Sample testing confirms that a custom pack meets your requirements before mass production, and the programme length depends on which checks are needed.

How Long Does Sample Testing Take and What Items Are Tested?

Typical Test Items

After samples are built, the core checks verify basic capacity and internal resistance under standard conditions, followed by confirming the charge and discharge curve. Safety and reliability spot checks may cover over-charge, short circuit, high-temperature storage and drop or impact, depending on the project.

Timeline and Process

Routine electrical verification of samples is normally completed within days, while longer tests such as cycle life or high-temperature aging run over weeks because they require repeated cycling or extended storage. Exact duration depends on cell count, the test sequence and whether extra certification is requested.

During sampling, be clear about your target capacity, voltage, discharge current, temperature range and any certification needed. This lets the lab focus on the right items and avoid rework. Sample quantities, fees and lead times are arranged per project evaluation to match your validation plan. Keep in mind that a sample passing basic electrical checks does not yet prove long-term durability, so cycle and aging data should be reviewed before tooling is finalized.