Took my 2006 H2 to a random tyre shop in Ras Al Khor last week because the battery was cranking slow and the guy swore he knew what he was doing, put in some generic one and now the voltage gauge keeps dipping whenever the ac compressor kicks in. Honestly kicking myself for not doing my own research first, I later found this page batteryzoneuae.com/hummer-battery-replacement that actually lists the proper specs per model and now I realize the one they gave me is way under what the manual calls for. Kinda worried they messed something else up too but I guess step one is getting the right battery in there before the summer heat fries everything. Anyone else been through this with their Hummer in Dubai and figured out a decent garage that stocks the proper ones?