Epoch Li-ion 4+

The app provides valuable information on the batteries and works well with multiple batteries. However, the battery connection and name is not saved so you have to re-select the batteries every time you close and reopen the app.

Furthermore, it is unable to filter out non-epoch devices so all the wireless devices in the area show up in the list making it even more inconvenient to find and select the right devices.

This can get very annoying when you want to use the app frequently to check the status of your batteries. This should be a relatively easy programming fix to save the device address so hopefully this will be fixed soon.

Yesterday, the app had the worst Bluetooth connectivity interface in the history of mankind, in that you could never reconnect upon app minimization, the app would show Bluetooth devices having nothing to do with Epoch, including Bluetooth headphones, etc., and it would “favorite” your device, so you’d have to select it every time. But at least once you got connected it would pull all the pertinent data from the battery. Today, it has an all new look to it….and it doesn’t work at all. Battery shows 0%, no voltage, no data whatsoever. So amazingly, despite the Bluetooth interface before, it was actually better than it is now.

I emailed customer support with my thoughts on the app a week ago, mostly as a test of their customer service department, and have not heard back. This is not good, and is very telling to me for what I can expect if I ever have a problem with the battery.

This app is a great way to break into the li-ion arena. It gives you what you need and more, showing state of charge, rate of charge, cell balance, alarms, everything you really could need plus more. It’s a little weak on range and does disconnect pretty quickly but it works great as a stepping stone to a more integrated system. Even now that I have the full Victron connection to my Epoch BMS, the Li-Ion app still gets used for some data that Victron doesn’t show. Keep the updates coming!