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The meltdown of the Li-ion battery on the Boeing 787 that grounded now 50 planes worldwide is turning Boeing's dreamline into a nightmare. The choice for Li-ion batteries is obvious: high energy, lightweight and quick charge/discharge make them very suitable for use in planes. The backdrop is also clear - Li-ion cells are trouble makers and we as electronic engineers know why… don't we?

The meltdown of the Li-ion battery on the Boeing 787 that grounded now 50 planes worldwide is turning Boeing's dreamline into a nightmare. The choice for Li-ion batteries is obvious: high energy, lightweight and quick charge/discharge make them very suitable for use in planes. The backdrop is also clear - Li-ion cells are trouble makers and we as electronic engineers know why… don't we?

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If you really know why and if you have ideas or suggestions of how to get the Dreamliner's Li-ion problems solved, please tell us about it. What is a typical safety circuit you might expect? How to dimension Li-ion batteries, and more important, are Li-ion batteries really safe enough?