CSB HR1218W High-Rate 12V VRLA Battery

Product Features

Valve Regulated Lead Acid (VRLA) design
AGM (Absorbent Glass Mat) technology with maintenance-free operation and up to 99% gas recombination efficiency
Pure lead construction with proprietary formulation elements
Engineered for high-rate UPS and float standby power applications
Manufactured to IEC 61056-1/2:2012 and UL1989 certified (MH14533)

Application Scenarios

UPS systems for server racks
Backup power solutions for small and medium data centers
UPS backup power for medical imaging equipment
Emergency power protection for network equipment rooms
UPS backup support for precision laboratory instruments
High-rate discharge for industrial control UPS

Product parameters

Model：HR1218W
Voltage：12 Vdc
Nominal Capacity：18W @15min-rate
Watts per Cell：38.1 (5-Min 1.67 VPC @ 25°)
Watts per Cell：17.8 (15-Min 1.67 VPC @ 25°)
Max. Charge Current：1.80 A
Max. Discharge Current：130 A
Internal Resistance：28.5 mΩ
Terminal Type：F2 terminal (Faston Tab 250)
Container Material：ABS (UL 94-HB) standard, flame-retardant (94-V0) available upon request
Weight：1.53 / 3.37 kg / lb.
Length (L)：150.9±2.0 / 5.94±0.08 mm / in
Width (W)：51.0±1.0 / 2.01±0.04 mm / in
Height (H)：98.6±1.0 / 3.88±0.04 mm / in
Design Life：Up to 5 years in standby service at 25°C; Eurobat (20°C): 3-5 years, Standard Commercial
Float Charging Voltage：13.5 - 13.8 Vdc/battery
Equalizing Charging Voltage：14.4 - 15.0 Vdc/battery
Operating Temperature：discharge -15°C to 50°C; charge/storage -15°C to 40°C

Product details

The HR1218W is part of CSB's HR series and is a 12V VRLA battery featuring a pure lead construction, specifically designed for high-rate discharge scenarios. It is officially positioned for small-output UPS systems and backup power applications requiring rapid discharge. Its nominal capacity is rated at 18W for the 15-minute rate at 1.67 VPC @25°C; the 5-minute rate power reaches 38.1 W/cell, while the 15-minute rate power is 17.8 W/cell, making it suitable for backup power environments requiring high power output over short durations. This battery utilizes a valve-regulated sealed lead-acid structure with absorbed glass mat technology, achieving gas recombination efficiency of up to 99%, and is maintenance-free. Both positive and negative plates are made with pure lead and a proprietary formula, helping to enhance high-rate discharge performance. The case material is ABS, meeting UL 94-HB flame retardant requirements, with a 94-V0 flame retardant version also available upon request. Internally, it complies with IEC 61056-1/2:2012 standards and holds UL1989 recognition. In terms of electrical specifications, the HR1218W has a nominal voltage of 12 Vdc, maximum charge current of 1.80 A, maximum discharge current of 130 A, and internal resistance of 28.5 mΩ. The float charge voltage range is 13.5 to 13.8 Vdc/battery (25°C), and the equalization charge voltage is 14.4 to 15.0 Vdc/battery (25°C). Terminals are F2-Faston Tab250. At 25°C, the self-discharge rate is less than 10% after 90 days, and it can be stored for up to 6 months, requiring a full charge before use; if storage temperature exceeds 25°C, earlier charging is required. Regarding dimensions and weight, the battery measures 150.9±2.0 mm in length, 51.0±1.0 mm in width, and 98.6±1.0 mm in height, weighing approximately 1.53 kg. Operating temperature range: nominal 25°C, discharge from -15°C to 50°C, and charge and storage from -15°C to 40°C. Design life is up to 5 years under float charge at 25°C; according to Eurobat standards, 3 to 5 years at 20°C. The HR1218W is primarily used in data center uninterruptible power supply systems, providing short-duration high-rate backup power for critical loads. Its maintenance-free characteristics and compact size make it easy to integrate into space-constrained UPS cabinets. It must be operated within the specified charge voltage and temperature ranges to ensure performance and longevity.