Who we are


Energy Sales was founded in the heart of Silicon Valley in 1972 by Robert Wilke, an MIT graduate and has been serving customers from all major industries throughout North America since. We are a factory authorized, value-added assembler and distributor specializing in the most widely accepted brands of batteries. We distribute cells used in the manufacturing of custom battery packs to a range of  customers from small to mid-size companies, large enterprise, OEM, and contract manufacturers. We also distribute a full line of battery-related products including battery chargers and analyzers, battery management ICs, and charging modules.


Our strength lies in our service and commitment to our customers’ needs. We support our customers with application engineering assistance, custom assembly design, production planning, warehousing, just-in-time delivery,  and quick turn-around on assemblies. We offer guidance on alternative chemistries, packaging and Hazardous Materials shipping. We manufacture high quality battery packs made to customer’s specifications. We service the Aeronautics, Government, Defense, Industrial & Consumer Applications, Instrumentation, Medical, Oceanography, Aerospace, Medical, Oceanographic, Space, Utilities, among others.


Since its inception, Energy Sales has expanded into two states serving the Western region  and beyond from its headquarters in Sunnyvale, California, and branch in Redmond, Washington.


From a simple case of flashlight batteries to a sophisticated custom designed battery pack, we are your energy specialists.


Visit one of our offices, or contact us today.