Frequently asked questions
Straight answers to what buyers actually ask us about 48V DC plants, legacy rectifiers and telecom lithium.
Is the Eltek Flatpack2 discontinued?
No. Flatpack2 is still an active Eltek product line — Eltek has been a Delta Electronics division since 2015 and continues to list the 48V Flatpack2 range. What is genuinely end-of-life is the earlier Flatpack S and first-generation Flatpack, and the Eltek Valere-era modules. If someone tells you your Flatpack2 is obsolete and quotes you a whole new plant, ask them which specific part number they cannot source.
What is the difference between an Emerson and a Vertiv rectifier?
Usually nothing but the year it was printed. Emerson Network Power was renamed Vertiv in 2016, so the same hardware lineage carries Emerson branding on older sites and Vertiv branding on newer ones. A module labelled Emerson R48-2900U and one labelled Vertiv R48-2900U are the same part. This naming split is the single most common reason people cannot find parts by searching the label in front of them.
Can I put a Huawei R4875G1 in a shelf that has R4850G2 modules?
Not by default. They differ in current rating, and mixing ratings in one shelf affects load sharing and what the controller expects to see. Send us the plant model, the controller and the existing module marking, and we will confirm before you order rather than after.
How do I identify a rectifier module I cannot find a datasheet for?
Photograph the label on the front or side of the module, and a second photo of the whole shelf including the controller. Between the printed designation, the shelf format and the controller generation we can normally identify the part even when the model name has been superseded. Send both photos — the shelf photo is the one people forget and it is often the decisive one.
Do you sell refurbished or pulled modules?
No. We quote new or genuine new-old-stock only, and the quotation states which of the two you are being offered. This matters most on heavily traded part numbers like the R4850G2, where repaired and relabelled units circulate freely in the secondary market.
Do you hold stock in Dubai?
Not at present. VOLT48 sources to order and the quotation states the lead time we commit to. We would rather tell you that plainly than advertise same-day stock we do not have — you can verify a lead time, and a site that is already down does not benefit from an optimistic promise.
Which countries do you supply?
GCC and the wider Middle East, Africa, India and Latin America. We are based in Dubai, which is the commercial and sourcing base; equipment normally ships direct from the manufacturer to your site. We supply only where we may lawfully do so and screen orders against applicable sanctions and export controls.
Can lithium batteries replace my VRLA bank directly?
Sometimes, but it is a sizing question rather than a swap. What decides it is the site load, the autonomy you actually need, whether your rectifier can deliver a correct LiFePO4 charging profile, and the ambient temperature. Send those four things rather than the VRLA part number and you will get a useful answer.
Are you an authorised distributor for Eltek, Huawei or Vertiv?
No. VOLT48 is an independent multi-brand supplier and is not an authorised distributor of, nor affiliated with, any of the manufacturers whose equipment we source parts for. All manufacturer names and model numbers are used descriptively, to identify the equipment in question.
How fast do you reply?
Within one business day on every part request, including the ones we cannot fill. That is the one commitment on this site that is entirely within our control, so it is the one we hold ourselves to.