It has been discussed here and KZ mentioned it on twitter. To try to put it into a nutshell... the battery that was in TH's RAV4 was not the right battery for her vehicle. It didn't fit properly. The battery that was in the RAV4 is a battery that is typically found in Crown Victoria's and Jeep Wranglers (and other vehicles), and of course, some LE use Crown Vic's (that is from the poster, not KZ, she was more vague). The poster that sent the info to KZ has posted in the last few days that KZ's team has been keeping him updated, but he is kind of cryptic in his posts. It sounds like Interstate actually informed them that there is an additional number on the battery which would help determine where it went and that they have indeed provided that information. This poster also seems quite confident that it went somewhere that has a fleet of vehicles, which would be like a city/county/gov't and I guess maybe a bigger business?