I have an Eotech 555.A65. It runs on AA lithium, alkaline, and rechargeable. Who makes a solid rechargeable that will have a long shelf light and hold up to abuse? I wont a back up solution that I can recharge.
http://www.eotech-inc.com/product.php?id=25&cat=1
http://www.eotech-inc.com/product.php?id=25&cat=1