Tesla Motors Inc. has said that its deal with Panasonic will see the electric vehicle (EV) manufacturer tweak the chemical formula of its lithium-ion (Li-ion) batteries. The California-headquartered company yesterday signed a co-operation agreement with Panasonic that provides that the Japanese firm will manufacture and supply Li-ion cells for Tesla’s...

I've been trying to find out more info on what this tweak implies but no luck yet. Although I did get excited to see the word 'tweak' used as it was also used in the last Zen NR...LOL