12V 3500W VRLA-AGM Battery XPL3500 CSB Data Center UPS

Product Features

Valve-regulated lead-acid (VRLA) design
Absorbent glass mat (AGM) technology, maintenance-free with up to 99% gas recombination efficiency
Pure lead plates with proprietary elements
Engineered for high-rate UPS and float standby power applications
Manufactured to IEC 60896-21/22:2004 and UL1989 certified (MH14533)

Application Scenarios

Long-duration standby power for large equipment rooms
Long-runtime UPS backup for data centers
Long-runtime backup for financial systems
Long-discharge backup for industrial UPS
Long-runtime UPS for medical centers
Long-duration standby power for communication hubs

Product parameters

Model：XPL3500
Voltage：12 Vdc
Nominal Capacity：3500W @5min-rate
Watts per Cell：862.33 (30-Sec 1.67 VPC @ 25°C)
Watts per Cell：558.00 (5-Min 1.67 VPC @ 25°)
Watts per Cell：318.67 (15-Min 1.67 VPC @ 25°)
Max. Charge Current：29.20 A
Max. Discharge Current：750 A
Short Circuit Current：2206 A
Internal Resistance：3.83 mΩ
Terminal Type：I2 thread lead alloy terminal to accept M6 bolt
Terminal Torque：51.7±10.3 Kgf·cm / 44.9±9.0 Lbf·in / 5.1±1.0 N·m
Container Material：PP (UL 94-HB) standard, flame-retardant (94-V0) available upon request
Weight：25.80 / 56.86 kg / lb.
Length (L)：261.0±2.5 / 10.28±0.10 mm / in
Width (W)：168.5±2.0 / 6.63±0.08 mm / in
Height (H)：213.5±2.5 / 8.41±0.10 mm / in
Design Life：Up to 10 years in standby service at 25°C; Eurobat (20°C): >12 years, Very Long Life
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

Part of the XPL series, the CSB XPL3500 is a 12V top-terminal VRLA battery. It uses Absorbent Glass Mat (AGM) technology with a gas recombination efficiency of up to 99% and is fully maintenance-free. The series sits within the high-capacity pure lead VRLA line, aimed at long-duration backup scenarios requiring large-format single cells, with data center UPS systems as the official designated application. In terms of power ratings, at 25°C and 9.60V per cell, the XPL3500 has a nominal capacity of 3500W @5min-rate. Per-cell power output is 862.33 W/cell at 30 seconds to 1.67 VPC, 558.00 W/cell at 5 minutes to 1.67 VPC, and 318.67 W/cell at 15 minutes to 1.67 VPC. Maximum charge current is 29.20 A, maximum discharge current is 750 A, short-circuit current is 2206 A, and internal resistance is 3.83 mΩ. Dimensions are 261.0±2.5 mm long, 168.5±2.0 mm wide, and 213.5±2.5 mm high, with a weight of 25.80 kg. The terminal is an I2 threaded lead alloy type, compatible with M6 bolts, with a terminal torque of 51.7±10.3 Kgf∙cm, equivalent to 44.9±9.0 Lbf∙in or 5.1±1.0 N∙m. The case is made of PP (UL 94-HB), with a flame-retardant (94-V0) version available on request. For charging and temperature conditions, at 25°C the float voltage is 13.5 to 13.8 Vdc/battery and the equalize voltage is 14.4 to 15.0 Vdc/battery. Nominal operating temperature is 25°C, the discharge temperature range is -15°C to 50°C, and the charge and storage temperature range is -15°C to 40°C. For self-discharge, storage at 25°C for 90 days results in less than 10% loss; storage is possible for up to 6 months, extendable to 10 months with equalizing charge. A full charge is required before use, and if storage temperature exceeds 25°C, recharge is needed sooner. In terms of design life, float standby service at 25°C reaches 10 years, and under Eurobat (20°C) conditions it exceeds 12 years, placing it in the Very Long Life category. The product is manufactured to IEC 60896-21/22:2004 and is UL1989 recognized (MH14533). With these characteristics, the XPL3500 is well suited to data center UPS and other applications requiring long-duration float standby power.