Another good idea if you want to differentiate yourself from the cheaper Chinese sellers and battery packs is to provide all (accurate) information about the packs up front.
Your site quotes 20A max continuous discharge, but you sell 4 different packs, from 36V10Ah to 48V24Ah, they must differs in specs? There is also no size/weight info on the 20/24Ah packs.
Protection is good, but that tape solution looks bad. Is it really needed?
Site says packs come with pos. and neg. terminals that we have to configure ourself, fair since there is allot of different connectors in use but in the pictures it looks like big white connectors are already taped into the pack? Do we have to get the tape of to mount our own?
There is a battery distance chart on your site, but no mention what battery pack or controller was used to get that data.
More information about the charger? Site quotes 3-4h charge for empty to full, same on all packs? Does that mean they ship with different chargers?
Any details on the BMS? your site says "Maximum discharge spike 25A for < 2 seconds" is that a battery or BMS limitation? same for all packs?(probably not, so why keep the customer guessing)
basically, give your customer the relevant information about the product you are selling