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Today's rechargeable batteries (in all of the standard consumer sizes) are very reliable and are actually recommended by most experts over disposables. All things considered, "Hybrid" and "Lithium" rechargeable batteries are the best performers overall.
The best kind of rechargeable batteries are the hybrid Eneloop batteries because they come fully charged and they have an extensive life. They can hold a charge 6 months and sometimes even longer and are worth the cost in the long run.
Ni-cad batteries first became popular as portable rechargeable batteries. The "regular batteries" used in cars are mostly lead-acid rechargeable batteries. The "regular batteries" used in toys, remote controls, flashlights and such, are mostly the non-rechargeable types. Ni-cad batteries use nickel and cadmium. The latter is a toxic substance, difficult to dispose of, and ni-cad batteries have a nasty tendency to lose capacity (the "memory" effect). For that and other reasons, makers of lightweight rechargeable batteries have switched to using nickel-metal-hydride or lithium batteries. (Lithium-metal = explosive, lithium-ion = very popular, lithium-polymer = extremely lightweight, lithium-iron-phosphate = next generation for hybrid and electric cars.) The Prius Hybrid uses nickel-metal-hydride battery cells. When weight or size is not as much of a concern, lead-acid batteries are used due to their lower cost. Most automobiles and many industrial uninterruptable power supplies use lead-acid batteries, which are capable of providing several hundred amperes of current for a short time. Ni-cad batteries are rechargeable, regular are not rechargeable.
Hybrid cars can not be plugged in so the only cost you encounter when trying to charge the batteries of a hybrid car is the cost of gasoline. All of today's modern cars charge their batteries though the use of regenerative braking systems which use the friction of the brakes to generate electricity and a small gasoline engine.
Batteries are rechargeable when you drive, so when you use batteries in a car it eases up on the gas consumption! The savings are very small overall due to the large initial cost. Many economists believe they are not cost effective.
Today, the best rechargeable batteries are the new hybrid Nickel-Metal Hydride (Ni-MH) cells. These hybrid batteries have a lot going for them: they come fully charged (like alkaline batteries), and they can hold their charge over may months (unlike regular Ni-MH rechargeables). Because they can hold their charge for so long, they are suitable for low-drain devices like remote controls and flashlights. But they are also ideal for use in high-drain electronic devices like digital cameras.
Just had the batteries on my 2003 Civic Hybrid replaced. (April 12, 2008) 68,500 miles. The cost of the batteries and installation on the warranty worksheet was $4,100. The only indication that the batteries had gone bad was the IMA light came on and stayed on. I purchased the car in Sept of 2002. 5 1/2 years doesn't seem good when they said they would last for 10 years.
trudge, walk heavily.Filling in a hole.
There is no need to plug in a hybrid vehicle. The hybrid engine will recharge the batteries as needed by using the gas engine. Some newer hybrid cars even use breaking to recharge the batteries.
Lithium ion
A Hybrid car uses both electric motors and a gasoline engine. Some Hybrids use a very small gasoline engine to assist in charging the batteries that drive the electric motors. These cars often use breaking to charge the batteries as well
Yes, Hybrid cars have both electric and combustion engines. In most cars the Combustion engine kicks in to charge the batteries to extend range before having to recharge and refuel.