WattCycle 48V 100Ah Wall-Mount Battery: What WattCycle Lists and What Three Videos Show

Three videos on one WattCycle 48V 100Ah wall-mount battery: spoken readings differ in places from WattCycle's page. Not a recommendation.

Last reviewed 2026-10-16.

What the manufacturer documents

• WattCycle's product page for the 48V 100Ah 5.12kWh wall-mounted battery (page headed 'Tech Specs', retrieved 2026-10-15; the page prints no version number, and it shows a 314Ah model in the same table, so only the 100Ah column is used here) lists a LiFePO4 battery of 5.12 kWh with a single cell capacity of 100Ah and a rated operating voltage of 51.2 V, internal resistance of 13.9 milliohms or less, dimensions (length x width x height) of 15.67 x 7.87 x 24.61 inches (398 x 200 x 625 mm) and a weight of 99.21 lb (45 kg). (wattcycle.com)
• The same page lists standard input and standard output current of 50 A each, with a maximum of 100 A each, a charging overcurrent protection figure of 110 plus or minus 10 A for 10 seconds and a discharging overcurrent protection figure of 120 plus or minus 10 A for 10 seconds. These are WattCycle's listed figures; we did not test them and we do not describe what the battery does at those values. (wattcycle.com)
• The page lists overcharge protection at 58.4 V with recovery at 53.6 V, overdischarge protection at 40 V with recovery at 47.2 V. It lists a recommended charging temperature of 0 to 55 C (32 to 131 F) and a recommended discharging temperature of -20 to 60 C (-4 to 140 F). We do not reproduce any settings or procedures. (wattcycle.com)
• The page lists equalization as active equilibrium, parallel capability of automatic addressing for up to 20 units, power failure self-consumption of 300 microamps or less, and RS485 and CAN as the communication protocols. Its feature text names 3A active balancing, a Bluetooth app with an LCD touch screen, and a light strip capacity display. The table also has a row labeled Power Delivery with the value 60 percent, which the page does not explain and we could not interpret. (wattcycle.com)
• The page's feature text says the battery supports RS485/CAN and is 'compatible with all inverters', and that its cells are 'EV Grade A'. These are WattCycle's broad marketing statements; we did not verify them. In the page text we read, no cell maker is named for this wall-mounted model, and we did not examine the page images. (wattcycle.com)
• The page states a 5-year warranty that can be extended to 7 years total on product registration. We did not review the warranty policy itself, and we cite nothing else about warranty terms. (wattcycle.com)

What happened to us

• The owner describes the battery as a new 48 V lithium iron phosphate wall-mounted battery from WattCycle, with a front light bar that shows roughly the state of charge and a color screen. In the first-look video he turned the screen on just after taking the battery out of the box. He read a pack address of one and a state of charge of 61 percent, and said the cell voltages were around 3.284 to 3.287 V, which he took as fairly well balanced. He read an opening voltage difference of about 15 mV and a balancing current of zero at that moment, and wondered aloud whether an active balancer is inside. The model number is spoken in a garbled way in the transcript and is not recorded. (video)
• In the first-look video the owner read the side labels aloud: a nominal voltage of 51.2 V, a standard input current of 20 A, a maximum of 100 A, overcurrent protection of plus or minus 10 A at 110 A for charging and, as he put it, pretty much the same for discharging, parallel capability of up to 15 units, RS485 and CAN, and a charging temperature of 0 to 55 C with discharging described as pretty much the same. He also showed a 125 A rated DC circuit breaker and a power button on the side, two sets of positive and negative quick-connect terminals with one set of cables supplied, an address reset switch, dry contacts and RS485 and CAN ports, and a Cat 5 style cable of about 1 m and a fuse in the box. (video)
• In the review video the owner reads the label again as a recommended standard input of about 20 A and standard output of about 50 A with a maximum of 100 A in and out, charging at 0 to 55 C and discharging at minus 20 to 65 C, and says he believes the batteries are designed to parallel about 20 units; he has only one and could not test paralleling. He names a CHNT 125 A DC breaker. These are spoken readings of labels whose text the captions do not record legibly, and they differ from the first-look video and from the figures on WattCycle's page (see the table). (video)
• The owner says that after the unboxing he ran a capacity test and then used the battery in his garage for about two weeks with a Victron 3,000 VA inverter powering lights, some outlets and chargers. He says that on both capacity test runs it delivered 100 amp hours, or as he first says 100 amps, and that he charged it with a charger at 'about 90-something' amps and that charging and discharging worked. These are spoken approximations: the captions do not record the test method, temperature, discharge current, end voltages or the data, and the owner describes no fault in the video. (video)
• On the battery screen the owner showed pack information, cell voltages, alarm status, charts and a communication protocol list, with CAN set to a protocol he reads as 'PYMEG' (garbled in the transcript) and a long list of other brands and RS485 options. He says marketing material he saw said the battery was compatible with Luxpower or EG4 inverters, that he did not see Luxpower in the list on his unit and did not see a firmware update available, and that he could be wrong. He also reads a balancing current of about 2.4 A on screen while the equalizing switch was on, and says active balancing is a maximum of 3 A. (video)
• The owner removed the cover and described what he saw: bus bars to a 125 A breaker, labeled cells in series, balancing leads on the cells, vents not covered, temperature sensors, glue on connections, and a BMS board he reads as 'WT1001 16S 100 amps'. He points to a spare fuse in the box whose size looks like a Victron mega fuse to him and that has no visible marking on the side he showed. He pointed out a metal piece that looked forced in place with a gap and a cell cage held to the frame by four screws, one of them in a spot he singled out. He gives no measurement, and we make no judgment of the build. (video)
• The owner says he tried the quick-connect cables from several other products he had and that none fitted the terminals on this battery, and that the supplied cables are marked X-Con. He also describes the wall bracket arrangement, a side bracket that stops the battery lifting off the wall, and bottom feet, and notes that the rear rail carries the weight. We do not reproduce installation steps. (video)
• The owner says the website said the cells were BYD, that he tried to check this using the QR code image and could not confirm or refute it, and that the website said the battery was UL listed and he could not find WattCycle in the UL listing search, although he found other companies he used as a check. He says he may have missed it, that the company might be listed under another name, and that he planned to contact WattCycle. The outcome is not recorded. These are his searches, not a finding about the battery's cells or listing. (video)
• In the app video the owner opens the Bluetooth app in guest mode, which he says needs no account, and notes the other option is a login mode that binds devices and syncs data across devices. He shows the battery connected to a Victron MultiPlus II, with about 1 A discharging, a state of charge of 97 percent and about 47.5 W, and says the garage was warm. He says the app shows warnings (none at that moment), temperatures, per-cell voltages, the cells being balanced and the maximum voltage difference. He reads no specific temperature or cell voltage values in the transcript. (video)
• In the app video the owner reads a balancing current on the battery screen of about 0.8 to 0.9 A, which he says moves quickly to about 0.4 A, with a small delay compared with the app. These are spoken approximations from one moment, and not a measurement of balancing performance. (video)
• The owner turns discharging off from the app while about 9 A is being discharged, and the Victron MultiPlus II powers off audibly. He turns it back on and says the MultiPlus II comes back after about two to three seconds with the relays clicking. He says that a lock function in the app could not be used without login mode. He also gave his own view of using this function in other situations, which we leave out. The video shows one cycle and does not show how it behaves in other conditions. (video)

What WattCycle's page lists and what the owner said

What we did not verify

• This page is what WattCycle lists and what the owner says in three videos about one battery. It is not a recommendation to buy, install, change or repair anything, and it is not advice on sizing, wiring, settings or use of the battery or its app.
• The only WattCycle document cited is its product page, retrieved 2026-10-15; the page prints no version number and prices, availability and text can change. The page offers a user manual and the downloads page links manuals, but those files are hosted on Google Drive or a shop file host rather than on the WattCycle site, so we did not cite them and nothing here describes what the manual says.
• The page's table also covers a 314Ah model, and the page offers a rack-mount version as a separate product. We use only the 100Ah wall-mounted column. Our unit's production run, label, firmware and revision were not recorded, so the page may differ from our unit.
• The videos were published on 2026-05-01, 2026-05-20 and 2026-05-25 according to our records; filming dates are not recorded. The label readings in the videos differ from the page and from each other (standard current, overcurrent figure, discharging temperature, parallel count). We do not say which is right; the captions do not record the label text legibly and we did not check the footage.
• The capacity test, the 'about 90-something' amp charging, the balancing currents and the app readings are spoken approximations from the videos. The transcripts of those passages are partly garbled, and the captions record no test data (we did not check the footage for it). The videos do not establish capacity, efficiency or runtime, and do not show long-term behavior.
• The owner's searches for the cell maker and UL listing are his own and unresolved. The page's HTML contains a suggested-search link to this battery's own page whose label begins 'UL1973 Home Battery', while the page's feature text uses generic certification wording without naming a standard or certificate number. We did not verify any certification or listing and draw no conclusion about either.
• The teardown remarks are the owner's visual impressions of one unit. We did not assess build quality, strength or safety, and nothing here says any part is suitable or unsuitable.
• The remote discharge control was shown once with one inverter. This page does not describe its use, and the owner's views on using it before other work are left out.
• Prices, purchase opinions, comparisons with other products and the owner's remarks on competitors are left out of this page on purpose.
• Not recorded: the exact model number, serial number, firmware and app versions, purchase date, the capacity test method and data, the charger used, the exact inverter model and revision, the load models, their power and run times, the battery temperature, and the replies to the owner's questions to WattCycle. Also not recorded: the owner's answers to 6 follow-up questions on identification, history, measurements and dates that the videos do not state.

Questions and answers

Did the owner describe any fault with the battery in these videos?

No fault is described in the three videos. They cover a first look, about two weeks of use with a Victron inverter, a teardown and an app walkthrough, so they say nothing about longer-term behavior.

What did the capacity test show?

The owner says in the review video that both runs gave 100 amp hours. The transcript has no test data, method or conditions, so we treat it as a spoken approximation, not a measurement.

Does the label on the battery match WattCycle's product page?

Not in every item as the owner read them aloud. Examples are the standard current, the discharging temperature and the overcurrent figure. We state both and do not say either is wrong; the labels are not shown legibly in the transcript.

Where does WattCycle document the app or the battery manual?

The product page offers a user manual download, but it is hosted on Google Drive, not the WattCycle site, so we did not cite it.

Is this a recommendation for the WattCycle battery?

No. This page records what WattCycle's page lists and what the owner says in three videos. It does not advise buying, installing or changing anything.

Sources

• WattCycle 48V 100Ah 5.12kWh wall-mounted battery product page, retrieved 2026-10-15 (WattCycle)

Videos this comes from

• NEW 48V Wall Battery from WattCycle (100Ah LiFePO4) – Worth It? – Our first look and unboxing of the WattCycle 48V 100Ah wall-mounted LiFePO4 battery (video dated 2026-05-01 in our records)
• WattCycle 48V 100Ah Wall Mount LiFePO4 Battery Review: Capacity Test, Teardown & Specs – Our review with capacity test results, specifications and teardown of the same battery (video dated 2026-05-20 in our records)
• WattCycle Bluetooth App Review: 48V 100Ah LiFePO4 Battery BMS, Active Balancing & Remote Shutoff – Our walkthrough of the battery's Bluetooth app, active balancing and remote discharge control (video dated 2026-05-25 in our records)

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