The aircraft have been grounded for three months because of problems with its battery system.

该机型因电池系统的问题被禁飞三个月。

Supporters call these systems " the world's largest batteries" because they hold large amounts of energy.

支持者称这些系统为“世界上最大的电池”，因为它们可以储存大量的能量。

The band hopes to deploy the world's first tour battery system, made from 40 repurposed BMW electric car batteries.

该乐队希望布置世界上第一个巡演电池系统，该系统由40个宝马电动汽车电池改装而成。

NPR's Sharo Koli reports yesterday's fly is part of the original tests and it certified a real work battery system.

NPR新闻的夏洛·科里报道昨天的飞行是原始测试的一部分并确认一个实际工作电池系统。

The Tesla battery system now holds the title for the largest lithium-ion battery in the world.

特斯拉电池系统现在拥有世界上最大的锂离子电池的称号。

And the solar panels up above could be supplemented with state-of-the-art battery systems that level out solar supply and user demand.

上面的太阳能电池板可以补充最先进的电池系统，以平衡太阳能供应和用户需求。

He added that less powerful sodium-ion batteries are likely to be used together with lithium-ion technology to bring down the overall cost of battery systems.

他补充说，功率较小的钠离子电池可能会与锂离子技术一起使用，以降低电池系统的总体成本。