Frequently asked questions.
MOQ, lead times, samples, certifications, warranty, OEM options, payment and lithium shipping — the questions distributors and installers ask before their first order, answered with the numbers that matter.
From inquiry to first container.
Inquiry & selection
Share your target market, daily load and grid-connection standard. We match the right 3–12 kW system and expansion plan.
Samples & documents
Test a sample against your local grid code and receive the CE, IEC and UN38.3 certificate pack for approval.
Production & logistics
Battery packs ship UN38.3-compliant by sea or air with full export documents, on DAP or DDP terms as agreed.
Shipping lithium, the compliant way.
Class and route determine how your batteries move — here is the reference table our logistics desk works from.
| UN 3480 | Lithium-ion batteries shipped alone |
|---|---|
| UN 3481 | Batteries packed with / contained in equipment |
| Sea freight, China to Europe | About 40 days on standard routes |
| Arctic express route | About 20 days, China to Europe |
| Air freight | Requires UN38.3 certification |
| Air freight SOC convention | Commonly ≤30% state of charge |
| Trade terms | FOB · CIF · DDP · DAP |
| Packaging standard | UN-compliant export packaging |
| Documents | MSDS · test reports · air / sea reports |
| Battery transport reports | UN38.3 · MSDS · air & sea |
Seventeen answers, no runaround.
MOQ varies by model and by OEM/ODM level. Sample orders for evaluation are supported, and larger distributor programs qualify for tiered pricing. Contact sales with your target market and we will return a same-day quotation.
Our battery pack manufacturing partner ships standard samples in 3 working days, custom samples in 15 working days and mass production in 20 working days. Sea freight from China to Europe adds about 40 days on standard routes, or about 20 days on the Arctic express service.
Yes. Standard samples and custom samples are both available, so you can validate the unit against your local grid code and installation practice before committing to a batch.
CE, IEC 62109-1&-2, IEC 62477 and UN38.3 across the ESS lines, plus grid-connection approvals for the EU, UK, Germany (VDE-AR-N 4105), Poland, Czech Republic, India and Pakistan. The microinverters carry CE, RoHS, LVD and EN compliance.
The residential ESS carries a 5-year product warranty and a 10-year performance warranty, with the system rated for a 10-year design life.
Yes. Factory colors are pure white and gray; OEM color matching, logo printing and private-label packaging are supported. See the OEM/ODM capabilities page for the full menu.
Payment terms are agreed per order against your volume and destination. Contact sales for the applicable terms for your market.
Batteries ship under UN 3480 when sent alone or UN 3481 when packed with or contained in equipment. Sea freight from China to Europe takes about 40 days on standard routes, or about 20 days on the Arctic express; air freight is available for UN38.3-certified packs.
UN-compliant export packaging with MSDS and test reports included. Confirm any specific pallet, labeling or retail-box requirements with sales before production.
Yes. English manuals, wiring diagrams and dimension sheets are provided, with design guides and direct support for your installers. The three-cable, foolproof-socket design keeps field training short.
Yes. The APP plus EMS cloud platform provides monitoring and remote fault diagnosis for the ESS lines, and the GTB microinverters use WiFi cloud monitoring with Bluetooth pairing.
Yes. Systems scale from 5.12 kWh by stacking modules — 1 to 8 on single-phase entry models — reaching 30.72 kWh without replacing the inverter or rewiring the site.
ESS battery modules expand from 1 to 8 per system depending on model. The stackable HomeESS battery line from our manufacturing partner supports up to 16 clusters in parallel per its specification.
The LiFePO4 storage is rated for 10,000 cycles at 0.2C and 25 °C with 100% depth of discharge — far beyond the daily charge-discharge of a typical home over its 10-year design life.
Remote diagnosis through the EMS cloud, warranty service and spare-part support coordinated through sales. Contact sales to agree the service-level terms for your region.
Returns are handled under the product warranty and the agreed order terms. Contact sales for the specific return and replacement process that applies to your shipment.
Yes. Firmware customization and APP branding are available as part of the OEM/ODM program, so monitoring and behavior can match your product line.
Still have a question we missed?
Send it with your market and volume — our sales team replies within 24 hours on working days.