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The original was posted on /r/homelab by /u/Cartossin on 2025-12-22 13:57:56+00:00.

The UPS industry has stagnated. UPS’s typically use lead acid batteries which you’d be lucky to get 5 years out of. Also, you’re very limited on the total power storage you can buy. Generally anything over 2100va with about 200-500wh can’t be run on a 120v 15a cirtcuit.

There is a new product category. These things have started as camping batteries, but all the major makers have added a ups mode that cuts over as fast as your typical cheap UPS. (<10ms). I just bought an oukitel bp2000 with 2048wh for only $650. It will last for 3 hours with my ~500w workload. It is 3x the cost of a 1500va costco backup but 10x the power/runtime.

So is this just more runtime for the $$? No. The key win here is longevity. The LiFePO4 chemistry can do thousands of cycles. With typical UPS usage; this thing could last 20-30 years with >80% original capacity. So trash your lead acid trash and step into the LiFePO4 world. The UPS industry will catch up eventually, but right now, it’s been leapfrogged.

P.S. One more thing: Some of these can be directly connected to solar panels or expanded to more batteries. I could get up to 16kwh on mine.