When it come to buying an item (such as a battery) from a retailer that has their name put on it, unless the retailer states as part of the description that the item is made by a particular manufacture, you cannot assume the retailer will always use the same manufacturer. They can use any product that meets the specification sourced from where very they can get the best deal.
And you can't go just by the looks of the product. It's entirely possible a recognised brand manufacturer might use the same case, but use different materials inside either to keep price down, or to ensure there is areal differentiation between manufacturer's brands and retailers rebranded products they produce.
Having two products made in the same factory or even on the same production line is no guarantee the same level of care is awarded to both products (the caravan industry proves that every day).
Just as an example, I will purchase own brand Scandinavian spreadable butter products from a variety of different supermarkets. Each companies product has a slightly different colour enough to see the difference, so the product mixes are unique, yet several of the packs clearly have the date and batch codes in using the same typeface and in milimeter precise same position on the packs.
But also the plastic packs are physically identical down to the forming impression marks left by the vacuum moulding process
Same case different contents.
And you can't go just by the looks of the product. It's entirely possible a recognised brand manufacturer might use the same case, but use different materials inside either to keep price down, or to ensure there is areal differentiation between manufacturer's brands and retailers rebranded products they produce.
Having two products made in the same factory or even on the same production line is no guarantee the same level of care is awarded to both products (the caravan industry proves that every day).
Just as an example, I will purchase own brand Scandinavian spreadable butter products from a variety of different supermarkets. Each companies product has a slightly different colour enough to see the difference, so the product mixes are unique, yet several of the packs clearly have the date and batch codes in using the same typeface and in milimeter precise same position on the packs.
But also the plastic packs are physically identical down to the forming impression marks left by the vacuum moulding process
Same case different contents.