
Rechargeable Lithium Battery Emergency Drivers with High Quality
The EMAI EK05 redefines emergency lighting flexibility with its 20–300VDC high-voltage output range, supporting virtually any standard LED driver in dry indoor environments. Unlike conventional kits, it provides constant power (2W/3W/4W/5W)-ensuring complete emergency operation. This makes it perfect for specifiers in Dubai, Berlin, London, or Sydney seeking code-compliant solutions. The system runs automatic self-diagnostics every month and year, flagging issues before failure. If a fault (e.g., short circuit or over-discharge) is detected, charging stops immediately; once resolved, AC reactivation is automatic-no manual reset needed. Compact thanks to lithium technology, and certified to ENEC, CE, UKCA, CB, and C-tick. Not for high-risk areas. 3-year warranty for long-term confidence.
Top Features and Benefits:

200-240Vac

Constant power emergency

Monthly-check function

ENEC certification

LiFePO4 battery
- Complies with EU Battery Regulation (EU) 2023/1542-eco-responsible design.
- No dimming over time: constant power keeps light output steady.
- Over/under-voltage, short-circuit, and deep-discharge protections included.
- 3-year warranty backed by a specialized power electronics manufacturer.
- Constant Power Output: Available in 2W, 3W, 4W and 5W options.
Application Scenario
Hospitals and Healthcare Centers: Maintains essential lighting in patient rooms, operating theaters, and emergency rooms to ensure continuous medical care and safety during power interruptions.

Product Advantages
1. One Driver, Multiple Markets: ENEC + CB + UKCA + C-tick
ENEC isn't just another logo-it's a benchmark for safety in European lighting. The EK05's ENEC certification proves it meets stringent IEC/EN standards for insulation, thermal performance, and fault protection. Paired with CB Scheme recognition, it enables fast national certifications in 50+ countries. Add UKCA and C-tick, and you get a single driver that satisfies regulatory requirements from London to Sydney-reducing cost and complexity.
2.Intelligent Thermal Management Meets Regulatory Excellence
This emergency power supply leverages advanced LiFePO₄ chemistry paired with real-time NTC temperature detection to deliver consistent, safe performance. The system automatically adjusts or halts operation if temperatures drift outside the 0–60 °C window, preventing damage and extending service life. Certified under the landmark EU Battery Regulation (EU) 2023/1542 (Ref: 2IFpR19/66), it reflects a commitment to environmental stewardship, ethical sourcing, and consumer transparency-key pillars for sustainable technology in Europe and beyond.
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.













