Top critical review
Would have been great, but battery status is useless.
Reviewed in the United States on October 3, 2018
The problem with this unit is that it gives you a false sense of security.
The battery status LED will be green, even when the battery is basically toast. It's not until the unit actually tries to run the backup pump that it will fail and let you know the battery is bad (in a very strange way), and at this point, when the power is out at 1AM, it's too late.
What it SHOULD do:
Actually load test the battery at least once a day, and alarm like hell if the battery needs replacement.
What it ACTUALLY does:
Says the battery is good, until you need it, then tries to run the pump, briefly flashes red and yellow, goes back to green, tries to run the pump, briefly flashes red and yellow ... ... ...
Our basement almost flooded because of this. Luckily I had a 1500w pure sine wave battery back-up (UPS) for a computer on hand and was able to get the main pump to run until the power came back on. (The UPS was NOT meant for running a motor. Using it this way destroyed a $600 UPS, but saved tens of thousands of dollars of damage to our basement.)
The battery charger for this unit runs consistently at 14.1+ volts. This will dramatically shorten the life of your battery and is a serious design flaw! (It's why my ~$200 battery died in under 2 years.) The charger should switch to a float charge of ~13.6 volts after the battery is fully charged.
TLDR; It works great, until it doesn't. And when it doesn't, it's with no warning.