To be technical they have moved from nickel cadmium (NiCad), through nickel-metal hydride (NiMH) to lithium-ion (Li-ion).

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The battery cells were fabricated by adapting a process developed by another team at the university which is designed to make it faster to recharge the batteries than lithium ion (Li-on) and nickel metal hydride (NiMH) equivalents.

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With all the electronic devices in our lives these days, it makes environmental (and financial) sense to switch to rechargeable nickel metal hydride (NiMH) and lithium ion (Li-Ion) batteries.

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