Not fully charging.. always on 68% maximum full charge.

You may want to look for the manual but it is mostly caused by a bad battery. The battery may be discharged far and many chargers are not capable to charge batteries being even close to full. Green means charging and red is fail. It keeps trying. A broken and useless battery may show the same indicators flashing. Inspect the battery to make sure it is in a good condition, like acid at about the right level and no traces of melting on the container or visible loose/bent plates. Put a voltage or multimeter on 20 Volt at its terminals and determine the battery has any voltage to begin with. 11Volt indicates an empty battery and 12,8 to 13,2 is probably full. An empty 12 Volt battery is charged with a 12 Volt ~ 1 Amp power adapter (maximum 1/10 of battery Amp but not until fully charged) and preferably a 1 Amp fuse in the + line. This is "attended charging," meaning things must not get hot and charging is stopped before the battery is full. Then try the charger again, always the 12 Volt clamps attached first and next the plug in the mains. Disconnecting is in reverse order.
Bad batteries often have sulfur on their plates and can be revived by fast discharging but the success rate is low. Meaning a battery can be better but not good enough. Batteries have a life of 5 years and closer to 10 when always charged. When charging was low and often not, the battery could have died after two or three years. This apart from a limited number of charge-discharge cycles. The test is with all lights on and then not dimming in the first minute or after ten seconds. Good batteries must hold charge for a week and not much less every day.

I have always understood that it is 'best practice' to fully charge the batteries for electronic equipment. If they are continually only half charged, they can develop a 'memory' and no longer take a full charge.
The other criterion, of course, is that a fully-charged battery will last longer in use, and not let you down at a crucial point when filming.

Many users do not use their notebook/notebook batteries correctly. The battery in a laptop/notebook/netbook is a rechargeable battery, like the battery in a Cellphone, a Digital Camera an eReader or an MP3/MP4/MP5 Player. This type of battery needs to both charge and discharge, if it is to perform to its maximum capacity and have a full, long life.

You would never dream of using a Cellphone, Digital Camera, an eReader or an MP3/MP4/MP5 Player only with the devices permanently connected to the mains electricity, because they are all devices that are designed to be used while the user is moving around whether indoors or outdoors, powered by their rechargeable batteries. the batteries of such devices are only recharged when the charge in their cells is depleted and then only for as long as it takes to restore full charge to them.

As with the other devices mentioned, a laptop/notebook/netbook's battery is designed for mobile use and the user should charge it to 100% full and then stop charging it to then use the device on battery power alone, until the battery is low on power, when the recharging cycle can then be repeated.

A notebook/netbook has more flexibility than the other devices mentioned because, unlike the other devices, it can also be powered directly from the mains electricity, without the battery installed.

If your laptop/notebook/netbook is mainly used away from the home or office, it is fine to leave the battery permanently installed. If, however, it is mainly used indoors at home or at work and always or almost always on exactly the same desk or table, then it makes little sense to use it either on battery power alone or with the battery permanently installed.

Charge the battery up to full charge and then disconnect the battery from the device and keep it safely for when you next need to use the laptop/notebook/netbook on the move (if the battery is stored for long periods it may require additional recharging to both maintain the battery's condition and to keep it fully charged because low level power dissipation takes place in a disconnected battery). Then connect the device to the mains electricity without the battery and continue using it like that.

If the laptop/notebook/netbook is mainly used in a single permanent indoor location, then charging has to stop when the battery has reached 100% full charge and should only be resumed when the device gives a low battery charge warning.

It is also important not to let rechargeable batteries drain completely by ignoring the low battery charge warming and continuing to use the device until the battery runs out of charge and the device powers down suddenly. Sudden shutdowns like this are neither good for the battery nor the device and can shorten the lifespan of both.

Continuing to charge any rechargeable battery when it has already been fully charged damages and shortens the life of the battery. It can even damage the internal Power Management System of the device if done over a sustained period of time and/or for prolonged periods of time.

When your notebook only shows 75% as the maximum charging level, this is an indication that one or more (probably two) of the individual cells that make up the battery are fully depleted, damaged and probably no longer capable of storing a charge, for the reasons given above. You should stop charging this battery after it has reached 75%, otherwise more cells are likely to become damaged and so on until the entire battery is dead, unresponsive and useless.

As rechargeable batteries age they build up what is called a 'memory' or a 'charge memory'....

Let me explain how this works...you have a new battery and you run your laptop normally until it hits 15% charge then you charge it up and use it again until about 15% then charge it again....with the charge only dropping to 15% the battery builds up a 'memory' of that over a period of time (usually over at least a year up to a couple years) and then your battery's maximum capacity is no longer 100%. Same thing happens if you dont charge it fully each time, after a while it becomes incapable of taking a full charge.

What you can do to stop that in the future....when you get a new battery every now and then run its charge down to 1% then charge it to maximum. By doing that on a regular basis you help make sure the battery remembers its full charge capacity.

some devices doesn't have indicator that it is already fully charged so my advise is since almost all rechargeable gadgets needs to be charged 4-8 hours depending on the power needed by the device for example a cellphone that uses 37 volts li-ion battery should be charged 3-4 hours to use it in its maximum capacity. so look how much power needed by the device and charge it at least 4 hours for the battery to be full.

I just got my Ozone a few days ago. What you should always do with an electronic device is charge it fully before turning it on. Then using it until it dies completely with no battery. Then fully charge it again for maximum battery life.

You can go to Start, Settings, More, Power, Power Management. Change the different things to make it save on power. Also a big help is Start, System tools, Task Manager and delete everything that is being used. That just turns it off in the background, it doesn't delete the program.

Your E2 is showing a battery that is just about dead. Luckily you can replace it

Generally most batterys are left on the charger overnight, thats a good way to ensure a full charge, but as you will be using it in your car, it doesn't matter much as power is always available.

To ensure best possible battery life when you have a brand new battery, charge it fully and then drain it almost to 0% Draining most batterys into 0% will be harmfull instead of helpful, I assume the nuvi uses a Li-ion battery so draining it fully is not a good idea, drain it almost fully and then charge it fully.

And you are good to go, repeat the process if you leave the unit unused for a month or two for best battery life.

Thank you,
IwillFixIT!!

in this phone when the battery is fully charged the running battery indicators stop at full position. U must charge every phones battery a maximum of 2 hours b'coz charging more than it reduces battery life and if the battery is not fully charged in 2 hours u must charge it after 20 minutes again

take out the battery, let set for a few min. and put it back in, try it. If does not work you need a new battery