TEL12-150FT
Front-terminal VRLA battery designed for 19-inch telecom cabinets with 12-year design life and narrow profile for spa...
Product Overview
Description
The Narada TEL12-150FT is a front-terminal VRLA battery specifically designed for telecommunications cabinet installations.
The narrow 125mm width fits standard 19-inch racks while front terminals enable easy maintenance access without removing batteries.
With 150Ah capacity and 12-year design life, this battery provides reliable backup power for base stations and network equipment.
Product Series
TEL
Primary Application
Telecom base stations
Key Features
- Front terminal design for easy maintenance
- Narrow 125mm width for 19-inch racks
- 12-year design life for telecom applications
- Flame-retardant ABS case (UL94 V-0)
- Low self-discharge for long standby
- Wide operating temperature range
Specifications
| Capacity | 150Ah @ 10hr rate |
|---|---|
| Voltage | 12V |
| Dimensions | 551 x 125 x 311mm |
| Weight | 45kg |
| Terminal Type | Front M8 insert |
| Design Life | 12 years |
Applications
Telecom base stations
Electronic system design
Network equipment cabinets
Communication and interface
Outdoor enclosures
Electronic system design
UPS systems
Electronic system design
Emergency power
Electronic system design
FAE Expert Insights
"The TEL12-150FT is specifically designed for telecom cabinet applications and addresses the key challenges of space constraints and maintenance access. The front-terminal design is a game-changer for cabinet installations - technicians can perform voltage checks and maintenance without removing batteries from the rack, saving significant time and reducing risk of connection damage. The narrow form factor allows efficient use of 19-inch rack space. I've specified these batteries for numerous 4G and 5G base station deployments. The 12-year design life aligns well with typical telecom equipment refresh cycles. For outdoor cabinet applications, I recommend pairing with the high-temperature version for extended life in challenging climates."
Purpose-built for telecom cabinets with maintenance-friendly front-terminal design
— Kevin Zhao, BeiLuo
Frequently Asked Questions
How many TEL12-150FT batteries fit in a standard 19-inch rack?
The TEL12-150FT fits standard 19-inch (482mm) racks with 125mm width per battery. In a typical 800mm deep rack: 6 batteries fit side-by-side per shelf (6 x 125mm = 750mm, leaving room for mounting). With 311mm depth, standard 600mm deep racks can accommodate the batteries with cable clearance. Typical configurations: Small sites - 1 shelf (6 batteries = 72V 150Ah); Medium sites - 2 shelves (12 batteries = 48V 300Ah or 24V 600Ah); Large sites - multiple racks. The 551mm height (including terminals) allows multiple shelves per rack. Always maintain minimum 10mm spacing between batteries for air circulation.
Contact us for rack configuration recommendations and cabinet layout optimization.
What is the recommended charging voltage for the TEL12-150FT?
Recommended charging parameters for TEL12-150FT: Float voltage: 13.5-13.8V per battery at 25°C; Equalization voltage: 14.4-14.7V per battery; Temperature compensation: -3mV/°C per cell (total -18mV/°C per 12V battery). For 48V systems (4 batteries in series): Float: 54.0-55.2V; Equalization: 57.6-58.8V. Charging current limit: 0.3C (45A maximum). The telecom rectifier should be programmed with these values. High-temperature sites (> 30°C) should use temperature-compensated charging to prevent overcharging. The battery is compatible with standard telecom rectifiers from major manufacturers including Eltek, Eaton, and Huawei.
Contact us for rectifier programming guidelines and charging profile recommendations.
How do I perform maintenance on front-terminal batteries?
Front-terminal battery maintenance procedure: 1) Visual inspection - check for case damage, leakage, or swelling through cabinet window; 2) Voltage measurement - measure total string voltage and individual battery voltage using front terminals without removing batteries; 3) Connection check - verify torque on front terminals (M8: 15-20 Nm); 4) Temperature check - verify battery temperature is within range; 5) Impedance testing - use front terminals for conductance/impedance testing; 6) Cleaning - clean terminals and case with dry cloth if needed. The front-terminal design eliminates the need to remove batteries from rack for routine maintenance, significantly reducing maintenance time and risk of connection damage.
Contact us for maintenance procedures and testing equipment recommendations.
What is the expected service life in telecom applications?
Expected service life for TEL12-150FT in telecom: Ideal conditions (20-25°C, float charge, occasional discharge): 10-12 years; Moderate conditions (25-30°C, occasional cycling): 8-10 years; Challenging conditions (30-35°C, frequent cycling): 6-8 years. Factors affecting life: Temperature - every 10°C above 25°C approximately halves life; Cycling - frequent deep discharges reduce life; Charging - overcharging or undercharging accelerates aging; Maintenance - poor maintenance leads to premature failure. For sites with high temperatures, consider the HT (high-temperature) version. End of life is typically defined as 80% of rated capacity. Regular monitoring helps predict replacement needs.
Contact us for life prediction modeling based on your site conditions and operating profile.
Can the TEL12-150FT be used in outdoor cabinets?
The TEL12-150FT can be used in outdoor cabinets with considerations: Temperature - standard version rated for -20°C to +50°C operation; for consistently high temperatures (> 30°C average), use HT version; Humidity - battery case is sealed and suitable for humid environments; Ventilation - cabinet must provide adequate airflow to prevent heat buildup; Insulation - cabinet should be insulated in extreme climates; Heating - battery heating may be needed in cold climates (< -10°C). For outdoor applications, the battery should be installed in a weatherproof cabinet with IP rating appropriate for the environment. The front-terminal design is particularly advantageous for outdoor cabinets where access may be limited.
Contact us for outdoor cabinet design recommendations and climate-specific solutions.