One of the main features of our VFI-RT+ series UPS is that the runtime can be expanded by the addition of our BPRT battery packs. Unlike competitor products the VFI-RT+ has an adjustable charging current – allowing many battery cabs to be connected without any drawback on recharging time. The VFI3000RT+ has adjustable charging current from 1-8A, and the VFI1500RT+ from 1-12A. Comparable systems generally only offer 1A chargers unless you opt for a specific long runtime model.
Our VFI1500RT+ has a 36V battery string, and our BPRT-36-18 cabinets provide a 36V 18Ah addition to battery capacity – provided by 6x 12V 9Ah blocks. For the VFI3000RT+, the battery string is 72V and our BPRT-72-18 cabinets provide a 72V 18Ah addition – provided by 12x 12V 9Ah blocks.
The BPRT-72-18 cab does weigh in at a heavy 44kg however. This means that it needs to be despatched as freight – e.g. on a pallet. However, this makes it difficult to place in position on site and so on occasion we despatch the battery packs in a kit form – with the battery cabinet (sans batteries) sent in its own packaging and likewise the battery trays.
The purpose of this post is to let you know how to correctly assemble the battery cabinet. Our battery cabs are held in stock without batteries but with the empty battery trays inside the units. So before we despatch the battery trays are fitted with brand new batteries ensuring maximum longevity and packed separately.
The battery cabinet will consist of the cabinet, the battery retainer bracket and the two parts making up the front panel – which we call fixed front panel and detachable front panel. The fixed part is the part where you can see “BATTERY PACK”. There will also be sets of screws – 6 for attaching the retainer bracket and 2 for attaching the fixed front panel.
Slide both battery trays into the cabinet. Make sure the cab connectors are out of the way (move them to the top) and the wires on the trays are safely tucked away. Push them home so they are firmly at the back of the cabinet.