Bateria do kit "EV3" é distribuída com defeito.

LEGO Education has identified a circuit error in the LEGO MINDSTORMS Education EV3 rechargeable battery.
The error does not in any way relate to, or impact the EV3 programmable brick or the charger/transformer. The majority of the batteries that have been distributed do not have this error, but every battery in stock is now being retested to ensure it charges properly before shipping to customers, and new supplies are being sourced.
Customers who have received a rechargeable battery with this error will be provided a replacement free of charge.

Confira aqui o comunicado:
http://www.firstlegoleague.org/sites/default/files/LEGO/Message%20to%20Customers.pdf