CSB Battery MSJ-650 2V 650Ah Valve Regulated Sealed Lead Acid Type
As a 2V VRLA-AGM battery in the MSJ series, the CSB MSJ-650 provides 650Ah nominal capacity at the 10-hour rate, primarily serving telecom float charge backup power. This product utilizes a pure lead construction and AGM gas recombination technology, with a design float charge life of up to 20 years.
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Product Features
- Battery designed with VRLA (Valve Regulated Lead Acid) technology
- Equipped with Absorbent Glass Mat (AGM) technology, maintenance-free, with gas recombination efficiency up to 99%
- Constructed with pure lead and proprietary element formulation
- Specifically engineered for high-capacity float charge backup power applications
- Manufactured to IEC 60896-21/22:2004 standards, UL1989 certified (MH14533)
Application Scenarios
- Provides DC backup power for telecom base stations
- Serves as emergency backup at fiber access network central offices
- Powers microwave relay stations via DC supply
- Suitable for 48V DC systems in telecom equipment rooms
- Configures backup power for broadband access equipment
- Backup power scenarios for mobile communication core networks
Product parameters
- Model：MSJ-650
- Voltage：2 Vdc
- Nominal Capacity：650 Ah @10hr-rate
- Ah Capacity：658.40 (8-Hr 1.75 VPC @ 25°C)
- Ah Capacity：682.00 (20-Hr 1.75 VPC @ 25°C)
- Ah Capacity：640.80 (8-Hr 1.80 VPC @ 25°C)
- Max. Charge Current：195.00 A
- Max. Discharge Current：3900 A
- Short Circuit Current：13235 A
- Internal Resistance：0.26 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：46.60 / 102.71 kg / lb.
- Width (W)：171.0±2.0 / 6.73±0.08 mm / in
- Height (H)：339.0±2.5 / 13.15±0.10 mm / in
- Depth (D)：307.0±2.5 / 12.09±0.10 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
As a member of the MSJ series, the CSB MSJ-650 is a 2V Valve Regulated Sealed Lead Acid Battery, with its technical core being the AGM Absorbent Glass Mat, achieving gas recombination efficiency of up to 99%. It is officially positioned as a high-capacity, long-life telecom float charge backup power source. In terms of nominal capacity, it is 650Ah at 25°C, 1.80VPC, 10-hour rate; at the same temperature, the 1.75VPC 8-hour rate capacity is 658.40Ah, the 1.75VPC 20-hour rate capacity is 682.00Ah, and the 1.80VPC 8-hour rate capacity is 640.80Ah.
From an electrical characteristics perspective, the MSJ-650 has a float charge voltage range of 2.21 to 2.25Vdc at 25°C, and an equalization voltage of 2.35Vdc. The maximum charge current is 195.00A, the maximum discharge current is 3900A, the short-circuit current is 13235A, and the internal resistance is only 0.26mΩ. This battery uses a pure lead construction and applies a proprietary element formula, features a maintenance-free design, and is mainly intended for high-capacity float charge backup power scenarios. Production follows the IEC 60896-21/22:2004 standard, and it has obtained UL1989 recognition (MH14533).
Structurally, the MSJ-650's case is made of flame-retardant ABS (UL 94-V0), equipped with I4 threaded copper alloy terminals, compatible with M8 bolts, and the terminal torque must be controlled at 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. The battery weighs 46.60kg (102.71 lb), with a width of 171.0±2.0mm (6.73±0.08 in), a height of 339.0±2.5mm (13.15±0.10 in), and a depth of 307.0±2.5mm (12.09±0.10 in).
Operating temperature conditions: nominal temperature 25°C (77°F), allowable discharge range from -15°C to 50°C (5°F to 122°F), and charging and storage must be between -15°C and 40°C (5°F to 104°F). Self-discharge performance: stored at 25°C for 90 days, self-discharge is less than 10%; can be stored for up to 6 months in a 25°C environment, but must be fully charged before use. If the storage temperature exceeds 25°C, charging is required in advance.
In terms of design life, the MSJ-650 can reach 20 years in float charge mode at 25°C, and meets the Eurobat (20°C) Very Long Life rating of greater than 12 years. This product is specifically designed for float charge backup power in the telecom field, and with its high capacity and long life characteristics, it can meet the needs of continuous backup power supply.
