Battery depletes over night after fully charged with no use
I charged my I-Pod on my computer over night because battery was depleted. I woke up the next morning and the battery was completely depleted after no use all night. I got a blank screen with a black apple icon and a screen that red very low battery please connect to power source. My I-Pod and battery was just replaced about a week ago.
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Your battery may no longer be able to hold a charge. Head to an auto parts provider or a shop and they will test your battery for you.
The other problem you may have is something known as 'parasitic draw'. Even though it appears everything in your vehicle is turned off, you may have a wiring or electronics failure that will lead to a small power draw on your battery that will continue to deplete it overnight. This repeated depletion can wear your battery out permanently.
Both conditions if left undiagnosed and unrepaired will place extra draw on your alternator and in turn a drop in fuel economy. I recommend booking it in with a trusted auto service technician.
li-Ion batteries have a bad habit: whenever fully depleted, they lose a few cells, to the extent that they might not be able to hold a full charge if enough cells are damaged. In other words, repeatedly using a laptop (or any other Li-Ion powered device) to battery depletion can shorten the battery's life significantly. You might want to keep the batteries fully charged whenever possible and avoid fully depleting them too often. There is also the habit of "re-setting" the batteries by using the "fully deplete-fully charge" procedure. It only applies to niMH or NiCD batteries ( and is used to erase the "memory effect" ) but is damaging to Li-Ion batteries for the reason mentioned above. so if your battery can not full charge,this mean you need change a new battery for your laptop http://www.aulaptopbattery.com.au
moleman If the batteries are fully depleted then the on-board charger will not pick them up and charge them to full strength. It is not designed to charge very low batteries. If the batteries stayed fully depleted for a period of time you will have to replace both of them. You should never fully discharge your batteries. The battery level gauge on your chair should be used to determine when to charge if it is the red recharge overnite. Get into the habit of recharging overnite if you use the chair daily. Always store the chair fully charged and if not used weekly charge once a week. Never leave the charged plugged in more than 18 hours. The chair only operates on about a 5-6 volt range from about 21-26 volts. If you are in the red the voltage is down to about 20-21 volts. Hope this helps you
The rapid rate charger WPLN41__ will typically charge a battery in 90-120 minutes. Your battery should be depleted or nearly depleted when you place it in the charging stand. Be certain your radio is always turned off, when charging an attached battery. The NiMH battery will generally go 12-16 hours on a charge when new. If you work an eight hour shift, you might see if the radio will go 2 days on a charge. Later as the battery ages, you will need to charge it nightly. (Think of putting it in the charger as putting it to bed at night.)
Rapid charging is necessary on NiMH and Li-Ion batteries. They require a "hotter" charger, a fast rate, to completely charge the battery. It will not harm this chemistry of battery. It is safe to leave the battery on the charger overnight, or for a weekend. We would not recommend leaving the battery on the charger longer periods of time, as that will age the battery and reduce its life.
(Sidenote: Frequent rapid charging will however reduce the life of a NiCD battery.)