Hi, I have a 2017 Lexus LX570 that is due for replacement of the wonderful original equipment Panasonic starter battery that is still going reasonably strong. I want to replace it with an X2Power Premium AGM and I've read postings norting that I would need to increase charging voltage with an adition like VoltageBooster PRO Spark. I see that it is only specified for the LX570 through model year 2015. Also I am measuring 14V to 14.1V charging at idle. Was a change made to the LX570 charging system after 2015 that precludes the need for Voltage Booster with AGM battery? Thanks for any experience & advice that you could offer.