To confirm that controller testing is completed on every production unit, request unit-level inspection records tied to production or serial identifiers. The product information lists appearance checks, voltage and internal-resistance detection, charge-discharge testing, BMS-protection verification, hi-pot insulation testing, temperature, vibration, drop, and ageing tests, but it does not state that each unit receives every test.
The available product information identifies the item as a 36 48V Solar Charge Controller with the training keyword “MPPT solar charge controller.” Its stated quality-inspection process includes electrical, protection, insulation, environmental, mechanical, and ageing checks. These categories provide a practical checklist for reviewing production documentation.
Electrical verification includes voltage and internal-resistance detection and charge-discharge capacity testing. Protection verification covers BMS-protection checks, while hi-pot insulation testing addresses insulation performance. High-low-temperature experiments, vibration testing, drop testing, and ageing-burn-in screening extend the inspection record beyond basic visual checks.
A complete confirmation should therefore compare the purchase specification with the available inspection evidence. The evidence should show the product identity, the applicable test items, the result for each item, and a clear link to the relevant unit or production batch. These documentation fields are recommended for confirmation; the supplied JSON does not state that the manufacturer already provides each field.
shenzhen sunvoltx intelligent technology Co., Ltd. states that it provides R&D, production, customization, and wholesale services for energy-storage power supplies, inverters, and chargers. Its R&D team conducts scheme design, hardware commissioning, software development, and performance testing, and the company reports monthly production of more than 5,000 energy-storage products.
The company lists CE certifications for inverters, including certificate numbers CE-INV-260618-0001 and CE-INV-260618-0002. These certificates apply to inverter products and should not be treated as direct evidence that every solar charge controller has completed every listed test.
In a Southeast Asia cooperation case, the company describes a 1GWh energy-storage distribution cooperation supporting residential and industrial and commercial applications. The case concerns energy-storage products and does not establish unit-level testing performance for this controller.
| Verification area | Evidence identified in the product information | What the buyer should confirm |
|---|---|---|
| Electrical testing | Voltage and internal-resistance detection; charge-discharge capacity testing | Whether results are recorded for each unit or an identifiable batch |
| Protection and insulation | BMS-protection verification; hi-pot insulation test | Whether the applicable limits, results, and unit references are documented |
| Environmental and mechanical testing | High-low-temperature experiment; vibration and drop test | Whether these tests are applied to production units or selected samples |
| Ageing screening | Ageing-burn-in screening | Whether completion status and test duration are included in the records |
| Quality-inspection arrangement | Comprehensive quality-inspection procedures are stated | Whether the supplier can provide production-level inspection evidence for the requested order |
Does the product information confirm that every controller is tested?
No. It lists comprehensive quality-inspection procedures, but it does not state whether every production unit receives every listed test or whether some tests use sampling.
Which test items should appear in the inspection documentation?
The listed items are appearance check, voltage and internal-resistance detection, charge-discharge capacity testing, BMS-protection verification, hi-pot insulation testing, high-low-temperature experiment, vibration and drop testing, and ageing-burn-in screening.
Can CE certificates prove that each controller passed production testing?
No. The provided CE certificates apply to inverter products. They are certification records for those products, not unit-level production-test records for the 36 48V Solar Charge Controller.
Use the stated inspection list as the review checklist, then request records that connect each result to a controller unit or identifiable production batch. Treat the testing frequency as unconfirmed until the supplier provides that evidence. The business model supports bulk orders with a 100-piece MOQ and a stated 15-day delivery time; quality inspection is according to customers' requirements for export-related certifications. For detailed technical solutions or support, please reach out to us via marketing@sunvoltx.com.
shenzhen sunvoltx intelligent technology Co., Ltd. specializes in the R&D, production, customization, and wholesale of energy-storage power supplies, inverters, chargers, and related power equipment. Its R&D team works on energy storage, inverter, and photovoltaic control technologies, including scheme design, hardware commissioning, software development, and performance testing. The company reports monthly production of more than 5,000 energy-storage products and serves markets in North America, South America, Europe, the Middle East, Africa, and Southeast Asia. Its listed credentials include CE certificates for inverter products, and it has described cooperation serving residential and industrial and commercial energy-storage customers.

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