zanydroid
Solar Wizard
If you have an off-grid system with RSD, you need a dark start battery anyway. To do otherwise would be foolish (we can debate whether someone true blooded off-grid would kowtow to installing RSD)
You can use a dark start battery to charge your phone or laptop.
Also, don't a lot of technicians carry ruggedized laptops, phones, and tablets now, to do serious maintenance all over the place? I don't think every workflow has a device-free backup. The backup is a backup device / backup power for those devices, or a limited set of settings that you can control from a button UI
You can use a dark start battery to charge your phone or laptop.
Also, don't a lot of technicians carry ruggedized laptops, phones, and tablets now, to do serious maintenance all over the place? I don't think every workflow has a device-free backup. The backup is a backup device / backup power for those devices, or a limited set of settings that you can control from a button UI