soldering AAA batteries

[muckington]

I see a lot of YT vides where they do this to replace the batteries inside of mobile phones that are no longer made
Will the heat of the soldering iron not destroy the battery?

 

[robinbanks]

Are you sure you’re not thinking of soldering tabs welded onto batteries? You can buy batteries with tabs on already

..but if you’re having to go to such lengths because the battery is no longer made, what good is the phone likely to be, really?

 

[jj4091]

You would normally use a spot welder not a soldering iron as the heat is applied quickly with a welder and as you say an iron can damage the batteries.

 

[Munroast]

I have soldered wires onto 1.5v AA batteries before and It has not harmed them, do it quickly though and prepare the surface well before soldering, a quick 1 second dab of solder will do no harm, if you are hopeless at soldering and will be arsing about for 10 minutes, then all that heat might damage the battery

I thought phones had lithium type batteries on them ? "NEVER INTERFERE WITH ONE OF THOSE BATTERIES"

 

[robinbanks]

I thought phones had lithium type batteries on them ? "NEVER INTERFERE WITH ONE OF THOSE BATTERIES"

I understand your unnecessarily shouty point but lithium batteries like 18650s are frequently sold with tabs on for soldering/messing with..

 

[Munroast]

I understand your unnecessarily shouty point but lithium batteries like 18650s are frequently sold with tabs on for soldering/messing with..

if you are buying batteries designed for such thhings then fair enough - the important point is - don't mess about with lithium type btteries inside devices unless you fully understand what you are doing, these things can be very dangerous

 

[Harry Bloomfield]

Will the heat of the soldering iron not destroy the battery?

That, depends. I have done it several times, repairing various battery packs, but care is needed. A good hot iron is needed, with good thermal capacity. The battery terminals need to be clean, and in many cases, the soldering will need a more aggressive flux. Plumbers flux, works well, but must be cleaned off after soldering.

 

[SUNRAY]

That, depends. I have done it several times, repairing various battery packs, but care is needed. A good hot iron is needed, with good thermal capacity. The battery terminals need to be clean, and in many cases, the soldering will need a more aggressive flux. Plumbers flux, works well, but must be cleaned off after soldering.

Particularly if the batteries have stainless steel ends when a special flux is required.

 

[plugwash]

It seems you can pick up a basic spot welder designed for this purpose for about £60.

 

[Harry Bloomfield]

It seems you can pick up a basic spot welder designed for this purpose for about £60.

Or, numerous online designs, to make your own, using a car starter solenoid/relay.

 

[muckington]

Are you sure you’re not thinking of soldering tabs welded onto batteries? You can buy batteries with tabs on already

I dont know; but the battery box holds 4X AAA batteries, can these types of batteries be bough with tabs all ready on

..but if you’re having to go to such lengths because the battery is no longer made, what good is the phone likely to be, really?

there is nothing wrong with these phones they work just fine

 

[muckington]

You would normally use a spot welder not a soldering iron as the heat is applied quickly with a welder and as you say an iron can damage the batteries.

do you mean a mig welder?

 

[muckington]

I have soldered wires onto 1.5v AA batteries before and It has not harmed them, do it quickly though and prepare the surface well before soldering, a quick 1 second dab of solder will do no harm, if you are hopeless at soldering and will be arsing about for 10 minutes, then all that heat might damage the battery

I have a low powered iron and I dont do a lot of it

I thought phones had lithium type batteries on them ? "NEVER INTERFERE WITH ONE OF THOSE BATTERIES"

Its an Errison, they are all AAA inside I think

 

[Harry Bloomfield]

do you mean a mig welder?

No! The usual thing used, is a 12v battery, thick wires, a car starter solenoid, triggered by a push-button. The thick wires, feeding a pair of pointed electrodes. Some limited the 'on time', using a timer. Here is one DIY version. https://www.instructables.com/Simple-Battery-Spot-Welder/

I have a low powered iron and I dont do a lot of it

To solder, the soldering needs to be done quickly, which means an iron with some mass.

 

[muckington]

No! The usual thing used, is a 12v battery, thick wires, a car starter solenoid, triggered by a push-button. The thick wires, feeding a pair of pointed electrodes. Some limited the 'on time', using a timer. Here is one DIY version. https://www.instructables.com/Simple-Battery-Spot-Welder/



To solder, the soldering needs to be done quickly, which means an iron with some mass.

I guess it would be better to find someone that could do it for me for a small fee, other then that find some AAA batteries for sale that all ready have the soldering tabs welded to the batteries as mentioned in post 2