnerSys PowerSafe SBS EON VRLA battery for larger DC systems.

How to Order

To order the CSB GP1272 F2, send Seven Star LLC the quantity, the equipment it is going into and any requirement for a flame-retardant case. The CSB datasheet is available for download on this page, and our team in Muscat can confirm compatibility and suggest the higher-rate HR Series where longer UPS runtime is needed. Seven Star LLC supplies CSB batteries with engineering support across Oman and the GCC.