When fired point blank, plastic BBs can hurt as much as rubber bullets, however most people engaging in military simulations with airsoft guns wear thick military garb. Additionally, precautions are taken to protect the neck, face, and eyes. Many people chose to wear a balaclava around their face and neck and cobalt ontario ANSI approved eye protect is a must. The only place that plastic BBs can really cause damage is to your eyes.
Deterioration is a function of temperature and charge level. Don't make the mistake of storing the battery fully charged, as that is the state where it breaks the fastest due to heat. Charge it to take it out and put it like that on the back seat of your car avoid direct sunlight and preferably put the mini lithium facts notebook on a firm flat surface while operating it.
ONickel Cadmium (NiCd) - The oldest battery type used in cell phones. They are the heaviest and lowest capacity battery type. These can be somewhat hard to find.
The iPod warranty is one year but you can expand it for two years with AppleCare Protection Plan for iPod. Various merchants have inexpensive extended warranty coverage available and often these programs purely change the lithium bettery stock product with a corresponding new unit.
The incredible Fisher Karma can't miss from my list. This car includes a gas engine used to recharge the battery as well as an electric motor for that powertrain. The Karma was created by Henrik Fisher and boasts a 300 mile range. It may turn from zero to 60 mph in less than 6 seconds and may reach a maximum speed of 125 mph. The very first 50 miles are impelled by using a fully-charged battery and after that the gasoline engine turns on a generator which charges the lithium-ion battery. Interested? Then you should know that its cost goes up to $110,000.
The bottom line, be gentle to your lithium-ion batteries. If you excessively charge the battery, with high voltages, and heavy load conditions, it will shorten your battery's life. It's best to charge at a slower rate.