There can be a problem with low-cost batteries. For instance, the Kirkland AA cells sold by Costco are very inexpensive, but their instantaneous discharge capacity is much lower than that of the higher-priced Duracells and Energizers. This means devices like Digital Cameras may turn themselves off due to low battery voltage once they take a picture and the flash needs to recharge. Short cuts in battery manufacture may not be evident, but they are there. Lithium Ion batteries (and Nickel Metal Hydride for that matter) have very good discharge current capacity. Some of the less expensive NiCd's do not.
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There can be a problem with low-cost batteries. For instance, the Kirkland AA cells sold by Costco are very inexpensive, but their instantaneous discharge capacity is much lower than that of the higher-priced Duracells and Energizers. This means devices like Digital Cameras may turn themselves off due to low battery voltage once they take a picture and the flash needs to recharge. Short cuts in battery manufacture may not be evident, but they are there. Lithium Ion batteries (and Nickel Metal Hydride for that matter) have very good discharge current capacity. Some of the less expensive NiCd's do not.