Just a note for using Lithium-Ion batteries. Don't let them loose too much charge(easy to happen in a Nomad), as it can shorten their life span. If you let them completely die, they may not even recharge. I'd recharge them at the first sign of power loss, like the LED flickering. Also, unlike some rechargeables, it's a good idea to keep them topped off. Hope this helps everyone who gets the battery mod. Looks great, by the way.