UPS for $2 with 18650 Batteries – Backup Power for WiFi and Smart Home

Опубликовано 27 июня 2025, 17:54

Looking for a budget-friendly and efficient backup power solution for your smart home devices? In this video, I will introduce you to an uninterruptible power supply (UPS) that runs on dual 18650 lithium-ion batteries and can supply stable power to devices such as WiFi routers, cameras, and mini servers. It is an ideal choice for a smart home that ensures that your devices continue to operate without interruption even when the main power source is disconnected.
I will conduct detailed tests of the UPS, checking its performance with different output loads, testing the maximum current, as well as at what voltage level the device shuts down and at what level it charges the batteries. We will also test the overcharge and deep discharge protection for the 18650 batteries to understand how the system manages the safety of the batteries. I will show how the UPS handles a real-world load and whether this device can be used to power WiFi routers and smart home servers such as Home Assistant without any issues. The video also includes a look at the circuit diagram of the device to understand how key components such as the charge controller, DC-DC converter, and battery protection system work.
In this video:
- Connecting and setting up a UPS with 18650 batteries: how to properly connect and use the device.
- Testing under different loads: I will check how the UPS works under maximum load and how it copes with voltage instability.
- Testing protection against overcharging and deep discharge of 18650 batteries: I will test how the UPS protects batteries from damage due to too low or too high voltage.
- Testing with a WiFi router and Home Assistant server: we will find out how efficiently the UPS powers these devices and whether it can provide stable operation without interruptions.
- Real-life scenarios of using a UPS in a smart home: how this device can be used to provide uninterruptible power to your devices such as routers and mini-servers.
- Device schematic: a detailed analysis of the board components, including the charging controller, DC-DC converter and battery protection.

📺 Don't miss the tests until the end to find out how this compact and affordable device on 18650 batteries for $2 can become a real assistant for your smart home.

👉 UPS 5V/9V/12V 18650 LiIon Battery 1 slot - s.click.aliexpress.com/e/_oCMj... or alii.pub/78dnmc?erid=2SDnjdo1K...
👉 UPS 5V/9V/12V 18650 LiIon Battery 2 slots - s.click.aliexpress.com/e/_oozb... or alii.pub/78dnn4?erid=2SDnjewik...
👉 UPS 5V/9V/12V 18650 LiIon Battery 4 slots in case - s.click.aliexpress.com/e/_oEjL... or alii.pub/78dnnw?erid=2SDnjdzsY...
📌 Telegram channel: coupons, new products, promotions @Lubops - t.me/Lubops
💬 Topics for chatting about smart home - t.me/china_smart_home
🌐 China in the smart home Facebook - facebook.com/EvgenLubops
📣 Follow sales and new products in X: x.com/LubopsEvgen

🎁 Support the channel: github.com/EvgenLubops/Donate - all features + crypto wallets
DONATELLO: donatello.to/Lubops
PayPal: paypal.com/donate/?hosted_butt...
Buy Me A Coffee: buymeacoffee.com/EvgenLubops

00:00 – 01:30 Introduction
01:30 – 02:48 Specifications
02:48 – 05:39 UPS Appearance
05:39 – 03:18 Circuitry
11:12 – 13:30 UPS Testing
13:30 – 13:39 Short Circuit Test
13:39 – 15:16 Maximum Load Tests
15:16 – 17:02 Connecting a WiFi Router and Home Assistant Mini PC
17:02 – 18:12 Minimum Voltage Test for 18650
18:12 – 19:20 Maximum Current and Voltage for Charging 18650
19:20 – 22:51 Conclusions

👍 Like if the video was useful, and don't forget to subscribe to the channel so as not to miss other reviews, guides and tests on smart home systems and smart electronics!
🔔 Subscribe to the channel so as not to miss new videos! In the description under the video are all the links to the products, as well as links to my Telegram channel, where you will find new products from the world of smart home, useful tips and discussions.

#UPS, #smarthome, #18650, #backuppower, #Router #WiFi, #12V, #uninterruptiblepowersupply, #gadgets #Tests #Review #Lubops