What the heck is this thing on my battery?

I'd take it down to the Ship Channel and put it on a slow boat to China.
That would Really F With Their Heads!!
Or maybe take it with the next time I went Offshore Fishing.
And tie it to one of the unmanned rigs.....

 

Same BS with LoJack. Dealer buys them for $50 and upsells them between $600 to $800+. Years ago, a Honda dealer tried to force my wife to purchase the LoJack on the car she wanted for $800. We said no, and told then to remove the device. While prepping the vehicle to sell to us, about 20 min later, said the vehicle was not available as someone had placed a down payment hold on it that they overlooked. They then tried to sell us another vehicle with no LoJack but had the $600 interior protective coating. When we looked inside the vehicle, it was still wet and we got it all over us. We turned them down and left. Dealer antics determined to empty your wallet.

 

Dealers get insurance discounts for having these on their inventory (easier to recover stolen vehicles). Then they discovered they could pass the cost (and then some) along to customers by selling an “advanced security package.” If they refused to take it off, I’d renegotiate the vehicle price by $1250 less than previously agreed to cover the cost of they are charging you, plus to cost to remove the ting.