EMS–TRADE Electronics export trading
A wall-mounted battery cabinet, an AC charging wallbox with its cable coiled, and a bifacial solar module standing in a level row on a pale wall

Product category · Group B · new energy

Energy storage, solar & EV charging

Three supplier sites cover the battery, the module and the charger — the interfaces a project has to settle before a site is energised.

Storage
30.72kWh
Maximum expandable capacity, from 5.12 kWh per stackable module
Cycle life
10,000cycles
At 100% depth of discharge, 0.2C at 25 °C
Module line
2GW+
Annual factory capacity; 26.1% cell efficiency, 84.95% bifaciality
Charging
360kW
DC fast charging top of range, from AC 7.4 kW; OCPP 2.0.1 platform

01Connection layer · what we supply

Six families, from the cell
to the charging bay.

6 families3 supplier sitesGroup B
A finished bifacial dual-glass solar module standing upright beside a finished wall-mounted battery cabinet of matching finish FAM-01

Home & microgrid storage

5.12–30.72 kWh5 kW / 10 kW hybrid24/48/51.2 V racks10 ms switchover

Made by EMS-ESS · Group B

A finished new-energy line-up: stackable storage units, one bifacial solar module, an inverter box, an AC wallbox and a DC charger cabinet FAM-02

Solar modules

TOPCon 430–720 WHJT to 730 WBifacial dual-glass26.1% cell

Made by EMS-SOLAR · Group B

A finished cabinet battery storage unit beside a wall-mounted home storage unit with slim teal light strips FAM-03

Grid-tie microinverters

GTB 400–1600 WBalcony & small array20+ countries

Made by EMS-ESS · Group B

Finished EV charging pillars with connector holsters beside a taller DC fast-charging cabinet FAM-04

AC & DC charging

AC 7.4–22 kWDC 30–360 kW6–10 e-bike baysMOQ 1 unit

Made by ems-charge · Group B

A wall-mounted battery cabinet, an AC charging wallbox with its cable coiled, and a bifacial solar module standing in a level row on a pale wall FAM-05

Charging modules

30 kW air-cooled40 kW liquid-cooled96.5% peakIn-house SiC

Made by ems-charge · Group B

A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in a level row FAM-06

Back office & fleet systems

OCPP 2.0.1ISO 15118Third-party platform

Made by ems-charge · Group B

02Connection layer · who builds it

The three named sites
behind this category.

3 sitesGroup B1 contract
A finished bifacial dual-glass solar module standing upright beside a finished wall-mounted battery cabinet of matching finish

EMS-ESS

Wall-mounted, stackable and rack-cabinet storage, plus grid-tie microinverters.

10 ms switchover10,000 cycles at 100% DOD5 + 10 year warranty

CE (LVD/EMC) · IEC 62109-1 & -2 · UN 38.3 · VDE-AR-N 4105 · G99 · EN 50549

A finished new-energy line-up: stackable storage units, one bifacial solar module, an inverter box, an AC wallbox and a DC charger cabinet

EMS-SOLAR

N-type TOPCon, HJT and bifacial modules from a 2 GW+ factory trading since 2012.

26.1% cell84.95% bifaciality900+ per 40′ HC

IEC 61215 · IEC 61730 · UL 61730 · IEC 62941 · ISO 9001 · ISO 14001

Finished EV charging pillars with connector holsters beside a taller DC fast-charging cabinet

ems-charge

AC wallboxes, DC fast chargers and the OCPP 2.0.1 platform behind them.

96.5% module peak33 tests, −35 to +55 °C48 h quote

CE · UL 2594 · UL 2202 · UL 2231 · IEC 61851-1 · ISO 15118 · OCPP 2.0.1 · IATF 16949

03Decision layer · what the specification says

Four figures decide
whether the site works.

storagemodulescharging
Finished EV charging pillars with connector holsters beside a taller DC fast-charging cabinet SPEC-03

Landed cost set by the container

900+ modules / 40′ HCFCL EU 25–30 daysfrom $2,200 / 20GP

Modules per container moves the landed cost per watt as much as the module price does.

Reference rate, Shenzhen origin

04Trust layer · standards

Grid codes, safety and
transport rules.

grid connectionbattery transportEU rules
A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in a level row

Grid connection is national

Grid-tie approval is granted per country. VDE-AR-N 4105 for Germany, G99 for Great Britain, EN 50549 for European parallel connection.

VDE-AR-N 4105G99EN 50549IEC 62109-1/-2
A finished cabinet battery storage unit beside a wall-mounted home storage unit with slim teal light strips

Batteries carry a second rule set

UN 38.3 reports and MSDS for transport, IEC 62619 for industrial lithium cells, and EU Battery Regulation 2023/1542 on due diligence.

UN 38.3IEC 62619EU 2023/1542
Three identical slim white AC wallboxes with their cables coiled on hooks, beside a taller graphite DC fast-charging cabinet

How lithium travels

UN3480, UN3481, UN3090 or UN3091 under 49 CFR 173.185. 20 Wh for a cell and 100 Wh for a battery set the boundary.

49 CFR 173.18520 Wh cell100 Wh battery
Finished EV charging pillars with connector holsters beside a taller DC fast-charging cabinet

CE, and what it is not

CE is the manufacturer's declaration, with a technical file. EU wording: it does not indicate approval as safe by any body.

LVD / EMCCE declarationRoHS declaration

05Execution layer · how we carry it

Four services carry
a site energy order.

6 service lines1 contract
Two technicians seen from behind at a bench, one holding a document of grey placeholder bars and the other pointing at it SVC-01

Sourcing & matching

Three suppliers, one energised site.

We match storage, generation and charging as one system rather than three separate quotes.

An engineering bench under an inspection lamp with a finished circuit board assembly, a magnifier arm and sample connectors SVC-04

Technical assessment

A grid code that does not match the market.

Written by engineers: inverter grid code, battery cycle claim, charger protocol.

Digital calipers closed around a machined aluminium housing beside a blank inspection checklist and a sealed sample bag SVC-05

Production follow-up & QC

A prototype passes; a production batch has to survive a roadside.

Pre-shipment inspection to ISO 2859-1 general level II, critical defects at zero.

An export loading bay with an open container onto a pale apron and unlabelled cartons on pallets SVC-06

Export execution

Dangerous-goods paperwork discovered at the port.

FOB by default, FCA for inland stuffing; lithium papers are quoted, not discovered later.

06Inputs · what to send us

What to send us.

4 inputsthen a quote
A flat site diagram of five silhouettes in a row: a panel array, an inverter box, a cabinet battery, a charging pillar and a grid pylon
Fig. A Generation, storage, conversion, charging, grid interface.
01Load profileDaily kWh, peak kW, and whether the load must ride through a grid event.
02Site drawingArray layout, cabinet position, charger bay count and cable routes.
03Target price and volumeTarget price, annual volume, first-order quantity and pilot-site size.
04Market and grid codeDestination country, because the grid-tie approval is national, plus FOB, FCA, CFR or CIF.
A finished cabinet battery storage unit beside a wall-mounted home storage unit with slim teal light strips
Fig. B Cabinet and wall-mounted units share one storage platform.
A finished new-energy line-up: stackable storage units, one bifacial solar module, an inverter box, an AC wallbox and a DC charger cabinet
Fig. C The interfaces between the three families are where projects slip.

07Start

Send us your site load profile.

Attach the load profile or the site drawing and we will say which of the three sites fits.

Recorded. An engineer will reply.

Written technical assessment, from eric@dfshk.cn.

Book a factory visit eric@dfshk.cn · +86 152 3512 7440