PDA
Battery Degradation
and Power Loss
Executive Summary about PDA Battery By Dan Hagopian
Extending your PDA Battery Life so that you get the most cost effective use of your PDA battery begins with always keeping a spare pda battery replacement. PDA batteries are cheap enough that owning a backup pda battery makes absolute sense.
Beyond a spare pda battery replacement you can use some basic battery conditioning techniques to help further extend the life of your pda battery like: use the AC adapter or pda cradle at a desk, powering your pda battery down when not in use, dimming your pda screen down, and using peripherals wisely.
But with PDA batteries there is far more going on internally that work against the life of a pda battery.
Declining Capacity
PDA batteries are specified to deliver about 100 percent capacity when new but after usage and aging and lack of conditioning a pda battery’s capacity will drop.
If you are using a pda battery (or any lithium-ion or lithium-polymer battery) when your battery’s capacity reaches 60% to 70% the pda battery will need to be replaced. Standard industry practice will warranty a battery above 80%. The loss of charge acceptance of the Li‑ion/polymer batteries is due to cell oxidation. Cell oxidation is when the cells of the battery lose their electrons. This is a normal process of the battery charge creation process. In fact every time you use your pda battery a loss of charge acceptance occurs (the charge loss allows your battery to power your pda). Capacity loss is permanent.
Internal Resistance
Internal resistance, known as impedance, determines the performance and runtime of a battery. A high internal resistance curtails the flow of energy from the battery to a pda device. The internal resistance of the Li‑ion batteries cannot be improved with cycling (recharging).
Elevated Self-Discharge
All batteries have an inherent self-discharge. Li‑ion battery’s self-discharges about five percent in the first 24 hours and one to two percent thereafter. At higher temperatures, the self-discharge on all battery chemistries increases. The self-discharge of a battery increases with age and usage.
Premature Voltage Cut-Off
Some pdas do not fully utilize the low-end voltage spectrum of a pda battery. The pda device itself cuts off before the designated end-of-discharge voltage is reached and battery power remains unused. High cut-off voltage is mostly equipment related, not battery.
Planning to Buy a Pda Battery?
Executive Summary about PDA Battery By kevinmos moshayedi
When battery levels are low, the PDA is more of a liability. If you own a PDA, you obviously need PDA battery without which the PDA is purposeless. In many cases you will want to either get a second battery as a standby battery or you want to replace the existing battery with a more efficient one. With today’s competitive PDA battery prices, it is not difficult to buy a new or additional battery.
Now there is more than one type of battery for handheld devices. Nickel Cadmium (NiCd) PDA batteries have been in the market for a very long time. NiCd is of proven quality and most widely used rechargeable batteries. There are Nickel-Metal Hydride (NiMh) pocket PC batteries. No distinct advantage can be cited for using this type of battery. The latest technology for handheld batteries is Lithium Ion (Li Ion) PDA batteries. Li Ion batteries are a relatively new technology and it is believed that they can deliver 40% more capacity than the NiCd battery, and are much lighter in weight. They do not have memory - the tendency of NiCD batteries to lose capacity over time and recharges.
It is now widely accepted that LiIon is perfect for PDA battery, notebook computers, cordless phone battery and other handheld devices such as cellular phone battery,Flashligh Battery and Laptop Battery. The most recommended source for getting a PDA battery is to buy them online.
