Hi Andreas, great to see you’re trying out the platform!
Neil’s away today, so hope you don’t mind me replying instead. I’ve also moved this into its own topic to keep things tidy.
Thanks for flagging this. I’m a little surprised that the estimated weight seems so much higher than the actual weight. The weight estimates come from our source data for the different product categories, which you’re welcome to check.
In some cases, it’s possible that there may be some confusion around categorising different items, which I suspect is the case with the portable CD player.
It sounds like you may have categorised the portable CD player as ‘Hi-fi integrated’, but the category ‘handheld entertainment device’ is probably more appropriate (and has an estimated weight much closer to the weight you measured: 137 grams). I appreciate this may not be obvious though! So for reference, there’s more detail about each category here.
It’s also worth knowing that, with the exception of ‘miscellaneous’ items, the CO2e prevented is calculated independently of item weight. We use source data about the embodied CO2e of each product category to make this calculation, rather than inferring it from the weight of items fixed. So, any differences between the estimated weight and the measured weight shouldn’t impact the CO2e calculation.
In any case, it’s interesting that you mention adding the ability to add an item’s weight manually to override the estimate. Indeed, this would be a smart solution and it’s something we’ve been considering (we may do it if we can find the capacity to do it). It’s helpful to know that you’d find it useful 