---
product_id: 372818820
title: "Eaton 3S Mini – DC UPS 36 W – 3SM36B – DC outputs 9/12/15/19 V, 4 barrel tips – Li‑ion – Black/White (B092TG9M7C)"
brand: "eaton"
price: "R$1326"
currency: BRL
in_stock: true
reviews_count: 12
category: "Eaton"
url: https://www.desertcart.com.br/products/372818820-eaton-3s-mini-dc-ups-36-w-3sm36b-dc-outputs
store_origin: BR
region: Brazil
---

# 36W power output Up to 5h runtime 4 versatile DC barrel tips Eaton 3S Mini – DC UPS 36 W – 3SM36B – DC outputs 9/12/15/19 V, 4 barrel tips – Li‑ion – Black/White (B092TG9M7C)

**Brand:** eaton
**Price:** R$1326
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your peace of mind — never miss a beat when the grid goes dark!

## Quick Answers

- **What is this?** Eaton 3S Mini – DC UPS 36 W – 3SM36B – DC outputs 9/12/15/19 V, 4 barrel tips – Li‑ion – Black/White (B092TG9M7C) by eaton
- **How much does it cost?** R$1326 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/372818820-eaton-3s-mini-dc-ups-36-w-3sm36b-dc-outputs)

## Best For

- eaton enthusiasts

## Why This Product

- Trusted eaton brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Silent Operation:** Whisper-quiet UPS ensures uninterrupted productivity without distracting noise.
- • **Compact & Stylish:** Sleek metal enclosure fits discreetly in any modern workspace or home setup.
- • **Reliable Power Backup:** Keep your essential devices online during outages with up to 5 hours of battery life.
- • **Plug & Play Simplicity:** Easy installation with included barrel tips—get protected in minutes, no tech hassle.
- • **Universal Compatibility:** Four DC output connectors (9/12/15/19V) adapt seamlessly to routers, IP cameras, and smart home hubs.

## Overview

The Eaton 3S Mini UPS 3SM36B is a compact, lithium-ion powered uninterruptible power supply delivering 36W with selectable DC outputs (9/12/15/19V) via four barrel connectors. Designed for professional-grade backup of routers, IP cameras, and smart controllers, it offers up to 5 hours of runtime in a sleek, silent metal enclosure measuring just 13.6 x 9.5 x 3 cm. Ideal for millennial managers seeking reliable, stylish power continuity during outages.

## Description

Buy

Review: Back up power for a BT modem? This seems to do the trick. - I live in an area subject to irregular, but relatively frequent, power cuts. Four in the last month, each for a variety of reasons, and each lasting a couple of hours or so. The usual apologies from the supplier (Northern Powergrid) but no confidence matters will improve anytime soon. When they're blaming squirrels you know you're in trouble... Unfortunately, the mobile networks go down too, so our entire village goes off the comms grid. With BT digital voice allegedly coming next year we will be deprived even the trusty landline. So some kind of contingency makes sense, if only for emergencies. There are any number of these units on desertcart, and you have to pick one, so the Eaton 3S mini was it. Arrived in a couple of days. Easy to set up. Although it has 4 dc power outputs the default setting is 12V, fine for the BT hub we have. There are 4 barrel connectors included, one being 3.00mm which is compatible with the modem. It fits, and that's good enough for me. Took about 10 mins max to install, let it charge overnight, then switched off the mains power to the hub this morning. The latter continued to function. So far so good. We'll have to wait for another power cut to test in in real world conditions, but assuming the back up batteries in the BT street boxes are good for a couple of hours then we should be ok. We'll see. Update 4 July 2024 Another power cut this afternoon. 6 now in 7 weeks. Step forward Northern Powergrid... We were reconnected to the mains supply after 1 hour 45 mins or so. The backup battery kept us connected but judging by the status lights on the front I guess we had another 15 mins tops. So 2 hours powering a standard BT modem
Review: Batteries failed prematurely - may have no minimum voltage cut-off - I own three of these units. Two worked great during a power cut yesterday, but one of them instantly dropped the output power. They are all around 12 months old. The one unit which failed had actually been fully discharged once, several months ago during a previous power cut. The other two units did not fully discharge, because they have very light loads (~3 watts vs the ~9 watts attached to the failed unit). Both of the lipo cells inside (TP LI-ION 3.7V ICR18650 2200mAh MH46259 UD020) now read at roughly 0.125 volts, so my /assumption/ is that these are unprotected cells and the unit itself does not have a low-voltage automatic cutoff. This is extremely problematic, because whenever there's a lengthy power cut, there is a solid risk that the unit itself will then be bricked unless you want to manually replace the lipo cells inside. So I'm afraid I need to give the "overall rating" as just one star because of this. Sorry, Eaton. Unless I'm mistaken and the one unit is faulty, then you will need to release a revision 2.0 which includes proper cell protection. Ideally they would auto power-off at, say, 20% power remaining. Perhaps even make the percentage/voltage configurable with a DIP switch somewhere, but obviously a DIP switch would add slightly to the materials cost & the plastics would need redesigning, so a straightforward X% cut-off would be the most reasonable thing to implement.

## Features

- Mini UPS to secure power continuity for connected equipment during power outages. An affordable and compact UPS providing power to Internet routers, IP cameras, Home assistants and Smart controllers.
- 4 output connector types to adapt to your equipment requirements(3.5x1.5mm / 4.75x1.7mm / 5.5x2.1mm / 5.5x2.5mm)
- Lithium-ion batteries enabling runtime from 40 minutes to more than 5h
- Power rating 36W - Possible output voltages: 9/12/15/19 V DC
- Super compact, silent and stylish design - Dimensions: 95.5(L) x 30(H) x 136(P) mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B092TG9M7C |
| Amperage | 0.6 Amps |
| Battery Average Life | 150 minutes |
| Battery Cell Type | Lithium Ion |
| Battery cell composition | Lithium Ion |
| Best Sellers Rank | 4,254 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 4 in Computer Uninterruptible Power Supply Units |
| Brand | Eaton |
| Brand Name | Eaton |
| Colour | Black, White |
| Connector Type | 3.5x1.5mm |
| Country of Origin | China |
| Customer Reviews | 3.6 out of 5 stars 189 Reviews |
| EU Spare Part Availability Duration | 40 Minutes |
| Enclosure Material | Metal |
| Form Factor | Compact |
| Frequency Range | 50/60 Hz (± 3 Hz) |
| Input Voltage | 12 Volts |
| Item Dimensions | 13.6 x 3 x 3 centimetres |
| Item Dimensions D x W x H | 13.6D x 9.5W x 3H centimetres |
| Item Type Name | Eaton Mini UPS - 36W - output 9/12/15/19V DC - Uninterruptible Power Supply (UPS) |
| Item Weight | 0.61 Kilograms |
| Manufacturer | Eaton |
| Manufacturer Part Number | 3SM36B |
| Material | Metal |
| Maximum Power | 36 Watts |
| Model Number | 3SM36B |
| Number of Items | 1 |
| Number of Outlets | 4 |
| Output Current | 0.6 Amps |
| Output Voltage | 12 Volts (DC) |
| Output Wattage | 36 Watts |
| Power Plug Type | No Plug |
| Product dimensions | 13.6D x 9.5W x 3H centimetres |
| Runtime | 5 hours |
| Specification Met | VDE |
| Unit Count | 1.00 count |
| Voltage | 12 Volts |
| Wattage | 36 watts |

## Product Details

- **Battery cell composition:** Lithium Ion
- **Brand:** Eaton
- **Colour:** Black, White
- **Product dimensions:** 13.6D x 9.5W x 3H centimetres
- **Voltage:** 12 Volts

## Images

![Eaton 3S Mini – DC UPS 36 W – 3SM36B – DC outputs 9/12/15/19 V, 4 barrel tips – Li‑ion – Black/White (B092TG9M7C) - Image 1](https://m.media-amazon.com/images/I/71tFr8QVJES.jpg)

## Available Options

This product comes in different **Size, Version For Country** options.

## Questions & Answers

**Q: What is the manufacturer warrantee for this ups ?**
A: Thank you for your question. The 3S Mini comes with a 2 year manufacturer warranty.

**Q: Does it really have a power factor of just 0.4?**
A: No  all this means is it will provide 9 minutes of full power for 550 Watts of items,  should domestic power fail.  So if for example if you were powering a 150watt pc   ,you would have enough power for 27 minutes while the domestic power is off

**Q: Anyone connects their ups via an extension lead? which extension lead would you recommend me buying for this? thanks.**
A: A surge protected BS1363 extension of an appropriate length to suit your needs. Master plug make some reasonable ones

**Q: My orbi rbr50 router is 12v 3.5a will this provide enough power to run it? description says 12v 3a, so should i assume no?**
A: Thank you for the question. This UPS would not be sufficient to power your router. I would recommend taking a look at our 3S 550B UPS as a potential alternative https://www.amazon.co.uk//Eaton-550B-UPS-Uninterruptible-Interface-Black-white/dp/B0B3RS2986

## Customer Reviews

### ⭐⭐⭐⭐⭐ Back up power for a BT modem? This seems to do the trick.
*by S***P on 24 June 2024*

I live in an area subject to irregular, but relatively frequent, power cuts. Four in the last month, each for a variety of reasons, and each lasting a couple of hours or so. The usual apologies from the supplier (Northern Powergrid) but no confidence matters will improve anytime soon. When they're blaming squirrels you know you're in trouble... Unfortunately, the mobile networks go down too, so our entire village goes off the comms grid. With BT digital voice allegedly coming next year we will be deprived even the trusty landline. So some kind of contingency makes sense, if only for emergencies. There are any number of these units on Amazon, and you have to pick one, so the Eaton 3S mini was it. Arrived in a couple of days. Easy to set up. Although it has 4 dc power outputs the default setting is 12V, fine for the BT hub we have. There are 4 barrel connectors included, one being 3.00mm which is compatible with the modem. It fits, and that's good enough for me. Took about 10 mins max to install, let it charge overnight, then switched off the mains power to the hub this morning. The latter continued to function. So far so good. We'll have to wait for another power cut to test in in real world conditions, but assuming the back up batteries in the BT street boxes are good for a couple of hours then we should be ok. We'll see. Update 4 July 2024 Another power cut this afternoon. 6 now in 7 weeks. Step forward Northern Powergrid... We were reconnected to the mains supply after 1 hour 45 mins or so. The backup battery kept us connected but judging by the status lights on the front I guess we had another 15 mins tops. So 2 hours powering a standard BT modem

### ⭐ Batteries failed prematurely - may have no minimum voltage cut-off
*by A***A on 9 July 2023*

I own three of these units. Two worked great during a power cut yesterday, but one of them instantly dropped the output power. They are all around 12 months old. The one unit which failed had actually been fully discharged once, several months ago during a previous power cut. The other two units did not fully discharge, because they have very light loads (~3 watts vs the ~9 watts attached to the failed unit). Both of the lipo cells inside (TP LI-ION 3.7V ICR18650 2200mAh MH46259 UD020) now read at roughly 0.125 volts, so my /assumption/ is that these are unprotected cells and the unit itself does not have a low-voltage automatic cutoff. This is extremely problematic, because whenever there's a lengthy power cut, there is a solid risk that the unit itself will then be bricked unless you want to manually replace the lipo cells inside. So I'm afraid I need to give the "overall rating" as just one star because of this. Sorry, Eaton. Unless I'm mistaken and the one unit is faulty, then you will need to release a revision 2.0 which includes proper cell protection. Ideally they would auto power-off at, say, 20% power remaining. Perhaps even make the percentage/voltage configurable with a DIP switch somewhere, but obviously a DIP switch would add slightly to the materials cost & the plastics would need redesigning, so a straightforward X% cut-off would be the most reasonable thing to implement.

### ⭐⭐⭐⭐ Good effort, edited 2years later
*by S***E on 6 January 2022*

Edit. 2 years later I’ve repeated some full discharge and recharge tests, including discharging it at the max rated 36Watts and unlike others still have has no problems with the recharge sequence. The failure of the low cell voltage protection reported by some hasn’t occurred on my unit. This Eaton3S and the APC CP12036Li remain the best options available for anyone looking for a small DC UPS with a recognised name. Nicely made mini UPS from a recognisable name, with a 2 year warranty its got the feel of a quality product. Well documented. It has some nice features, like switchable output voltage level and a relatively high supply rating of 36Watts. I've run some12V load tests when on battery and the output voltage only dropped from 11.9V@0.5A to 11.3V@3A. The DC output level was also maintained well as the battery ran low . By including the AC/DC conversion inside the unit there is only space to include 2 off 2200mAH lion cells, so overall capacity is a fairly small but usable 11.9Wh (measured). So it should be able to run a typical small router (5-6Watts) for around 2hours, that's probably long enough for most typical mains power interruptions. The battery recharge rate is a relatively low 4Watts so once mains power is restored it does take around 5Hours to fully recharge . Once fully charged the UPS appears to use <1W to manage its own functions To make it a better prospect than its competitor MiniDC UPS What it ideally needs is either larger internal batteries or perhaps the ability to recharge from an external powerbank. The case would benefit from some mounting holes and there's also no audio warning to indicate 240V power failure. It is however one of the few MiniDC UPS that I'd be content to leave running unattended in my house 24/7/365.

## Frequently Bought Together

- Eaton 3S Mini UPS 36W 9/12/15/19 DC to protect Internet routers, IP cameras, home assistants and smart controllers
- APC Back-UPS Connect - CP12036LI - 12V DC 36W Lithium-Ion Mini UPS, designed for Routers, Smart Home Controllers, VoIP devices, Networking gear and more

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-09-17*