While some of the information that has been released so far may be fairly innocuous, ‘the authorities’ have been releasing quite a lot of detailed information about how they tracked down the bomber, which may serve to alert other IQ-challenged wanna-be copycats as to what to avoid.
The ‘very unique’ assault batteries, for example, is a tip-off that didn’t necessarily have to be widely disclosed. (Inquiring minds wonder - were they perhaps 18650-style or similar lithium cells with solder/welding tabs?)
I’m of two minds on that, though - for example, on the one hand, transparency by ‘the authorities’ is important - on the other hand, although giving out actionable information about investigative techniques and evidence that led to the bomber’s demise might have been inevitable during court proceedings had they captured the perp alive, since they didn’t get him alive, it’s not clear that it served any valid purpose to release such info so widely.
I think that I’d err on the side of transparency, however, because as we’ve seen repeatedly, without that, the presumption is that ‘the authorities’ have all-too-often committed errors or outright unspeakable crimes that they’ve managed get away with due to CYA secrecy. We’ve certainly seen that occur all throughout the Obamunist regime’s tenure (Fast and Furious, FISA-gate, etc.).
At this point, anybody who doesn’t already know that this is a pervasive-surveillance society where legal protections mean next to nothing to ‘the authorities’ must not be paying attention.
I would assume they are the 3 volt Chinese batteries that you find in Vape pens and high power batteries. Something like a 18650 or bigger. Not like these things are rare when you can buy them buy the dozen on amazon or ebay.