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Tier 1 HELLA evaluating PowerGenix NiZn batteries for 48V mild hybrid vehicles

Green Car Congress

NiZn offers superior energy and power density compared to lead-acid and Nickel-Metal Hydride (NiMH) and avoids the high costs and safety issues associated with Lithium-ion (Li-ion) batteries. Nickel-zinc batteries are chemically very similar to nickel-cadmium, NiCd. Marc Nalbach of HELLA. Source: PowerGenix.

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Electric bicycles classifications, history & development 

Electric Vehicles India

Nickel-cadmium battery(NiCd). Nickel-metal hydride battery (NiMH or Ni–MH). An output of the bevel gear wheel of a D.C. motor is engaged with the large bevel gear wheel to directly drive the hub in a forward direction. The hub may also be pedal driven so the function of the pedals is not changed. Lead-acid battery.