how accurate are your scales?

most read to 0.01g or 0.1g depending on the model. the precision's listed on each product page.

what's the max weight they handle?

it varies by model. pocket scales tend to top out around 100g, while larger bench scales handle a good deal more. the maximum capacity is listed in the spec on each product page. pick one with a bit of headroom above what you usually weigh so you're not working at the limit.

how do i calibrate a digital scale?

use a calibration weight or known reference, hold the cal button, and follow the model's steps. do it now and then for accuracy.

do the scales come with batteries?

most of our scales include batteries so you can start weighing straight away. some of the bigger scales need their own, and where that's the case it's noted on the product page. it's worth keeping a spare set in the drawer either way. flat batteries are the usual reason a scale reads oddly.