They going to tear open the battery while they are at it? It’s not like there’s going to be a small lump labeled “RDX” with wires sticking out of it.
While they’re at it, why not incorporate the explosive into the body of the device? Has no one else seen Up in Smoke?
I feel like a broken record reminding people that the TAO (Tailored Access Operations, now Computer Network Operations), part of the NSA, has been doing this for 20 years. Except they implant spyware instead of explosives. Probably.