Question

List types of rechargeable batteries that you have encountered and the types of device that they are used in.

Accepted Answer

The most common rechargeable batteries are lead acid, $NiCd, NiMH$ and $Li$ -ion.

Lead acid - This is the oldest rechargeable battery system. Lead acid is rugged, forgiving if abused and is economically priced, but it has a low specific energy and limited cycle count. Lead acid is used for wheelchairs, golf cars, personnel carriers, emergency lighting and uninterruptible power supply (UPS). Lead is toxic and cannot be disposed in landfills.

Nickel-cadmium – Mature and well understood, $NiCd$ is used where long service life, high discharge current and extreme temperatures are required. $NiCd$ is one of the most rugged and enduring batteries; it is the only chemistry that allows ultra-fast charging with minimal stress. Main applications are power tools, medical devices, aviation and UPS. Due to environmental concerns, $NiCd$ is being replaced with other chemistries, but it retains its status in aircraft due to its good safety record.

Nickel-metal-hydride – Serves as a replacement for $NiCd$ as it has only mild toxic metals and provides higher specific energy. $NiMH$ is used for medical instruments, hybrid cars and industrial applications. $NiMH$ is also available in AA and AAA cells for consumer use.

Lithium-ion – $Li$ -ion is replacing many applications that were previously served by lead and nickel-based batteries. Due to safety concerns, $Li$ -ion needs a protection circuit. It is more expensive than most other batteries, but high cycle count and low maintenance reduce the cost per cycle over many other chemistries.

Gary Horner Solutions for Chapter: Movement, Exercise 4: Rechargeable battery

Gary Horner Chemistry Solutions for Exercise - Gary Horner Solutions for Chapter: Movement, Exercise 4: Rechargeable battery

Questions from Gary Horner Solutions for Chapter: Movement, Exercise 4: Rechargeable battery with Hints & Solutions

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