Battery assemblies

I'm working on a project building banks of batteries for renewable energy storage. The batteries will mount directly to PCBs with circuitry to independently activate and monitor each cell. They have some custom interfaces to mount the batteries and to solder PCBs directly together. They had questions about the custom pads on the first iteration. They are thorough about understanding the intent of the design and it came out perfect. Several iterations later including small tweaks to the pads, they haven't needed to ask about them again. PCBWay clearly documents those details and incorporates them into future designs. It makes it easy to order multiple iterations of a design. After the first iteration each similar board has been approved in 1-2minutes. Their customer service is quite fast and responsive. They will allow you to update the design until they build it by submitting new files. PCBWay makes and ships quality boards on time as ordered. I would recommend them for prototyping and development.