Pale Blue: Ditch Disposables for Good. Pale Blue is the battery company that wants you to buy fewer batteries. Pale Blue offers the world’s best lithium polymer rechargeable batteries to ditch disposables for good. Each battery is feature-rich with a mirco USB charging ports, LED charging indicators, are 40% lighter than traditional batteries, and have incredible charging speed. Available in AA, AAA, 9V, and D batteries.