BY THE RS NUMBE

Car (South Africa) - - TECH -

NOT ALL BAT­TER­IES ARE CRE­ATED EQUAL

An EV’S range is linked to the en­ergy den­sity of its bat­ter­ies. As the tech evolves, so too does the den­sity. The fol­low­ing are ex­am­ples of the cur­rent spe­cific en­ergy den­sity (Wh/kg) of dif­fer­ent pro­duc­tion bat­tery types.

NICKEL-IRON

19-25 (Wh/kg)

NICKEL-CADMIUM

30 (Wh/kg)

LEAD-ACID

30-40 (Wh/kg)

ZINC-CAR­BON

36 (Wh/kg)

AL­KA­LINE

85-190 (Wh/kg)

LITHIUM-PHOS­PHATE

90-130 (Wh/kg)

LITHIUM-MAN­GANESE-OX­IDE

150 (Wh/kg)

LITHIUM-MAN­GANESE-DIOX­IDE

150-330 (Wh/kg)

LITHIUM-COBALT

220 (Wh/kg)

LITHIUM-IRON-DISULFIDE

297 (Wh/kg)

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