Learn to build your own HW, if you are going to buy never in any circumstance buy from a jew.
nostr:nevent1qqs8vahz8nrs3ppuafcecus7pfzygezzlnle8qt3rxfk7p2jw7k5qjspz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygpm8fpdxn8s59qz6xx4xmya9tpwk8rqrx532wl9wzzvs9jaryhry5psgqqqqqqs7cfldw 

 Do you think they were a "special batch" or they can turn any pager battery into a "mini grenade"?

I am still wondering how they did the attack. 

 It looks like a directed attack, it would be very unlikely all those batteries would explode with such reliability and do that kind of damage without some explosives in them. 

 It’s a supply chain attack, maybe a distributor was compromised or even a member of the group could betray them 

 https://media.tenor.com/WDBWRBzmG1cAAAAM/don%27t-do-that-vincent-anderson.gif  

 That's why open source hardware is the only acceptable way. Don't trust, verify!