Whether taking an epic vacation or working all day at a tradeshow, the NRGBAR is the perfect device to bring along. With a compact size and a premium grade lithium ion battery, the NRGBAR will be something your clients can smile about, while still staying budget friendly. 2200 mAh. Premium Grade Lithium Ion Battery. includes charging cable and detachable keychain. UL, CE & Rohs Certified. Built-in short circuit & surge protection. Custom Packaging Available at 250 Units (via overseas)