Generac GP6500 COsense Portable Generator Review: General Information About Generac GP6500 COsense Portable Generator Review
The generator comes with two different types of batteries. One type is rechargeable lithium ion battery and the other one is non-rechargeable alkaline battery. Lithium ion batteries are used in portable electronic devices such as cell phones, MP3 players, cameras, etc..
They have a higher energy density than regular AA or AAA batteries. However, they are not rechargeable and need to be recharged regularly. A typical use time for a lithium ion battery is between 3-6 months. An example of a non-rechargeable alkaline battery is NiMH batteries which are commonly found in digital cameras, flashlights, calculators etc.. These batteries have much lower energy densities but can be charged up and discharged without any problem. For example, a typical use time for a NiMH battery is around 1-2 years.
As far as charging, the generator uses standard wall outlet power. You do not need to purchase special adapter cables or anything like that. There are some cases where it may be necessary to charge the batteries using an external charger, however there is no guarantee that your device will work properly when connected to such chargers.
The capacity of the battery is usually measured in milliamp hours (mAh). For example, let’s take a common 9V Alkaline battery. Its capacity is 700mAh, which means that if you were to test it with a constant load of 700mA, it will slowly drain and become useless after 1 hour.
For a generator that has a capacity of 5,000mAh, it can supply a maximum current of 5,000mA and will last for 2.5 hours. We can see from this example that the higher the capacity is, the less run time it takes before the battery dies. It should also be noted that the capacity is NOT equal to watt hours (Wh). For example, some devices may have a large capacity in mAh but low in Wh.
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