CSB HR1234W 12V 34W High-Rate UPS Battery

Overview

The CSB HR1234W is a high-rate 12 V VRLA-AGM battery from the CSB HR Series, designed specifically for UPS systems that must deliver a lot of power over a few minutes. Its name reflects its rating: 34 W per cell at the 15-minute rate to 1.67 V per cell (CSB datasheet value 34.3 W). Compared with a standard general-purpose battery in the same case, the CSB HR1234W carries more active material and lower internal resistance, around 19 mΩ, so it supports higher discharge currents and longer UPS backup time without changing the battery compartment. Buyers often look for it when searching for a 12 V 9 Ah UPS battery, since it occupies the same 151 x 65 x 99 mm footprint as many 9 Ah-class batteries.

Seven Star LLC supplies the CSB HR1234W to IT managers, UPS service companies, system integrators and facility teams in Oman and across the GCC, with engineering support in Muscat. When a site replaces batteries in a rack UPS or a fleet of desktop units, choosing a high-rate cell such as the CSB HR1234W can noticeably extend runtime for the same load, and our team helps check that the charger settings and battery harness of the UPS suit it.

Operating Principle of the CSB HR1234W

A general point about UPS batteries is that they are discharged at high rates, typically for five to fifteen minutes, which is very different from the 10-hour or 20-hour rates used to quote amp-hour capacity. At high rates the voltage drop across internal resistance and the speed at which acid can reach the plate surfaces limit what a battery can deliver. High-rate designs address this with plate and grid geometry optimised for power. That is why CSB rates the CSB HR1234W in watts per cell at short discharge times, which maps directly onto the way a UPS draws power from its battery string.

The datasheet tables give a clear picture of the CSB HR1234W under load at 25 °C. To a final voltage of 10.02 V (1.67 V per cell) it delivers 40.7 A for 5 minutes, 24.5 A for 10 minutes, 17.8 A for 15 minutes, 10.2 A for 30 minutes and 5.82 A for 60 minutes. In constant power terms the same end voltage gives 438 W for 5 minutes, 277 W for 10 minutes, 206 W for 15 minutes and 119 W for 30 minutes per battery. Like other sealed AGM batteries, it recombines the oxygen generated during charging inside the cell, with CSB quoting recombination efficiency of up to 99 %, so it remains maintenance-free throughout its life.

Engineering Design of the CSB HR1234W

Physically the CSB HR1234W measures 150.9 x 64.8 x 98.6 mm and weighs approximately 2.50 kg, noticeably heavier than standard batteries of the same size, which reflects its higher active material content. The terminals are F2 Faston tab .250 push-on connectors. The container is ABS to UL 94-HB, with a flame-retardant UL 94-V0 option available on request. Maximum discharge current is 130 A, short-circuit current is 349 A and the maximum charging current is 3.40 A.

For float service, CSB specifies 13.5 to 13.8 V per battery at 25 °C and for equalising 14.4 to 15.0 V. Design life is up to five years in standby service at 25 °C, or three to five years in the Eurobat classification at 20 °C. Discharge is permitted from −15 to 50 °C, while charging and storage should be kept between −15 and 40 °C. Self-discharge stays below 10 % after 90 days, with storage up to six months at 25 °C before a refreshing charge is needed. The HR Series is built in accordance with IEC 61056-1/2:2012, is UL1973 listed (MH66728) and UL1989 recognised (MH14533), and is produced under an ISO 9001:2015 system certified by TUV NORD.

Key Features

The CSB datasheet identifies these strengths of the CSB HR1234W.

• High-rate design delivers 34.3 W per cell at the 15-minute rate and 73.0 W per cell at the 5-minute rate.
• Low internal resistance of approximately 19 mΩ supports high current with limited voltage drop.
• It shares the common 151 x 65 x 99 mm case, so it can upgrade runtime in existing UPS battery bays.
• F2 Faston .250 terminals suit the push-on battery leads used by most small and medium UPS models.
• Maintenance-free sealed AGM construction is designed for float service in standby power applications.
• Design life is up to five years in standby service at 25 °C.
• Low self-discharge, below 10 % in 90 days, makes it practical to hold replacement stock.
• Compliance with IEC 61056-1/2:2012, UL1973 and UL1989 supports equipment approvals.

Industrial Applications

The main application for the CSB HR1234W is in UPS systems: desktop and tower UPS in offices, rack-mount UPS for network cabinets and server rooms, UPS for point-of-sale terminals in retail chains, and UPS protecting PLC panels, SCADA RTUs and instrumentation on industrial and utility sites in Muscat, Sohar, Duqm and Salalah. Many rack UPS models use strings of these 12 V blocks, so the higher wattage of an HR battery translates directly into extra minutes of backup for orderly shutdown or generator start.

It is also used in telecom and security equipment where short, high-power discharges are expected, such as emergency communication systems and motorised gate controllers. Seven Star LLC supplies the CSB HR1234W and the general-purpose GP Series from CSB, as well as larger VRLA batteries, to customers in Oman and the GCC, and recommends replacing all batteries in a UPS string together so that cells age evenly.

Technical Specifications

The following data for the CSB HR1234W comes from the CSB HR1234W datasheet.

Related Products

For related backup power needs, see the APC SMX120BP Smart-UPS X external battery pack, the Yuasa NP12-12 sealed lead acid battery and the EnerSys PowerSafe DU battery for larger DC systems.

How to Order

To order the CSB HR1234W, tell Seven Star LLC the UPS make and model, the number of batteries per string and the quantity required. The CSB datasheet can be downloaded from this page, and our team in Muscat can help compare runtime against your current batteries. Seven Star LLC supplies CSB batteries with engineering support across Oman and the GCC.