Seeo, a California-based company that makes lithium polymer batteries, has closed a $17M round led by new investor Samsung Ventures, the investment arm of Samsung Group. Existing investors Khosla Ventures and GSR Ventures also participated. This brings the total Seeo has raised so far to $40.6 million. Seeo’s rechargeable lithium batteries are built using a proprietary non-flammable polymer electrolyte it calls “DryLyte,” which it claims is safer than traditional lithium-ion batteries.