Before you submit
Check that usable capacity and rated power are not collapsed into one phrase. Say whether a bidirectional inverter or other power conversion equipment is inside the request. Leave code approval, interconnection and installation method with the qualified reviewer.
A target budget should name the currency and whether it is per unit or for the whole order. High-end, mid-range, budget or undecided is your preference while factories are being asked. It is not a score already earned by a supplier.
A lower equipment price may suit a purchase with existing local service support; a broader spares and service package may suit a site that needs commissioning assistance. Identify the preferred scope, then ask both suppliers to itemize freight, duties, spares, warranty exclusions and service charges before comparing the delivered total.
You can also review the checklist, inquiry labels and the buyer note before sending.
If the site is a rooftop retrofit, say whether the storage request is AC-coupled at an existing board. If it is a new ground-mount plant, say whether anyone has asked for a DC-coupled path and what DC voltage is already on the one-line. Fleet depots should separate charger hardware from the battery quantity. Campus yards should say who configures the energy management system after delivery.
Thermal management, enclosure rating and operating temperature change where a cabinet can sit and how much auxiliary energy cooling will draw. Ask the factory to state those on the datasheet for the quoted model. Cycle life and round-trip efficiency are useful only when the depth of discharge and the test temperature travel with the number. Leave those cells blank when the buyer does not yet have them.