On treating your laptop, iPod, and iPhone batteries right:
Although progress in battery capacity is snail-like compared to the progress in energy consumption of the devices powered by batteries, rechargeable batteries have come a long way the past decade or two. All current Apple laptops, iPods, and the iPhone use lithium ion or lithium polymer rechargeable batteries. Apart from spontaneous combustion (which is rare), the main problem with rechargeable batteries is that they lose their capacity over time. This is especially worrisome with devices like the iPod and the iPhone where the battery isn't easily replaceable. So what can we do to keep our lithium batteries in good health until old age?