5 ms·
We get a lot of power failures. I use laptops, but for other non-battery powered equipment, I have a BN1500M2-CA with a raspberry pi running debian plugged into
by mmphosis 3y ago
We get a lot of power failures. I use laptops, but for other non-battery powered equipment, I have a BN1500M2-CA with a raspberry pi running debian plugged into one of the USB charging ports and the USB Data Port cable connected from the UPS to the raspberry pi. It keeps my ISP's 185 watt router going for longer than the ISP's switches will stay up when the power is out. I get more than 3 hours with the router and a 4K monitor plugged into the UPS. I remember seeing NUL characters in the text of an old log, but otherwise apcupsd works well:
2024-01-30 08:15:13 -0800 Power failure.
2024-01-30 08:15:19 -0800 Running on UPS batteries.
2024-01-30 08:20:06 -0800 Mains returned. No longer on UPS batteries.
2024-01-30 08:20:06 -0800 Power is back. UPS running on mains.
2024-02-04 12:52:58 -0800 Power failure.
2024-02-04 12:53:04 -0800 Running on UPS batteries.
2024-02-04 12:54:04 -0800 Mains returned. No longer on UPS batteries.
2024-02-04 12:54:04 -0800 Power is back. UPS running on mains.
2024-02-18 12:10:13 -0800 UPS Self Test switch to battery.
2024-02-18 12:10:21 -0800 UPS Self Test completed: Battery OK
- xp84 3y ago> ISP’s 185 watt router Wait, what? Does it also heat your room? How can it be so power-hungry?
- mmphosis 3y agoI call it "the chimney."
- p1mrx 3y agoA Starlink terminal uses less than 185W, and that talks to space while melting snow.
- deleted 3y ago[deleted]
- bongodongobob 3y agoI'd bet the power supply is just rated at 185W. No fucking way is a router actually drawing that much power.
- tenebrisalietum 3y agoCarrier grade routers do. https://www.juniper.net/us/en/products/routers/mx-series/mx304-universal-routing-platform/specs.html https://www.juniper.net/us/en/products/routers/mx-series/mx3... Random example from a search. According to a calculator I plugged a few values in, it's 2880 watts, but not sure I computed it correctly.
- djbusby 3y agoP=I * E 2880w = 60A * 48VDC It checks out.
- bongodongobob 3y agoI mean this is hacker news, but no one is talking about that beast. "My vehicle has 3000 horsepower." "That doesn't sound right." "Ackshually trains do. Maybe he drives a train." "..."
- zettabomb 3y agoMan I hate to be that guy... but I do in fact have a blade chassis in my basement that can pull 6kW. I didn't even blink at 185W for a router, one of my switches can pull 125-200W alone. Some of us really do have that stuff just sitting around.
- Dylan16807 3y agoThe post clearly says ISP provided. So sure you have that, but you're doing the train thing. They weren't talking about that class of device.
- deathanatos 3y agoMy fairly beefy laptop's PSU is rated at 135 W. It includes an entire GPU. My own router's PSU is rated at 36 W, for comparison.
- tenebrisalietum 3y agoIt sounds like OP works at or is an ISP.