I've had good luck with APC inverters. I have a WISP site that experienced a failure of a VERY (+$2k) expensive ICT switching power supply/batter charger. Replaced with a $279 APC750 which efficiently runs the entire cabinet and a new pair of Interstate AGM 100a batteries (under $200 each vs. $700 each for orange). Has been running flawlessly for 3 years now without failure. Batteries still load test within spec (although I've recommended replacing them due to age and exposure to extreme temperatures). I actually expected the APC750 to have cooked them by now, but to my surprise, it hasn't been an issue.?
