YILU
YILU / 01 — INTRO
EST.2017HQHONG KONGR&DSEOUL · GYEONGGI

Built quietly in Korea.Trusted by 100,000+ customers.

Your OEM partner, end-to-end.

YILU is a Korean manufacturer that designs and produces its own SKUs across LiFePO4 batteries, diesel heaters, and IoT-ESS systems. We supply power systems optimized for Japanese RV OEMs and industrial ESS markets, built to your model and your brand.

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#1 FF Heater brand on NAVER Shopping

(Sustained ranking · Korea's #1 search portal)

Verify on NAVER Shopping
KC 62619 CERTIFIEDEVE TIER-1 SUPPLIERIN-HOUSE BMS & IoTOEM / ODM READY−10°C SAFE OPERATION24H REPLYQLINK IoT PLATFORMKC 62619 CERTIFIEDEVE TIER-1 SUPPLIERIN-HOUSE BMS & IoTOEM / ODM READY−10°C SAFE OPERATION24H REPLYQLINK IoT PLATFORM
2017est.
YILU HK LIMITED
Hong Kong group registration / Korean operations since 2018
100,000+units
FF heaters
Korean B2B distribution + direct sales
17+models
Lithium battery systems
KC 62619 certified (2024–2025)
4.7★
Verified on NAVER Smart Store
Sustained 4.7★ rating on the Korean retail channel.
02 — PRODUCTS

Product Line.

14 in-stock SKUs. KC certified. Ready to ship.

01 / HEATERIn stock

FF Heaters

4 models

2KW / 5KW · Diesel · 0.1–0.55 L/H consumption.

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02 / POWERBANKIn stock

LFP BATTERY

4 models

12V · 105Ah to 600Ah · Vehicle, off-grid, backup power.

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03 / DRIVECHARGERIn stock

Drive Chargers

3 models

DC-DC charger line for 12V / 24V vehicle environments. OEM development available.

View all models→
04 / OTHERSIn stock

Other Products

3 models

OEM track record and supported lines outside the categories above.

View all models→
03 — WHY YILU

Six reasons
buyers choose us.

Not a middleman. A single team owns R&D through to shipping — engineered to the quality bar that the Japanese market expects.

01

Design through QC, in-house led

Product design, BMS hardware, firmware, IoT cloud, quality standards — every core product is defined by our internal team and produced as a YILU SKU.

DESIGN · BMS · FIRMWARE · QC · IN-HOUSE LED
02

KC 62619 Certified

Adopted from IEC 62619 (international standard) with local adjustments for Korean conditions.

KC 62619 (BASED ON IEC 62619) / 3RD-PARTY VERIFIED
03

Proven Core Components

Core components from global Tier-1 manufacturers. Engineered for long service life, high durability, and extreme-environment performance.

HIGH QUALITY · STABILITY · DURABILITY
04

−10°C Safe Operation

Even in deep cold, the BMS auto-modulates charge / discharge currents. Designed for winter camping and northern Japan deployments.

LOW-TEMP CHARGING / DISCHARGING · ADAPTIVE CONTROL
05

OEM × Channel Protection

Built around your brand and your model. Every OEM contract includes channel exclusivity clauses as standard — your channel stays yours, no grey-market leakage.

CHANNEL EXCLUSIVITY · NO GREY-MARKET
06

24-hour Reply

Japanese, Korean, and English support. A 24-business-hour email response is our internal standard.

JP / KO / EN SUPPORT · 24H REPLY POLICY
04 — TRUST · NAVER PLATFORM

Korean NAVER Platform Track Record

Verified figures. Verifiable trust.

MARKET POSITION

NAVER Shopping — "FF Heater" category

#1 Popular Brand

Sustained ranking on Korea's #1 search portal public listings

Verify on NAVER Shopping
QUANTIFIED BACKING
4,347+
verified reviewsVerified on Korean NAVER Smart Store
Top-rated SKU:4.78★ · 2,414 reviewsMD홍 무시동 히터 6개월 AS 12V 5K
Verify on Smart Store
05 — TECHNOLOGY

From BMS to IoT cloud.

Most OEMs stitch together hardware and control software from separate suppliers. At YILU, the entire stack is owned and shipped by a single R&D team.

SUB-SYSTEM 01

IoT BMS Board

Cell balancing, temperature monitoring, low-temp control, over-charge / over-discharge protection. Every layer of the control board, designed in-house.

CERT:KC 62619
CHANNEL:UP TO 16S
COMM:CAN / RS485 / BLE
FW:IN-HOUSE · OTA-READY
SUB-SYSTEM 02

QLink Platform

Remote monitoring through mobile app and web dashboard. Instant fault notifications. Last 60 days of operational logs retained per device.

RELEASE:2025
OS:iOS / ANDROID
LOG:60 DAYS HISTORY
ALERT:PUSH + EMAIL
SUB-SYSTEM 03

Quality Control

Cell sorting → BMS assembly → 100% charge / discharge cycle test → high / low-temp chamber → vibration test → outbound inspection. A multi-stage verification line.

TEST:100% FULL CYCLE
TEMP:−20°C / +60°C
VIBRATION:IEC 62133 STD
DEFECT:< 0.5%
06 — TIMELINE

2017 → 2026.
Year by year, compounding.

Starting with the mdhong-branded diesel heater, then LiFePO4, BMS, and IoT-ESS — every year has brought a new product line, all developed under one roof.

2017
YILU HK establishedYILU HK LIMITED registered in Hong Kong as the international holding entity.
2018
Korean operations launchedManufacturing and R&D base established in Ansan, Korea. mdhong-branded diesel heater line launched.
2018
Camping accessoriesStarted import & distribution business.
2019
LiFePO₄ launchReleased LiFePO4 batteries and DC-DC chargers.
2020
In-house IoT R&DBrought product design, PCB, and firmware fully in-house. Vehicle AC unit released.
2023
Passive fan lineNew product category added.
2024
BMS releasedIn-house Battery Management System officially launched.
2025
IoT-ESS integrationFull IoT-ESS solution and QLink app released.
07 — TRACK RECORD

Korean record.
International expansion.

Where the numbers are real, and where we're growing — kept honest and parallel.

INTERNATIONAL · EXPANDING

Extending our domestic OEM and direct-sales infrastructure to international B2B markets. From small-batch prototyping to volume production, including OEM customization of our in-house SKUs — we adapt to partner needs.

YILU HK LIMITED — International B2B operations

Talk to our OEM team→
08 — FAQ

Frequently asked.

Answers to the questions OEM and procurement teams ask us most often.

Standard SKUs start at 50 units. Full-custom ODM starts at 100 units. Prototype samples are handled case-by-case.
In-stock items: 7–14 business days from order. OEM mass production: 30–45 days after spec sign-off. Split delivery from in-Japan warehousing is available. Spec changes turn around within one week.
From light OEM (logo printing, packaging refresh) all the way to full-custom ODM (custom enclosure tooling, PCB design, firmware). MOQ, lead time, and tooling cost share are quoted per project scope.
Core LiFePO4 batteries are KC 62619 certified. Depending on application: UN38.3 (lithium air-transport DG), IEC 62133, CE, RoHS — already certified or available on request. Per-SKU certification list is disclosed after NDA.
Manufacturing-related defects within 12 months of shipment are replaced free of charge. QLink-equipped products allow remote-log first-line diagnosis, eliminating site visits. For critical defects, we ship replacement units on priority.
Standard samples are paid (shipping not included), with sample cost credited against the first mass-production order. Schematics, BOM, and technical drawings are released after NDA.
First-time orders: 30% T/T deposit, 70% before shipment. Repeat customers: credit terms available. We also accept L/C. Settlement currencies: USD / JPY / KRW.
FOB Busan / Incheon and CIF Yokohama / Kobe / Tokyo are supported. We work with forwarders licensed for lithium-battery dangerous-goods transport. Split delivery from in-Japan warehousing is also available.
JIS-compliant individual labels, moisture-proof crating, and palletizing spec are all customizable. We support your branded outer-carton printing, serial-number control, and QR-code labeling. All packaging is qualified to IEC 62133 transport tests (vibration, drop) by default.
No. OEM contracts include a no-third-party-resale clause as standard. SKUs developed under your brand, with your tooling and your markings, stay within your channel — never grey-market. This is a baseline commitment of YILU OEM service.
09 — Get Started

Looking for partnersJapanese market in the
.

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