The portable power company has closed its series C funding with the SBI Jeffries Asia Fund partnership and EDBI joining existing investors including Schlumberger.

US-based battery developer Contour Energy Systems closed its series C funding round on Thursday from a consortium including oilfield services company Schlumberger.

Alongside Schlumberger in the $20m C round were joint venture partnership SBI Jefferies Asia Fund, investment firm EDBI,  and venture capital firms CMEA Capital, Harris & Harris Group and US Venture Partners.

Contour, when known as CFX, raised $14.2m in its series B round, in February 2010, from Schlumberger, CMEA, Harris & Harris and US Venture. The…