i got a new battery for my Dell Latitude D630 (which is currently my favourite laptop in my collection) and it lasts for about 4 hours doing light tasks and my Lenovo V15 which i got in november 2022 lasts basically half of that

the battery i got for the D630 is 7500MAh tho while the one in my V15 is 4500 so uh that might be the reason for that