The California researchers are studying lithium ion batteries, but in the next few years plan to begin testing new sodium batteries.

加州的研究人员正在研究锂离子电池，但在未来几年计划开始测试新型钠电池。

That doesn’t help you right away, since testing all six batteries could still take as many as 15 tries.

这不会立即帮助您，因为测试所有 6 块电池仍可能需要多达 15 次尝试。