A power cut doesn't have to mean your router drops offline, your CCTV stops recording, or your Arduino project loses state. The YX850 automatically switches to a backup battery the moment external power fails — in about 0.7 seconds — then switches back and resumes charging once power returns. No manual intervention, no lost uptime.
Ready to keep your setup running through outages? Shop the YX850 now
How the YX850 Works
- Automatically detects circuit voltage across a wide DC 5–48V range
- Charges the connected battery whenever external power is present
- Switches instantly to battery backup (≈0.7s delay) the moment external power is lost
- Includes reverse and over-discharge protection
- Handles up to 10A of continuous load
Full Specifications
Specification | Value |
Model | YX850 |
Input Voltage Range | DC 5–48V (auto-detecting) |
Max Load Current | 10A continuous |
Battery Charging | Yes, from external DC when available |
Switchover Time | ≈0.7 seconds |
Operating Temperature | -25°C to +85°C |
Operating Humidity | 5%–95% RH, non-condensing |
Dimensions | 61 × 30 × 18 mm |
Weight | ≈22 g |
Real Use Cases — Where This Module Actually Helps
Keeping Your Router or Modem Online During Outages
A power cut usually means losing internet the moment it happens — the YX850 keeps your router running on battery until power returns.
Uninterrupted CCTV & Security Camera Power
Security systems are most valuable exactly when the power's out. The YX850 keeps cameras recording through an outage instead of leaving a gap in the footage.
Backup Power for Off-Grid Solar Setups
Works as the automatic switch between your solar/DC supply and a backup battery, without any manual switching.
Power Continuity for Arduino/ESP Projects
Keeps a running project (data logging, sensors, automation) from losing state every time the mains supply drops.
Building a backup power setup? Pair the YX850 with a compatible battery
What You'll Need Besides the Module
- A compatible battery — the YX850 works with lead-acid or lithium batteries within its 5–48V range. RAM stocks a Sealed Lead Acid Battery 12V/7Ah that's rated specifically for UPS and emergency backup use — a direct match for this module.
- A DC power source within the 5–48V input range for the primary supply.
Browse the full Batteries & Chargers collection for more backup power options.
Frequently Asked Questions
Does the YX850 work with both lead-acid and lithium batteries?
Yes, it works across its full DC 5–48V input range, which covers both common lead-acid and lithium battery voltages.
What's the maximum load current it supports?
10A continuous.
How long does the switchover to battery actually take?
Approximately 0.7 seconds — fast enough that most connected devices (routers, cameras) don't lose state.
Does it charge the battery, or just switch to it during an outage?
Both — it charges the connected battery whenever external power is present, and switches to it automatically when power is lost.
Does it need any manual setup?
No — it's plug and play. It auto-detects circuit voltage within its supported range.
Don't let a power cut take your devices offline. Get the YX850 today