Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

mobile phone battery question

Status
Not open for further replies.

ulot

New Member
Hi i want to ask
I was told by a gsm engineer that if your battery is not working properly, you can 'boast charge' the battery or reconditioning it.
Please can you explain further before i say what he told me cos' someone else gave me a contradicting view
 
Lithiums degrade severly every reconditioning period.

About 20% of the capacity is lost after a Lithium is reconditioned the first time, and the equipment needed to do this professionally cost some cash.
 
Hello
someone actually told me that before
but i want to ask how do you go about reconditioning and 'engineers' here usually use a simple voltage regulator to (as they call it) 'boost' the battery using a much higher voltage than it usually allows but someone else says that you should actually use a very low voltage and a high current to do that. that's where my question is.
 
From what I have seen so far, "re-conditioning", as it applies
to Li-Ion, is pulse-charging, and for NiCads, discharging to a
safe level and recharging at a controlled rate. Pulse charging
allows a much higher charging current (and rate) than the
allowable (usually C/10) "standard" charging rates. The
charge profiles are unique to the battery chemistry and
construction, and the it is usually wise to follow the
manufacturer's recommendations. Some consider pulse-
charging to be "re-conditioning" on any battery type.
I have done considerable testing on lead-acid batteries
with pulse spikes (as opposed to pulse charging) with
some success in desulfation; I intend to see if similar
results are obtained in other chemistries.
see the battery recovery section on:
www.txucom.net/~andysm

<als>
 
Hello
thanks for the extra knowledge
but tell me what you think of this atempt to 're-condition' a Li-ion battery:

the battery is not working and not charging, so the engineer (so to speak) takes the two wires of a voltage regulator, sets it to about 12 voltes, ties the each wire to a probe of a multimeter so he can tell which is +ve and which -ve while 'boost charging' as he calls it.
so the readings on the voltmeter keeps rising until it gets to the desired value after just a few seconds.
he puts the battery back into the phone then charge normally.
is this process ideal for 're-conditioning' a Li-ion battery?
 
I think the "so-to-speak" engineer is in for a big problem:
1) He connects the Li-Ion battery to the 12V regulator.
2) The phone rings, someone's at the door or he takes a pee.
3) He gets back to the battery to find his house on fire!
Lithium burns something like magnesium! Hot stuff.

A Li-Ion battery that is over-discharged is supposed to be charged at a very low current.
Read the warnings on the web from any battery manufacturer.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top