Radio Battery FAQ
How long will my battery keep my radio working?
A typical Kenwood Li-ion battery pack should provide somewhere between eight and ten hours of normal usage. Your mileage may vary depending on how much you transmit, the temperature of the battery, and its general condition.
Should I let my battery run all the way down before I charge it?
It is fine if you do, and it is fine if you don’t. With the Li-Ion packs found on most of the Kenwood radios, “memory effect” should not be an issue.
If you are using an older NiCad battery pack, letting it run down is the preferred way to do it. If you continually recharge a NiCad pack that is not completely discharged, you will notice a decrease in usable time. This is due to a phenomena called "memory effect".
What is memory effect?
For example, if a NiCad battery is repeatedly discharged to only 40% of its capacity during normal use is then charged, the battery eventually will only accept a charge to 40% of its capacity! If a battery normally gets ten hours of usage, it would mean that this battery would only supply about four hours of usage after a full charge!
Can memory effect be eliminated?
Maybe. Many packs can be reconditioned, to restore full capacity. Bring your battery to 1-600 CC for testing and reconditioning. If the pack can be brought back to 80% capacity, it is considered a serviceable battery, and will be returned to you. Less than 80%, and it is removed from service.
Does temperature have any effect on the battery?
It sure does. Batteries used in cold conditions can have their capacity reduced by up to 50%. Extreme heat can reduce normal usage time by 10% or more.
What is the normal life span of a battery pack?
A radio battery pack should provide 1 - 2 years of service. A battery that is stored normally has a 2 year shelf life. A new or stored battery must be charged prior to use.