I have been having problems charging my phone for a few days. I suspect the socket in the phone. 2 different charges wont charge it. I had to buy a new phone today as it gave up but assuming it isn't the battery how can I charge the battery so I can get the data off of the phone?
Kevin
Borrow a battery from someone with the same phone?
Depends on the phone, but some have separate charger and USB sockets. You can try charging it from USB if the charger socket doesn't work. If that helps, buy a USB charger.
Theo
Some of the data is on the SIM card, but I guess you already know that.
Take it to your local mobile repair shop and get them to pull the data to a stick for you.
In article , Zen83237 writes
Phone make? Battery type?
Sony Ericssons are notorious for the base contacts clagging up. Clean with a new toothbrush[1] and neat alcohol (IPA).
[1] Glass fibre brush better but not everybody has one.
And how are they going to charge the battery?
MBQ
Maybe it needs a new battery; they are pretty cheap on eBay or Amazon now. I'd give the battery contacts a spray with Contact Cleaner, costs 2 or 3 pounds at Maplins.
One option:
Remove batter and look at the marked voltage. Set bench PSU to same Connect PSU to battery terminals on phone...
That's the DIY solution :-)
MBQ
Bench PSU? Whats wrong with two flyleads from the phone charger?
What are the odds of a decent repair shop *not* having a phone around that uses the same battery type?
The phone charger input is likely at a different voltage to the natural cell voltage of the battery (eg 5V from USB v 3.6V from lithium ion). The battery charge circuit might not like that.
As it is, you might still have difficulty: the battery smarts won't be there. Depends whether the phone will power up if it has a voltage but can't read status from the battery.
Theo
Ta.
Know anyone with soldering skills? If it were me I'd dismantle the phone, remove the broken socket, and solder some trailing wires on instead which I could connect to the charger - it all only needs to run for long enough to charge and get the data off, so it doesn't really need to go back together again afterwards.
That's assuming that it is the socket in the first place, and not some other fault.
cheers
Jules
Know anyone with soldering skills? If it were me I'd dismantle the phone, remove the broken socket, and solder some trailing wires on instead which I could connect to the charger - it all only needs to run for long enough to charge and get the data off, so it doesn't really need to go back together again afterwards.
That's assuming that it is the socket in the first place, and not some other fault.
cheers
Jules
I have successfully charged Lithium Ion phone batteries from a bench power supply at 4.2V with the current limit set to < 1/10th of the battery capacity (e.g. < 100mA for a 1Ah battery)
Lithium ion batteries can burst into flames in a very spectacular way if abused so be careful (the battery pack will have protection electronics to protect it from overcharge so it's unlikely to explode but it can happen).
Alternatively, if you just want to get data off you could connect a suitable power supply directly to the battery contacts on the phone. For a lithium ion battery anything between 3.3 and 4.2V should work.
Phone batteries are not *usually* that smart - they usually have a simple analogue circuit which will disconnect the battery to prevent overcharge or overcurrent. The third terminal is usually a thermistor connected to the negative terminal which the charging circuit in the phone uses to monitor battery temperature.
I have successfully charged phone batteries from a bench PSU.
Yup, BTDTGTTS. The nice posh farnell ones with current limiter are good for this - just set that to 100mA or similar and hook it up - no need to be too fussy with the voltage that way.
I would recommend setting the voltage carefully for a lithium ion battery as they can fail spectacularly, see the explosion 2 minutes into this video:
Any commercial battery will probably have a protection module to prevent over voltage so you would almost certainly get away it if you did set the voltage a bit too high but all the datasheets I have seen recommend that you don't rely on the protection module for for charge termination.
Gareth
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