Switches dying during bad weather

[Kelvin Smith]

I have a client that has multiple switches through out their 7 building location. Each switch is on a battery backup, plugged into the battery protection side. During bad weather they always seem to lose at least one switch. I have tried different brands of switches, different brands of power supplies and even suggested to the client to have an electrician do an inspection on their lines. Are there any best practices that I may be missing for network device usage during a storm? Any suggestions would be highly appreciated. Thanks in advance.

[hbel...@afterhourscr.com]

Are these PoE switches?