Battery problem!

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hi,when I main battery run out,the XDA lls switch off.
And can not turn on even the Backup battery is 100% full?

so what's the backup battery for?
any different from both of them?

:idea:

Batts

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Hi

The 'backup battery' is a very low capacity NiMh batt that is designed to power the RAM memory in the device for max 10 mins. This allows you to exchange the main battery for a spare (charged) battery, or change your sim card without loosing the contents of the memory.

The 'backup battery' will *not* power the unit, If your main battery gets to 0% your device will switch off. The 'backup battery' will then maintain the devices memory for a quoted 10 mins (if it was fully charged). If the backup battery becomes exhausted the device will loose the contents of its RAM (where the OS and some of your programs are stored). Essentially, if this happens then the unit will power up as if you had just performed a hard reset (shipping state).

I have found that the unit can survive a few hours in an off state once the main battery reaches 0%.

The backup battery charges automatically from the main battery.

The Blue Angel also includes flash memory (about ~44MB) internally, you can see this via the file explorer. Since this is non volatile flash memory, its contents will survive when the main memory does not. I tend to use the backup tool to backup my progs to this flash mem in case I forget to charge the unit. I then keep all my files on a 1GB SD card.

Nigel

Very good explain;
GOOD ONE! Nigel
:lol:

Just a few more:

''If the backup battery becomes exhausted the device will loose the contents of its RAM (where the OS and some of your programs are stored). ''

Is that mean I can not use it any longer once the device lose the Contents of Ram?

What I should do if this happened?



And finally,what brand sd card you will advise?

:wink:
thx a lot

If all your batteries run out then the machine will be returned to the state that it was in when you bought it. Next time you switch it on, the operating system will be copied from hidden flash memory to RAM.

You will loose any programs that you, yourself installed, and any data that was stored in RAM (for instance your contacts database).

Unless you kept a backup, then there is no way to restore this data. You can backup the units contacts database very quickly using Settings-->System-->Permanent Save. If you set this up then it will save your data away in flash memory. It will only save the data types listed (in the dialogue), it will not save away any software that you installed or any data that you created with that software.

To ensure that you dont loose any data, I recommend periodically backing the unit up, either to your PC using activesync, or to either the internal flash or an SD flash card. I have software on mine called xBackup, your's may have the same software. You can use xbackup to perform full system backups.

If you have a backup from xbackup (or similar) then you can use this to restore your systems state after a hard reset (or power failure).

Nigel

Super,you are cool man!

I think I won't have any problem with this in th further.

THANKS :lol:

One further piece of advice re backups- I'd consider having a smallish SD Card just for backing up, which you can them store safely elsewhere, or have a policy of copying the contents of your SD card to another location (PC?) regularly.

This is in case you have your device stolen, or you lose it, so you'd then lose all your valuable data and contacts etc.