EG4 6-Slot Battery Rack With Bus Bars: What EG4 Documents and What We Saw

Our look at two EG4 6-slot battery racks with bus bars, and one rack battery that did not fit. What EG4 documents and what we saw.

Last reviewed 2026-10-15.

What the manufacturer documents

• EG4's product page for the Enclosed Battery Rack Pre-Assembled 6 Slot Capacity (SKU EG4EBR00V00A6SW), viewed 2026-10-15, lists dimensions of 24 in x 26 in x 46 in, heavy-duty steel construction, built-in heavy-duty 600A busbars with protective covers and a black powder-coated finish. It describes a vented front and back panel, a locking cabinet door, casters, and top and bottom ports for cable routing. (eg4electronics.com)
• The page links one document, the EG4 Welded Indoor Cabinet manual, labelled version 2.0.5. The page does not say in its own text that the rack in our video is this product or this document's model; see the caveats. (eg4electronics.com)
• The EG4 Welded Indoor Cabinet user manual, version 2.0.5 (copyright 2025, model BC-6-WD-00, file dated 2025-10-30 by the server), lists cabinet dimensions of 23.6 x 26.8 x 46.9 in (50.1 in high with casters) and a weight of 156 lb with casters. (eg4electronics.com)
• The manual lists a maximum of 6 batteries, described as EG4 Server Rack Style, a maximum busbar current of 600A, an energy storage capacity of 5.12 to 30.72 kWh, busbar covers and busbar heat shrink protection, and a standard warranty of 3 years. The manual's text says the cabinet houses up to six EG4 rack-mountable batteries. (eg4electronics.com)
• The manual describes the busbars as 825 mm positive (red heat shrink) and negative (black heat shrink) bars mounted in wiring duct, four swivel casters with adjustable feet, six pairs of horizontal battery rails, two ground fasteners in the floor of the cabinet, and 1.5 in top, 2 in side and 1 in side cable openings. It has installation, grounding, cabling and torque sections; we do not reproduce them, and this page is not installation guidance. (eg4electronics.com)
• The manual's unpacking list names one cabinet, 4 swivel casters, 4 wire glands, 2 keys, 16 M6 bolts and 24 M5 bolts. Its component table, in the same manual, names 48 M5 bolts for securing batteries. The manual does not reconcile 24 and 48 in the text we read. (eg4electronics.com)
• In the text we extracted from the manual (drawings were not checked for dimensions), we found no height or clearance figure for a battery slot, no caster load rating and no list of compatible non-EG4 batteries. This statement is limited to this one manual, version 2.0.5. (eg4electronics.com)

What happened to us

• The owner says the video is about trying to clean up a mess of batteries and cabling by fitting it into EG4 6-slot battery cabinet racks with bus bars, and that he has two of them, one behind the other. Where and when they were bought, and the exact model, are not recorded. (video)
• The owner describes his previous arrangement as a used 24 in rack picked up (he thinks from an online marketplace) for roughly 20 dollars, modified to take 19 in equipment, with no bus bar and the cabling tied in place. He says it probably has its own share of issues. The transcript is unclear about the modification itself. (video)
• The owner says a box was zip tied inside the rack and held four casters, keys, mounting screws and four cable glands. He says the glands are marked PG-13 (and he thinks something about 16) and that the casters carry a marking he reads as a maximum of about 2450, which he guesses is newtons. These are his readings of small markings, not checked against any document. (video)
• The owner says the four casters seem identical, swivel and have ball bearings. No load test or weight reading is shown. He says each caster has four screws and that one extra screw was included. (video)
• The owner says the rack is solid steel like a server rack, with extra squares welded at each corner of the base, about an inch in each direction. He says some welds look closer to half an inch or three quarters of an inch, that they are not full welds and could be better. This is a visual comment only; no engineering assessment, measurement or load test is shown. (video)
• The owner shows the rack resting on its casters with the door removed. He says the door is vented, comes off after pulling one pin, and locks with a key. He counts six battery slots, with four screws on each side of each battery (about eight per battery), and shows the bus bars in a plastic channel, red positive and black negative, with heat shrink on some parts. He says he is not sure whether there is more insulation than the heat shrink. Nothing was installed in the rack at that point, per the owner. (video)
• The owner says he ran into a problem because he had not checked dimensions: he measured about 6 and 5/8 inches from the bottom of one shelf to the bottom of the next, about 6 and 1/2 inches of space between them, and about 7 and 1/16 inches (he says it may be 7) for the height of an AOLITHIUM server rack battery. He concludes that the AOLITHIUM batteries will not fit in the EG4 rack. The AOLITHIUM model, the measuring tool, its accuracy and what the battery height was measured from are not recorded. (video)
• The owner ends the video saying he will have to work out how to rearrange things and that there will probably be a part two. Whether that video exists, and how the batteries were finally arranged, are not recorded. (video)

What EG4 documents and what we saw

What we did not verify

• This page is our experience with one unboxing of an EG4 6-slot battery rack with bus bars. It is not a recommendation to buy, install, change or repair anything, and it is not advice on choosing a rack, matching batteries to a rack or arranging a battery bank.
• We did not record which EG4 model or version our two racks are. The product page links the Welded Indoor Cabinet manual version 2.0.5, and we assume, without confirmation, that the video's rack is that product. The video may predate the current manual. The product page and the manual give slightly different dimensions; we do not say which is right.
• The manual's text is the only document cited for the absence statement about slot height, caster rating and compatible batteries. EG4 may publish this elsewhere, for example in drawings or other documents we did not read.
• Every dimension, count and marking from the video is the owner's spoken or read-out figure, and some are guesses (the caster marking and its unit, the glands, the weld lengths). We did not measure anything for this page. The slot space and battery height are not tied to a stated method.
• We make no statement about the strength of the welds, the casters, the bus bars or their insulation, or about how the rack performs when loaded. The video installs nothing in the rack.
• The owner also gave recommendations and tips in the video (about checking dimensions, tools, grounding and cabling). We left them out on purpose.
• The AOLITHIUM manufacturer's documents are not cited, because the manufacturer is not on our approved list. The fit statement is only the owner's measurement and reading.
• Not recorded: the rack model and version, purchase source and date, the AOLITHIUM model, the measuring tool and what the battery height was measured from, what the old marketplace rack was modified with, and how the batteries were finally arranged. Also not recorded: the owner's answers to 6 follow-up questions on identification, history, measurements and dates that the video does not state.

Questions and answers

Did the AOLITHIUM rack batteries fit in the EG4 6-slot rack?

Not in the video. The owner measured about 6 and 5/8 inches shelf to shelf, about 6 and 1/2 inches of space, and about 7 and 1/16 inches for the AOLITHIUM battery, and concluded it would not fit. These are his approximate figures and the battery model was not recorded.

Does EG4 document a battery height limit for the slots?

In the text of the Welded Indoor Cabinet manual version 2.0.5 that we read, we found no slot height or clearance figure. It lists up to six EG4 Server Rack Style batteries. That is limited to that one document.

Does the manual match what the owner counted in the box?

Partly. The owner names casters, keys, screws and four glands. The manual lists 4 casters, 4 glands and 2 keys, and its own bolt counts differ between pages (24 M5 bolts on the unpacking list, 48 in the component table). We did not count the box contents.

Is this a recommendation for the EG4 battery rack?

No. This page records what EG4 documents and what we saw in one video, and it does not advise buying, installing or changing anything.

Sources

• EG4 Enclosed Battery Rack Pre-Assembled 6 Slot Capacity product page (EG4)
• EG4 Welded Indoor Cabinet user manual, version 2.0.5 (EG4)

Videos this comes from

• EG4 Battery Rack Review | AOlithium batteries | Bus bars | Battery Cabinet with wheels enclosed – Our unboxing and inspection of the EG4 6-slot battery rack with bus bars, and the fit problem with one rack battery

Related topics

• EG4 WallMount and Rack Batteries

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