Review on 🔋 Astron BB-30M Battery Backup Module by Scott King

I use a lot of Astron gear as a radio operator. Need a backup battery module, have checked many of these and luckily I am missing a screw when purchasing. Replacement Options - Return the device to the US for a replacement at a minimum cost of $50 USD via DHL/UPS. General ASTRON, please improve the quality. Now I need a "Columbus" screw that fits. Not happy at all.