The Zebronics ZEB-MLS755 is a 600VA / 360W line-interactive UPS that Zebronics positions as a “micro load” UPS, built mainly for low-power equipment such as CCTV DVRs and cameras, Wi-Fi routers, PoE switches and VoIP phones. If you want a plug-in AC backup for a small network or surveillance setup, it is a sensible fit. If you mainly want backup for a full desktop PC, read the waveform and battery sections first, because this unit is tuned for light loads.
The short verdict: the MLS755 has the basics a home or small-office buyer needs, including a wide 140-300 V input window, three outputs, automatic voltage regulation and clear alarms. Its headline backup figure of up to 3 hours 45 minutes comes from a very light test load, so your real runtime will depend on what you plug in. There is also a battery-type mismatch between the official page and the Amazon.in listing that you should clear up before buying.
This article is based on Zebronics’ official product page and the Amazon.in listing data, both checked on 17 October 2026. It is not based on hands-on testing, and no lab results are claimed here.
Quick verdict
- Best for: keeping a router, ONT, CCTV DVR or small PoE switch running through short power cuts
- Skip if: you need long backup for a desktop PC, or your PC power supply needs a pure sine wave UPS
- Key strengths: 140-300 VAC input range, double-boost AVR, auto restart when mains returns, overload and short-circuit protection, clear LED and buzzer alerts
- Key limitations: simulated sine wave output, a single 12V 7Ah battery, 6-8 hours to recharge to 90 percent, and the backup claim is based on a light test load
Key specifications
| Specification | Zebronics ZEB-MLS755 (as listed) |
|---|---|
| Capacity | 600VA / 360W |
| Type | Line-interactive, microcontroller based, micro-load sensing |
| Input voltage (nominal) | 220-240 VAC |
| Accepted input range | 140-300 VAC |
| Output voltage | 230 VAC plus or minus 10 percent (AC and battery mode) |
| Output waveform | Simulated sine wave |
| Transfer time | 4-8 ms |
| Output sockets | 3 |
| Battery | 12V 7Ah x 1 (chemistry not stated on official page, Amazon.in listing says lithium-ion) |
| Charging current | 1A |
| Recharge time | About 6-8 hours to 90 percent |
| Claimed backup | Up to 3 hr 45 min (1 DVR without HDD plus 3 cameras without IR) |
| Protection | Overload, short circuit, over-discharge, over-charge, input fuse |
| Indicators | 3 LEDs plus audible alarms |
| Unit size (W x D x H) | 10.5 x 27.6 x 14.4 cm |
| Weight | 3.9 kg (official), 3,820 g (Amazon.in listing) |
| Box contents | UPS, QR code guide, fuse |
| Warranty | 1 year, carry-in to service centre (per Amazon.in listing) |
| Colour | Black |
The link below points to the black ZEB-MLS755 (600VA / 360W) listing. Confirm the model number on the page before ordering. Check the current price of the Zebronics ZEB-MLS755 on Amazon.in.
What “micro load UPS” means for you
Many home UPS units are sized for desktop computers, which draw far more power than a router or a CCTV recorder. Zebronics describes the MLS755 as a micro load UPS “specially made for security and surveillance CCTV”, and its official page lists a “ZEB Micro Load Sense” system, described as microprocessor-based output load sensing. The Amazon.in listing adds routers, PoE switches, smart home hubs, VoIP phones and small NAS boxes to the list of target devices.
In practice, this is a UPS for the always-on devices that drop out during a short power cut: an ONT or modem, a Wi-Fi router, and in a shop, a DVR and a few cameras.
Input range and voltage regulation
The official page lists a nominal input of 220-240 VAC and an accepted range of 140-300 VAC. The wider this window, the more often the UPS can keep running from mains and correct the voltage instead of switching to battery.
Zebronics also lists double-boost AVR (automatic voltage regulation). AVR lets a line-interactive UPS raise low voltage or trim high voltage while still running from mains, which saves battery cycles for real outages. Output is listed as 230 VAC plus or minus 10 percent in both AC mode and battery mode, and the battery-mode frequency is 50/60 Hz plus or minus 1 percent.
Battery, backup time and recharge
The official page lists the battery as a single 12V 7Ah unit. On paper that is about 84 watt-hours of stored energy (12 x 7). Usable energy is lower, because the inverter loses some energy as heat and the UPS cuts off before the battery is fully drained to protect it.
The headline claim, on both the official page and the Amazon.in listing, is backup of up to 3 hours 45 minutes. Both sources tie this to a specific test: one DVR without a hard disk and three cameras without IR enabled. That is a very light load. A DVR recording to a hard disk, cameras switching to infrared at night, or a router plus ONT plus switch will usually draw more, so expect shorter runtime. Zebronics itself notes that backup depends on the system’s configuration and efficiency.
To estimate your own runtime, add up the power draw of the devices you will connect and divide the usable battery energy by that total. Treat the result as a rough upper bound, then test with mains switched off to see the real figure.
Recharge is slow: the official page says roughly 6-8 hours to reach 90 percent after a full discharge, at a 1A charging current. If your area has several outages a day, the battery may not refill completely between them.
Zebronics also claims an “Advanced 3 Tier battery management system” that extends battery life by more than 30 percent. No baseline is given, so treat it as a brand claim.
The battery-type mismatch
The Amazon.in technical details list the battery cell type as lithium-ion. Zebronics’ official page only says “12V 7Ah x 1 nos” and does not name a chemistry. The two sources do not clearly agree, so if battery chemistry matters to you (for weight, lifespan or replacement cost), ask the seller or Zebronics support before buying.
Output waveform and transfer time
The MLS755 produces a simulated sine wave on battery, and the official page lists a transfer time of 4-8 ms. A simulated (stepped) waveform is common in budget UPS units and generally works with routers, DVRs, switch-mode adapters and most small electronics.
Some desktop PC power supplies with active PFC are commonly recommended for use with pure sine wave UPS units, because a stepped waveform can make them shut down or behave unpredictably on battery. The Amazon.in title mentions desktop PCs, but the official page frames this model around micro loads. If a PC is your main load, check your power supply maker’s guidance first.
Outlets, alarms and build
There are three output sockets and a 3-pin input plug. The official page does not name the socket standard. The Amazon.in listing mentions “IEC 320, RJ45” connectors and a Type M plug. The official page does not mention any RJ45 or network surge port, so do not assume network-line protection unless the seller confirms it.
Status is shown through three LEDs: green for AC mode, blinking orange for battery mode and red for a fault. The buzzer has distinct patterns: a beep every 10 seconds on battery, every second at low battery, every half second on overload and continuously on a fault.
Protection features listed by Zebronics include overload, short-circuit, over-discharge and over-charge protection, plus an internal fuse. The UPS also restarts automatically when mains power returns, which is useful for a router or CCTV system that should come back online without anyone pressing a button.
The official page gives the unit size as 10.5 x 27.6 x 14.4 cm (W x D x H) and the net weight as 3.9 kg. The Amazon.in listing shows the package size (14.2 x 32.6 x 21.3 cm) and a weight of 3,820 g, and describes the enclosure as metal. The official operating temperature range is 0-40 degrees C, and noise is listed as under 45 dB.
Who should buy it
- Homes that want Wi-Fi and fibre internet to survive short power cuts without rebooting
- Small shops and offices that need to keep a DVR and a few CCTV cameras recording
- Users with a small PoE switch, VoIP phone or smart home hub that must stay online
- Buyers in areas with unstable voltage who want AVR and a wide 140-300 VAC input range
Who should skip it
- Anyone who needs long backup for a desktop PC and monitor
- PC users whose power supply needs pure sine wave output
- Buyers who want USB or software-based auto shutdown, which the official page does not list
- Anyone with many outages a day, since recharge takes 6-8 hours to reach 90 percent
Alternatives worth comparing
- APC Back-UPS BX600C-IN: a 600VA unit with a maximum configurable power of 360 W, three India outlets, a lead-acid battery and AVR, according to Schneider Electric’s India product page.
- Geonix 600VA/360W UPS (GXUPS600VA): Geonix’s official page lists surge protection, automatic voltage regulation, auto restart, cold start, BIS approval and a 2-year warranty, although several specification fields on that page are incomplete.
- Geonix Trot R7 Pro Mini UPS: if you only need to back up a router or ONT, a DC mini UPS avoids the AC inverter altogether. The Amazon.in listing claims 4 x 2000mAh batteries and 12V, 9V and 5V outputs, and it is far smaller and lighter.
What to check before you order
- Model and colour: confirm the listing says ZEB-MLS755, 600VA / 360W, black.
- Your load: add up the wattage of everything you will connect and keep it well under 360 W, ideally far lower for longer backup.
- Plug fit: check that your devices’ plugs fit the UPS outputs. Routers and DVRs usually use small adapters, but bulky adapters can block neighbouring sockets.
- Battery type: ask the seller to confirm the chemistry, since the listing and the official page differ.
- Warranty: the Amazon.in listing states 1 year, carry-in to a service centre. Keep the invoice and register the product on Zebronics’ warranty page.
- First use: charge it fully, connect only essential devices, then test runtime once with mains switched off.
You can confirm the exact listing details here: See the Zebronics ZEB-MLS755 600VA UPS on Amazon.in. If you are also planning a home office, our guide to a work from home desk setup in India covers the other pieces.
Frequently asked questions
How long will the Zebronics MLS755 run a Wi-Fi router?
Zebronics does not publish a router-only runtime. Its claimed figure of up to 3 hours 45 minutes is for one DVR without a hard disk and three cameras without IR. Actual router runtime depends on the router’s and ONT’s power draw, so test it with your own equipment.
Can it run a desktop PC?
Its 360 W rating may cover a basic office PC, depending on its actual draw, but the output is a simulated sine wave and the product is designed around micro loads. Check your PC’s power draw and whether its power supply needs pure sine wave input.
Is the battery lithium-ion or lead-acid?
The Amazon.in listing says lithium-ion, while the official page only lists “12V 7Ah x 1” without naming the chemistry. Confirm with the seller or Zebronics before buying.
Does it have a USB port for automatic PC shutdown?
The official page lists only the three output sockets and the input plug. No USB or communication port is mentioned.
Final word
The Zebronics ZEB-MLS755 makes the most sense as a backup for routers, CCTV recorders and other small, always-on devices, where its wide input range, AVR and auto restart are useful. It is a weaker match for PCs because of its simulated sine wave output, slow recharge and modest single battery. Clear up the battery-type question with the seller, and you will know what you are getting. Check the current price of the Zebronics ZEB-MLS755 on Amazon.in.
Related reading on GadgetSoch: Artis AR-MINIDC-2 Review: 8800mAh Mini UPS for 9V/12V Routers, Specs and Limits and Amkette 7-in-1 USB-C Hub Review: 100W PD, 4K HDMI and the 30Hz Catch.
Sources
- Zebronics official product page: Zeb MLS755 (checked 17 October 2026)
- Amazon.in product listing for ZEBRONICS MLS755 (ASIN B0DJR652DF), listing data captured 17 October 2026
- Schneider Electric India: APC Back-UPS BX600C-IN (checked 17 October 2026)
- Geonix official page: UPS 600VA/360W GXUPS600VA (checked 17 October 2026)
- Amazon.in listing for Geonix Trot R7 Pro Mini UPS (ASIN B0GHYXCG1Y), listing data captured 17 October 2026
