CSB MSJ-300 Telecom Battery VRLA-AGM 2V 300Ah

Product Features

The battery is a valve-regulated lead-acid (VRLA) type
Gas recombination efficiency up to 99%, using AGM (Absorbent Glass Mat) technology, and maintenance-free in normal use
Pure lead is used in the construction, with proprietary elements also added
High-capacity float standby power is its main design objective
Manufacturing complies with IEC 60896-21/22:2004; also recognized to UL1989 (MH14533)

Application Scenarios

DC power backup for communication base stations
Central office backup for fiber access networks
DC power supply for microwave relay stations
48V DC systems in telecom equipment rooms
Backup power for broadband access equipment
Mobile communication core network backup

Product parameters

Model：MSJ-300
Voltage：2 Vdc
Nominal Capacity：300 Ah @10hr-rate
Ah Capacity：304.00 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：314.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：296.00 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：90.00 A
Max. Discharge Current：1800 A
Short Circuit Current：5075 A
Internal Resistance：0.33 mΩ
Terminal Type：I4 thread copper alloy terminal to accept M8 bolt
Terminal Torque：126±25 Kgf·cm / 109±22 Lbf·in / 12.3±2.5 N·m
Container Material：Flame-retardant ABS (UL 94-V0)
Weight：21.80 / 48.05 kg / lb.
Width (W)：150.0±1.5 / 5.91±0.06 mm / in
Height (H)：339.0±2.5 / 13.15±0.10 mm / in
Depth (D)：170.0±2.0 / 6.69±0.08 mm / in
Design Life：Up to 20 years in standby service at 25°C; Eurobat (20°C): >12 years, Very Long Life
Float Charging Voltage：2.21 ~ 2.25 Vdc/battery
Equalizing Charging Voltage：2.35 Vdc/battery
Operating Temperature：discharge -15°C to 50°C; charge/storage -15°C to 40°C

Product details

The MSJ-300 has a nominal capacity of 300Ah, corresponding to 25°C, 1.80VPC, and the 10-hour rate. If the ambient temperature is also 25°C, the capacity can reach 304.00Ah at the 8-hour rate and 1.75VPC, 314.00Ah at the 20-hour rate and 1.75VPC, and 296.00Ah at the 8-hour rate and 1.80VPC. In terms of electrical characteristics and internal resistance, this battery has an internal resistance of 0.33mΩ, a short-circuit current of 5075A, a maximum discharge current of 1800A, and a maximum charge current of 90.00A. Structurally, the MSJ-300 uses pure lead with proprietary formulation elements, and the case is made of flame-retardant ABS (UL 94-V0). The terminals are I4 threaded copper alloy terminals, compatible with M8 bolts, with terminal torque of 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. The total weight is 21.80kg, and the dimensions are width 150.0±1.5mm, height 339.0±2.5mm, and depth 170.0±2.0mm. Charging and temperature conditions: the float charge voltage at 25°C is 2.21 to 2.25Vdc/battery, and the equalize charge voltage is 2.35Vdc/battery; nominal operating temperature is 25°C, discharge temperature range is -15°C to 50°C, and charge and storage temperature range is -15°C to 40°C. For self-discharge, it is below 10% after 90 days of storage at 25°C, and it can be stored for up to 6 months; it must be fully charged before use, and if the storage temperature is above 25°C, charge it sooner. The MSJ-300 is a 2V valve-regulated sealed lead-acid battery in the MSJ series, using AGM absorbent glass mat technology, with gas recombination efficiency up to 99%, and a maintenance-free design. It is mainly intended for large-capacity float standby power applications such as telecommunications, and is officially positioned as a 2V high-capacity long-life telecom battery with a service life of up to 20 years under 25°C float charge conditions. This product is manufactured in accordance with IEC 60896-21/22:2004 and approved under UL1989 (MH14533). Its design life is 20 years under 25°C float charge conditions, and per the Eurobat (20°C) standard it falls into the Very Long Life category of greater than 12 years, suitable for applications such as telecommunications that require long-term float standby.