RM-5 19-inch rack battery module (5.12 kWh)

Consistency is the product

An integrator's real cost is engineering time. A module that gains two per cent energy density but grows eight millimetres in depth invalidates a cabinet design, a shipping carton and a mounting jig — and that cost lands on the customer, not the supplier.

We freeze the mechanical envelope for the life of a platform and publish changes in advance. When a platform does change, the previous revision is supported alongside the new one for a defined period so existing stock can be used up.

Paralleling behaviour

Sixteen modules in parallel with automatic address assignment, and current sharing within five per cent across the string. Where sharing drifts beyond that, it is almost always a cabling asymmetry rather than a module fault — equal cable lengths from each module to the busbar are worth the extra effort.

If your cabinet has an unusual busbar arrangement, send the drawing. We will tell you whether the asymmetry is within tolerance or whether the current sharing will be poor enough to affect the warranty.