
2–5W LED Emergency Power Packs – 1.5–3 Hours Duration Time
Engineered for global commercial projects, the EMAI EK05 features constant emergency power output (2–5W)-a critical advantage in egress scenarios. Its intelligent 20–300VDC wide-voltage design auto-adapts to various LED drivers, eliminating compatibility headaches. The unit includes automatic monthly and annual self-checks, reducing maintenance costs in offices, schools, and retail spaces across the UK, EU, Australia, and the Middle East. Thanks to advanced lithium battery integration, it achieves a reduced footprint without sacrificing runtime. Safety-first features include deep discharge protection and fault-responsive AC control: charging pauses during errors and resumes automatically once fixed. Certified to ENEC, CE, UKCA, CB, and C-tick. IP20 rated (via host fixture). 3-year warranty included.
Top Features and Benefits:

Constant power emergency

Self-check function

3 years warranty

ENEC certification

LiFePO4 battery
Wide 20–300V DC output works with almost any LED load.
Supports 1.5h or 3h backup using 18650/26650 LiFePO₄ batteries.
Reverse polarity protection prevents damage during battery install.
Compact size (126×38×22mm) fits easily into most luminaires.
Dual-color LED shows real-time status: green = normal, yellow = test/fault.
Application Scenario
Industrial Facilities: Ensures critical areas such as factories, warehouses, and production lines remain illuminated, preventing accidents and maintaining productivity during outages.

Product Advantages
1. Beyond CE: Real Safety Backed by ENEC & Global Certs
While many drivers carry only self-declared CE, the EK05 goes further with official ENEC certification, verified by accredited European testing bodies. This distinction signals superior build quality, electrical safety, and long-term reliability-key for specifiers and regulators. Backed by additional approvals including CB (IECEE), UKCA for Britain, and C-tick for Oceania, the EK05 eliminates certification hurdles and speeds up project deployment worldwide.
2.Built to Last, Designed to Comply
With a cycle life exceeding 3,000 charges and robust performance across diverse environments, this LiFePO₄ battery redefines longevity in energy storage. The built-in NTC thermistor actively safeguards against overheating during operation or charging, maintaining optimal efficiency between 0°C and 60°C. Fully assessed under the new EU Battery Regulation (EU) 2023/1542 (Compliance ID: 2IFpR19/66), it meets modern requirements for recyclability, carbon footprint transparency, and end-of-life responsibility-making it a future-proof choice for eco-conscious integrators.
Battery parameters
Different battery capacities correspond to different emergency power outputs and emergency durations.
A larger battery capacity enables higher emergency power and longer emergency operating time, which can be flexibly configured according to project requirements.
|
Single |
Side by side |
Column |
Emergency power (W) |
2W |
3W |
4W |
5W |
||||||
|
Emergency Duration (H) |
1.5 |
3 |
1.5 |
3 |
1.5 |
3 |
1.5 |
3 |
|||||
|
Battery type |
Structure |
Cell |
Size(L*W*H) |
Model |
|
|
|
|
|
|
|
|
|
|
26650 3.2V 4000mAH |
Single with fixed plate |
1*1 |
100*28*29 |
1140-02 |
★ |
★ |
★ |
★ |
|||||
|
26650 6.4V 4000mAH |
Side-by-side with fixed plates |
2*1 |
100*53*29 |
2140-02 |
★ |
★ |
|||||||
|
Column with fixing plate |
2*1 |
168*28*29 |
2140-03 |
★ |
★ |
||||||||
|
18650 6.4V 1600mAH |
Side-by-side with fixed plates |
2*1 |
100*38*21 |
2116-02 |
★ |
★ |
|||||||
|
Column with fixing plate |
2*1 |
168*21*21 |
2116-04 |
★ |
★ |
||||||||
|
18650 6.4V 2000mAH |
Side-by-side with fixed plates |
2*1 |
100*38*21 |
2120-02 |
★ |
★ |
|||||||
|
Column with fixing plate |
2*1 |
168*21*21 |
2120-03 |
★ |
★ |
||||||||
Figure 1: 26650 Single 3.2V 4000mAH

Figure 2: 26650 Side by side 6.4V 4000mAH

Figure 3: 26650 Column 6.4V 4000mAH

Figure 4: 18650 Side by side 6.4V 1600mAH

Figure5: 18650 Column 6.4V 2000mAH

Battery charging and discharging time
|
Model number |
6.4V/1600mAH |
6.4V/2000mAH |
6.4V/4000mAH |
3.2V/4000mAH |
|||||||
|
Emergency power |
2W |
4W |
3W |
5W |
4W |
5W |
2W |
3W |
4W |
5W |
|
|
Duration |
3H |
1.5H |
3H |
1.5H |
3H |
4H |
3H |
3H |
1.5H |
1.5H |
|
|
Battery charge time |
Initial charge |
24H |
|||||||||
|
Trickle charge |
Continuous and uninterrupted charging |
||||||||||
|
Charging current |
Initial charge |
100-250mA |
100-250mA |
||||||||
|
Trickle charge |
100-250mA/0mA |
100-250mA/0mA |
|||||||||
|
Discharge current |
400-1000mA |
800-2000mA |
|||||||||
|
Charging protection voltage |
7.3+/-0.5Vdc |
3.6+/-0.5Vdc |
|||||||||
|
End of discharge voltage |
5.5+/-0.2Vdc |
2.7+/-0.2Vdc |
|||||||||
|
Discharge protection voltage |
4.2Vdc |
2.1Vdc |
|||||||||
Emergency Function
This is a maintenance-type emergency device. When the main power is connected, the green charging indicator light should illuminate, indicating that the battery has been correctly activated. The light will remain on. When the power is interrupted, the device will enter emergency mode and the indicator light will also illuminate. Testing and inspection must comply with local operating regulations.
Self-check function:
1. Green LED status light on: Normal charging mode, 200 - 240 volt power connected.
2. Monthly test, test duration 15 seconds.
3. 6-month test, test duration 3 hours.
4. Self-check tests are subject to EN62034 regulations.
LED indicator functions:
Off: Normal state, waiting for the next test.
Slow flash 1: 2 seconds on/2 seconds off: Self-check test in progress.
Slow flash 2: 4 seconds on/1 second off: Most recent self-check test completed and passed (stops after 5 days).
Fast flash: 0.5 seconds on/0.5 seconds off: Fault, replace battery or retest the device.
|
|
Colour |
The indicator light shows |
Status |
Comment |
|
|
Green |
Permanent |
Normal charging mode |
220-240Vac Supply connected |
|
|
Green |
Slow flash |
charging |
220-240Vac Supply connected |
|
|
Yellow |
Slow Flash 1: |
Performing self-test |
1-Month test,Test duration 15s |
|
|
Yellow/ Green |
Slow Flash 2: |
Self-test recently performed and passed |
Stop after 5 days |
|
|
Yellow/ Green |
Fast Flash 1: |
1 or 6 Month test failure |
Low Battery test automatically. |
|
|
Red |
Fast Flash 2: |
Battery failure |
Battery failed the duration test or function test / No battery |
|
|
Red |
Permanent |
LED Breakdown |
220-240Vac Supply connected |
|
|
No |
Green off |
Emergency mode |
Battery operation (DC mode) |
Dimension


Wiring Diagram


Product Packaging

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Product Specifications
Input voltage ..............................................................................(Universal) 200-240 VAC, 50/60Hz
Input current(300V).........................................................................................................0.07A (max)
Output voltage .................................................................................................................20-300VDC
Output current ..................................................................................................Automatic adjustment
Output power........................................................................................................................5W(max)
The neutral current of the highest AC drive unit .....................................................................1Amps
Power factor ...................................................................................................................................0.5
Surge ....................................................................................................................................L-N 1KV
Emergency time ..........................................................................................................90/180 minutes
Operating temperature ......................................................................................................0° - 50° C
Total Harmonic Distortion .........................................................................< 10% (@ Fully charged)
EMI ................................................................................Compliant with the FCC commercial scope
Emergency mode protection ...............................................................Battery overvoltage protection
Battery under-voltage protection
Battery hot-swapping under normal mode protection
Battery hot-swapping under emergency mode protection
Output open-circuit protection
Output short-circuit protection
Battery .....................................................................................LiFePO4 battery with NTC Detection
Battery charging current .................................................................................................250mA(Max)
Battery charging time .............................................................................................................24hours
Product Series
|
Model Example |
Emergency Power |
Backup Time |
Typical Battery Configuration |
Test Mode |
Output Voltage Range |
|
EK05-0215M/W18 |
2 W |
1.5 h |
2×18650 (1600–2000 mAh) |
Manual (M) |
20–300 V DC |
|
EK05-0203M/W18 |
2 W |
3 h |
2×18650 (2000 mAh) |
Manual (M) |
20–300 V DC |
|
EK05-0203S/W26 |
2 W |
3 h |
1×26650 (4000 mAh) |
Auto (S) |
20–300 V DC |
|
EK05-0315M/W18 |
3 W |
1.5 h |
2×18650 (1600 mAh) |
Manual (M) |
20–300 V DC |
|
EK05-0303S/W26 |
3 W |
3 h |
1×26650 (4000 mAh) |
Auto (S) |
20–300 V DC |
|
EK05-0415M/W18 |
4 W |
1.5 h |
2×18650 (2000 mAh) |
Manual (M) |
20–300 V DC |
|
EK05-0403S/W26 |
4 W |
3 h |
2×26650 (4000 mAh) |
Auto (S) |
20–300 V DC |
|
EK05-0515M/W18 |
5 W |
1.5 h |
2×18650 (2000 mAh) |
Manual (M) |
20–300 V DC |
|
EK05-0503S/W26 |
5 W |
3 h |
2×26650 (4000 mAh) |
Auto (S) |
20–300 V DC |
Note: Besides the above specifications, other parameters can be customized. Please contact the relevant sales for further details.
FAQ
Q1. Are you a manufacturer or trading company?
A1. We are a professional manufacturer of producing led drivers for more than 10 years.
Q2. What is your MOQ?
A2. Our MOQ is 200pcs. But can be negotiable based on different models.
Q3. What is your delivery time ?
A3. Our delivery time is 7-20 days which is depended on models and quantity.
Q4. Do you accept OEM/ODM?
A4. Yes. We accept OEM/ODM. And one of our advantage is doing customized drivers for customers.
Q5. Service
A5. We have a professional service team to solve all the questions and problems. No worry about the after-sales service.
Q6. How about your R&D capability?
A6. We have professional engineers for certificates and research&development.
We have passed cUL, FCC, ENEC,SAA, TUV, ROHS, CE, CB, CCC.
Company Profile
Shenzhen Jusin Technology Co., Ltd., established in 2012, is a national high-tech enterprise integrating research and development, production, sales and service of LED driver. Headquartered in Shenzhen,China. We have set up a branch in Taiwan, and have a 4000 square meter factory in Foshan High-tech Zone for production.In the 10 years since its establishment, all Jusin family have continuously created value for nearly 1000 partners around the world by responding the market demands rapid and accurate, high-quality products and perfect services, and have passed the "ISO9001:2015" quality management system certification.
EMAI is a dedicated emergency LED driver brand under JUSINPOWER.EMAI focuses exclusively on LED emergency drivers and backup power solutions, designed for commercial, industrial, and engineering lighting applications.
Exhibition
Every year since 2016, we have been attending Guangzhou International Lighting Exhibition and Hong Kong Exhibition in Autumn.During the exhibition, we met customers from all over the country who came to visit and learn about our products. After the customers became familiar with our products, our products were unanimously praised by customers and returned their orders.













