However, after his surprise, he was filled with pride and self-esteem.
Now, looking at Jiang Mianmian explaining the lithium battery, he had an immense sense of pride as if his own little sister had grown up and achieved something great.
After all, improving the capacity of nickel-hydrogen batteries and manufacturing lithium batteries, which were only available abroad, were two different concepts, not to mention rechargeable lithium batteries.
"Yes, I've been working on lithium batteries this time. Hydrogen batteries have a short lifespan and are heavy, making them inconvenient to carry. Although lithium batteries are a bit more expensive than nickel-hydrogen ones, they have a longer cycle life, so overall, they are still very cost-effective," Jiang Mianmian elaborated on her initial thoughts when creating the lithium battery.
