Residential ESS · Shenzhen · Since 2012
Lithium Battery OEM & ODM,
Engineered for Western Integrators
Five product lines from one factory floor: home storage batteries, 19-inch rack modules, e-bike packs, RV & marine deep-cycle packs, and custom smart BMS — built on EVE and CATL A-grade cells with 6,000+ cycles.
Factory Tour
The Factory Is the Product
Before you sign a single order, walk the lines that build 1.2 GWh a year: cell grading, laser welding, 7-day aging, and 100% end-of-line testing — the same floor your packs will ship from.
Product Lines
Five Battery Platforms, One OEM Partner
Home Battery Storage
Wall-mounted & stackable LiFePO4, 51.2V 100–200Ah (5.12–10.24 kWh), 6,000+ cycles, 12–16 units parallel, IP65.
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E-Bike & Scooter Packs
36V / 48V / 60V / 72V packs on Samsung & LG 21700 cells, BMS 20–80A, EN 15194-ready, 10–30Ah custom capacity.
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19" Rack Modules
51.2V 100Ah 4U modules, 5.12 kWh each, up to 16 parallel (81.92 kWh per cabinet), UL 1973-ready, CAN/RS485.
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RV & Marine Deep-Cycle
12V/24V/36V Group 24/31 drop-ins, 100A BMS with Bluetooth, 4,000+ cycles, one-third the weight of lead-acid.
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Custom Smart BMS
4S–32S boards, 30–500A, RS485 + CAN + Bluetooth 5.0, OTA firmware, inverter protocols for Deye, Victron, Growatt.
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Fully Custom Packs
Custom voltage, capacity, enclosure and connector builds from 200 pcs — engineering proposal in 48h, samples in 15–20 days.
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Why EMS-ESS
Factory-Direct Engineering, Not a Trading Desk
- A-grade cell traceability — EVE LF280K & CATL 314Ah cells, every lot with capacity/internal-resistance reports (≤0.25 mΩ grade cells).
- Laser welding + 7-day aging — busbar joints verified by pull test; every pack full-charge aged before shipment.
- 100% end-of-line testing — OCV, internal resistance and capacity check on every unit, not sampling.
- Inverter-protocol library — Deye, Victron, Growatt, Sol-Ark, SMA and Luxpower communication profiles on file.
- Transparent OEM steps — spec review, 2-day proposal, 15–20 day samples, 30% deposit production.
- Export compliance pack — UN38.3 test summary, MSDS, DG packaging and IMDG sea freight documentation.
Industries
Where Our Batteries Ship
| Industry | What we deliver | Market signal |
|---|---|---|
| Residential Solar Storage | 51.2V wall & stackable batteries for EU/US integrators | Europe added 27.1 GWh of home storage in 2025 |
| Telecom Infrastructure | 48V base-station backup packs, IP65 outdoor cabinets | Lithium cuts site TCO by 35% vs lead-acid |
| Data Centers & UPS | 19" rack modules for UPS retrofits, 10–15 yr service life | Lithium share of new UPS capacity reached 35% |
| Light EV OEM | 36–72V packs with Samsung/LG cells, EN 15194-ready | E-bike battery market heading to $46.1B by 2035 |
| RV & Caravan | Group 24/31 drop-in lithium for OEM builders | 81.5% of RV batteries are still lead-acid |
| Marine & Boating | 12/24/36V Bluetooth batteries, IP65 sealed | 100–125 lbs saved on a 3-battery trolling rig |
| Off-Grid & Emerging | PAYGo-ready 12V packs, high-temperature tolerant | Africa BESS installations to grow 700% by 2030 |
| Commercial & Industrial | Parallel rack systems to 81.92 kWh per cabinet | Demand charges are 30–70% of C&I power bills |
OEM / ODM Process
From Spec to Container in Four Steps
Requirement Review
Send voltage, capacity, application and target annual volume — an engineer (not a salesperson) replies within 24 hours.
Proposal & Samples
Specification sheet and quotation in 2 working days; sample packs built in 15–20 days with the agreed BMS profile.
Production
30% deposit starts the line; 100–500 units deliver in ~15 working days, container volumes in 25–30 days.
Export Delivery
UN-certified packaging, SoC set to 30% for air, IMDG sea freight from Yantian or Shekou with full documentation.
Compliance
Certified for EU & US Market Entry
Track Record
Programs Delivered
"3,000 wall-mounted 5.12 kWh units per year for a German home-storage brand — zero warranty claims in the first 18 months of deployment."
"48V 20Ah swap packs for a UK e-bike fleet operator — 21700 cells with a custom BMS profile and 2,000+ cycle field life."
"12V 100Ah PAYGo batteries for a South African off-grid distributor — high-temperature aging passed, 45°C sustained operation."
Get a Factory Quote in 24h
Send your spec — voltage, capacity, application, annual volume. A battery engineer replies with a costed proposal.
