Solar LED Street Lights
Secondary Battery Solutions
Solar LED Street Lights
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Why 2B4G Solar LED Street Lights

2B4G Li-ion Battery and related components located within the Luminaire
• Li-ion battery, Controller, Level Meter, GPS Sensor (Dimming System), Heatsink all imbedded within the light head.
• No external distributor box required
• No underground battery and/or controller burying required
• Li-ion Battery Theft-Proof
• High Efficiency (Over 150 Lm/W)
Superior Battery System
• 2B4G Superior Lithium Polymer Battery
• Safe with supreme heat dissipation
• Z-Fold Stacking & Special Coating method - reduces internal resistance
• Exceptional life cycle and high discharge rate capability - 4,000 cycles
• High efficiency performance
Superior 3rd Generation MPPT Controller System
• GPS tracking On/Off Dimming System - Programmable 10 levels
• No external distributor box required
• Built-in system that can recharge battery under minimal sunlight
• Built-in Battery Wake-Up function to recharge abnormally discharged dead battery
• Built-in Battery Management System (BMS) - improve system efficiency and battery lifespan
Simple Design & Structures
• Consists only three parts: - Luminaire, PV Panel, Post
• Simple Installation, Operation and Maintenance
• Affordable Cost
Sunless Days : 4~5 days
• Superior Li-ion Battery & Controller technology
• Superior Performance
Optional : Solar Flex PV Modules
• Flexible but Powerful PV Modules - annual power generation 15~35%
• 1/4 lighter compared to conventional PV
• Unbreakable PV panel
• Less affected by surrounding environment
- Flexible PV to prevent dust and sands
- Less temperature & environmental degradation

and much more…

No SOC required Huge Cost Savings No Cable Cost, No Cable Theft
- No need to dig trenches for wires, thus, no need to pay for them. – Overall savings in Installation, Operation and Maintenance - simply put, no external wires to steal
No Interdependency Weakness Pollution reducing Risk of accident minimized
- No need for electricity power supply - Clean Green Solar Energy - no electrical accidents

PV Modules
Flexible PV Modules (partnered with Solar Flex)

Specifications

Custom design & manufacturing available to match Client’s needs

ParametersFlexible Type
Capacity Rating (Pmax) 150W 250W
Tolerance of Pmax (%) +/-5% +/-5%
Module aperture area Efficiency (%) 14.5% 14.5%
Rated Voltage (Vmpp) 19.52 32.72
Rates Current (Impp) 7.80 7.80
Open Circuit voltage (Voc) 24.78 41.52
Short Circuit current (Isc) 8.73 8.73

Measured at (STC) Standard Test Condition : 25 °C , 1kWm2 insolation, AM 1.5

PV Module options

PV Module options

Benefits of Flexible PV Module

  • Flexible but Powerful PV Modules - annual power generation 15~35%
  • 1/4 lighter compared to conventional PV
  • Unbreakable PV panel
  • Less affected by surrounding environment
  • - can curve/angle PV to prevent dust and sands from remaining on top
  • - Less temperature & environmental degradation

Controller

  • 3C technology - Charger, Convertor(DC/DC dimming convertor), and smart Controller.
  • Built-in BMS(Battery management system) to improve system efficiency and prolong the life span of the battery.
  • Adaptive multi-step charging system to improve the charging performance and to protect battery from over-charging and abnormal
  • discharging.
  • Automatically manage Solar Panel and Battery operations
  • Dimming set up interfacing with GPS sensor. Setup configurable per customer preferences and/or dimming plan adjustable per
  • installation location.
  • Built-in Battery Wake-Up function

LED System

  • LED Engines (Korea Standard)
  • 21.2 W Power Consumptions per LED Engines
  • Luminous Flux : 2,900 lm per LED Engines
  • Efficiency : 144 lm/W per LED Engines
  • CRI: 75 Ra
  • CCT: 5,000K, 5,700K

Solar LED Street Lights (partnered with Attotek)
SL40 Series

Specifications

Model Lamp Design Criteria Capacity
LED Power( W ) Autonomy
Non Sunny
Days
LED Dimming
Control
Function
LED Power
Consumption
/Day(Wh/Day)
Li-ion
Battery
( kWh )
±100Wh
PV
Module
( Wp )
±20W
Lighting Efficiency /
Lumen
(Lm)
SL40 40 4~5 OK 260 0.47 130 110 Lm/W
4000~5000 Lm
Lighting
parameters
LED Power 40W
Lighting Efficiency / Lumen 110Lm/W 4000~5000Lm
Led Brand Elcomtech
CCT 5000K
Light Distribution Batwing
Viewing Angle 120º
CRI >75Ra
Light Control Voltage >DC30V
Physical
parameters
Solar Panel 130W
Li-ion Battery (Located inside the Luminaire 0.47kWh
Control Mode MPPT Solar Battery Charging Controller
Charging Time 5~6Hrs
Discharging Time 12Hrs/Night, Continue 4~5 Days
Material of light head Aluminum alloy
Average Life span 2 Years
Sensor (GPS – Dimming Sensor) GPS (On/Off Time )

Optional Features

Model # Components
SL40-SPNP Li-ion Battery + Controller + 2 Modules LED Engines + PV Modules
SL40-FPNP Li-ion Battery + Controller + 2 Modules LED Engines + Flexible PV Modules
SL40-NPNP Li-ion Battery + Controller + 2 Modules LED Engines

Light Distribution

Polar Distribution

Dimensions & Weight

Warranties

General Product Warranty 2 years
PV Module General : 10 years Flexible : 5 years
Battery 2 years
LED Light Source 2 years

Application fields

  • Park road
  • Walkway
  • One way road
  • Security vulnerable road
  • and much more…

Superior Lithium Polymer Battery
SLPB40 Series

Specifications

Model SLPB40
Energy 0.47 kWh
Rated Capacity 32 Ah
Cell Configuration 2P4S
Nominal Voltage 14.8 VDC
Size (APPR) 235(l) x 100(w) x 71.3(h)
Weight (APPR) 3 kg
Battery Warranty 2 years

Application to 2B4G SL40 System

Solar LED Street Lights (partnered with Attotek)
SL75 Series

Specifications

Model Lamp Design Criteria Capacity
LED Power( W ) Autonomy
Non Sunny
Days
LED Dimming
Control
Function
LED Power
Consumption
/Day(Wh/Day)
Li-ion
Battery
( kWh )
±100Wh
PV
Module
( Wp )
±20W
Lighting Efficiency /
Lumen
(Lm)
SL75 75 4~5 OK 600 1.06 260 154 Lm/W
11,551 Lm
Lighting
parameters
LED Power 75W
Lighting Efficiency / Lumen 154Lm/W 11,551Lm
Led Brand Elcomtech
CCT 5000K
Light Distribution Batwing
Viewing Angle 120º
CRI >75Ra
Light Control Voltage >DC30V
Physical
parameters
Solar Panel 260W
Li-ion Battery (Located inside the Luminaire 1.06kWh
Control Mode MPPT Solar Battery Charging Controller
Charging Time 5~6Hrs
Discharging Time 12Hrs/Night, Continue 4~5 Days
Material of light head Aluminum alloy
Average Life span 2 Years
Sensor (GPS – Dimming Sensor) GPS (On/Off Time )

Optional Features

Model # Components
SL75-SPNP Li-ion Battery + Controller + 4 Modules LED Engines + PV Modules
SL40-FPNP Li-ion Battery + Controller + 2 Modules LED Engines + Flexible PV Modules
SL40-NPNP Li-ion Battery + Controller + 2 Modules LED Engines

Light Distribution

Polar Distribution

Dimensions & Weight

Warranties

General Product Warranty 2 years
PV Module General : 10 years Flexible : 5 years
Battery 2 years
LED Light Source 2 years

Application fields

  • Highways and Freeways
  • Motorways
  • Overpass roads
  • Security vulnerable road
  • and much more…

Superior Lithium Polymer Battery
SLPB75 Series

Specifications

Model SLPB75
Energy 1.06 kWh
Rated Capacity 48 Ah
Cell Configuration 2P6S
Nominal Voltage 22.2 VDC
Size (APPR) 290(l) x 138(w) x 88.3(h)
Weight (APPR) 7 kg
Battery Warranty 2 years

Application to 2B4G SL75 System