Braille B2015 L=6.8", W=3.4", H=6.1" Weight =15 lbs this is 14.5lbs lighter than stock! Deka EXT20L L=6.9, W3.4", H=6.1" Weight 17 lbs 14lbs lighter than stock! ...
The Odyssey PC680 battery is 14.1lbs lighter than stock! Odyssey PC680 Battery avaliable here: https://www.amazon.com/Odyssey-PC680-Battery/dp/B0002ILK6I
RLS / NCI VoltPhreaks VPH750 Battery Bracket Save 24.25lbs by switching from the OEM battery to the ultra premium VoltPhreaks VPH750. Purchase the VoltPhreaks VPH750 here: https://email@example.com/ssl/catalog/product_info.php?cPath=1_5&products_id=81