Charger Question

[ruff]

ok, quick question here.... ive got my current 3.7v 1800mah box set up so i can charge "in mod" using a barrel adapter female from an old cable modem and the cord that came with said modem cut off and fitted in an old 510 auto battery casing with said 510 battery connector. and charges via 510 usb 4.2v .2a charger.

now on to the question part, if i had another charger that put out 4.2v 1.5a and i converted it to connect to same mod would that hurt the 2x 14500 900mah ultrafire protected batteries i have in the mod ? or would it work fine but charge faster?

 

[asdaq]

Your charger's amperage should not surpass your batteries capacity, as it will greatly shorten their life. Since the charger or mod you mention isn't balanced, you don't have any control of this. When the first cell would be done, the second would get the full 1.5A.

Better to get an ego style charger for this, or something else.

 

[Shadow102]

I totally second asdaq's advice on the Ego chargers. Combine them with a 500mA wall USB adapter and they make an easy charger for single cell or parallel mods, for about $9.

Simple enough for my 65 year old mom to use, and she doesn't have to open the case and mess with swappin batteries on a charger.

 

[AzPlumber]

I use this set up with an Ego charger for in box charging

 

[Str8V8ping]

I wouldnt charge cells in series .Not sure if your mod is parallel or series 14500's

 

[ruff]

Yeah theyre in paralell, and I made something like that ego charger with an old 510 battery and am using my 510 usb charger to power that, I was thinking that the 4.2v 1.5a charger would charge them faster than the 4.2v .2a 510 charger if I was to put an atty side 510 connector on the 1.5a charger and use said 510 to barrel jack to connect it to my mod

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[AzPlumber]

The Ego chargers are 500mA and would charge your batteries three times quicker vs the regular 510 charger at 150mA

 

[asdaq]

420mAh output at 5 volts. But much faster than 150.

 

[ruff]

Cool, so to get faster charge time its better to go ego charger then.

So in theory if I could find a 4.2v 800 mah charger my batteries should be safe ?

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[AzPlumber]

asdaq is correct, the output on an Ego charger is rated at 420 mA. Sometimes my memory is a little off.

 

[Shadow102]

Cool, so to get faster charge time its better to go ego charger then.

So in theory if I could find a 4.2v 800 mah charger my batteries should be safe ?

I've yet to come across a 4.2v charger that was higher than 650mA, and even then that was the Pila charger, but that won't be on-board.

 

[ruff]

I don't mind the other chargers, I can mod the charger to work with my existing onboard setup

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[asdaq]

A few days ago in raidy's thread he showed a mod for charging similar to your setup, using a UF charger and a dummy batt that had leads and a jack for plugging into the mod. That would be simple and safe and could be quicker than 420 too.

 

[ruff]

I remember seeing a few threads by him, it may be the one I borrowed the in mod charge idea, whats a uf charger?

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[asdaq]

Ultrafire, I'm not exactly sure what current it outputs. This pic says it all though:

 

[AzPlumber]

Just make sure you put the dummy battery in correctly

 

[ruff]

Lol yeah I was thinking that too

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[AzPlumber]

Ultrafire, I'm not exactly sure what current it outputs. This pic says it all though:

asdaq, is this your mod or the one from raidy that you posted about? It looks like a flask that I picked up a while back, just haven't decided what to do with it yet.

 

[asdaq]

No no, this mod is raidy's. Pretty much all of mine are brass and only a few of his are

 

[AzPlumber]

Ok thanks asdaq, would like to know about it so I will have to ask raidy