Why Batteries Function Better with Their Dedicated Chargers?

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killswitch
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jon_slider wrote:
killswitch wrote:
Can I just buy one … charger…
Yes

here is a charger that can do both LiIon and Eneloop
https://www.illumn.com/vapcell-s4-plus-3a-battery-analyzer-li-ion-nimh-n...

you do not have to tell it what charge rate to use (but you can), it is smart enough to charge safely, automatically.

Another question. Are there chargers that come with or without batteries that are as easy to use as plugging them into wall’s receptacle without requiring any knowledge but are almost as smart as universal charger to take care of batteries automatically? This one I would need for someone who just wants easy to use optimal charging that charges withing 4-5 hours without wearing out batteries. I assume that these wall chargers are only for NiMH and NiCads but are not for charging lithium-ions?

wle
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killswitch wrote:
wle wrote:
usually the ‘automatic’ ones are just slow

like 100ma default for a 2200 mah battery, would take all day

Are you referring to chargers that plug into wall’s receptacle directly? Those branded chargers for their respective batteries like Panasonic, Duracell and my Camelion? With 100mAh it would take 22 hours to charge 2200mAh battery?

usually the default currents are pretty low, for safety

2200mah / 100 ma would be 22 hours – at least

the “C” (capacity) is 2200mah, 100mah is 1/22C

BU-409: Charging Lithium-ion – Battery University
https://batteryuniversity.com › article › bu-409-chargin…

The advised charge rate of an Energy Cell is between 0.5C and 1C; the complete charge time is about 2–3 hours
that would be 1100 to 2200 mA

wle

"You never have the wind with you - it's either against you, or you're having a good day."
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jon_slider
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killswitch wrote:
I assume that these wall chargers are only for NiMH and NiCads but are not for charging lithium-ions?
your assumption is mistaken. The charger I linked you to will do all of those, automatically.

Try to let go of the idea that certain brands of batteries need certain brands of chargers. That is not correct. Chargers do not care what brand the battery is.

wle
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jon_slider wrote:
killswitch wrote:
I assume that these wall chargers are only for NiMH and NiCads but are not for charging lithium-ions?
your assumption is mistaken. The charger I linked you to will do all of those, automatically.

Try to let go of the idea that certain brands of batteries need certain brands of chargers. That is not correct. Chargers do not care what brand the battery is.

they can distinguish battery type, easily

what they cannot do is, figure out the capacity of a li-ion

and without knowing that, they can only guess the right charge rate

you are right, brand does not matter

what i was thinking more about was, internal chargers, where the [internal] charger knows what battery comes with the light
there, the charge rate can be matched to the cell

wle

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
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killswitch
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jon_slider wrote:
killswitch wrote:
I assume that these wall chargers are only for NiMH and NiCads but are not for charging lithium-ions?
your assumption is mistaken. The charger I linked you to will do all of those, automatically.

Try to let go of the idea that certain brands of batteries need certain brands of chargers. That is not correct. Chargers do not care what brand the battery is.

I refered to different chargers this time. Not universal chargers with separate power adapter. I refered to wall chargers without display that have retractable, (although not always) prongs that you plug in directly to receptacle.

I saw them usually sold with batteries of the same brand. Mine is Camelion but I wanted something close to universal smart charger without additional power adapter that charges more optimally causing less wearout for batteries. But these kind if chargers are made to charge Ni-MH and Ni-Cd batteries as far as I noticed.

killswitch
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Ricflair wrote:
I charge just about everything (You name the cell & chemistry) with Nitecore chargers. Been doing it for about a decade and never had an issue.

Which Nitecore do you use often? UM4 model seems like a good choice at the moment. I understand that after purchasing you need to verify authenticity through code obtained from manufacturer’s website in order to start using the charger?

It comes with USB cable and requires USB wall plug to connect to. I don’t know if I need to buy special USB wall plug for it that is offered as accessory. It states 5V 2A and 9V 2A 18W in its input. I happen to have the following 2:

- Input 0.15A
- Output slot #1 5V 2A
- Output slot #2 5V 1A

- Input 150mAh (same as 0.15A I guess)
- Output 5V 1A

As to 18W none of the 2 above mention it. Regarding 9V 2A it is probably for high density lithium ions or rectangular 9V rechargeable battery? Can it charge 18650 lithium ion with 5V 2A?

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wle wrote:
smaller ones may end up over-voltage if the charge is too fast

i have one tiny worn out 16340 that ends up at 4.7V on the lowest current i have, 300 ma

wle

Sounds like your charger is broken. All li-ion chargers in good working order should be using 4.2V as the charge voltage. In the CC stage the current is limited which will limit the voltage to the cell. Once the charge current is at or below the current limit then the cell will get the full 4.2V (CV stage) while the current slowly drops off as the cell slowly gets to 4.2V

No matter the battery condition/age, if the end cell voltage is at 4.3V or above then that charger should be retired and not used.

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killswitch wrote:
Can it charge 18650 lithium ion with 5V 2A?
probably, lets assume a 3000mAh 18650 battery

it is not very good for the battery to be fast charged at 2A in 1.5 hours
better to use the 1A slot, and charge in 3 hours

lower charge rates are needed for lower capacity batteries, for example 14500 battery with 1000mAh capacity should not be charged at 2A in 30 minutes. It will get hot, and that will degrade the life..

look for a charge rate that takes 4 hours.. that would mean a charge rate of 250mA.. would charge the 1000mAh 14500 battery in 4 hours.

neither slot on your 2 slot charger starts low enough for the 14500 battery… look up the name and model, and see what battery Sizes, it says it is capable of charging. My guess is it says 18650, and does not say 14500…

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nothing is really low enough for cheap 16340 cells though

real capacity can be like 500mah

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
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I use the Olight Universal Charger for my 16340, 14500, and AA and AAA Eneloop batteries, it can also charge 18650.

Have had nothing but good results with it. I especially like that I can do both Eneloop and LiIon with it.

I still observe the rule to only charge while I am present, in case a battery starts to heat up. Have not had that happen.

here is an example of a kit that uses the Universal Charger, with a light that can use both AA and 16340. I like that the charger is USB powered, and very small.

.

this charger does not have any selectable options, it is totally automatic.

wle
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check the 16340 volts after it is done

if it is over 4.2V, that is a big problem!!

wle

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
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jon_slider
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wle wrote:
check the 16340 volts after it is done

if it is over 4.2V, that is a big problem!!

wle


I do not see that problem with my charger. It actually terminates slightly below 4.2V, which is fine.. .

If your charger overcharges, I think it is a problem at your end.

I suggest you buy the one Im using. Innocent

wle
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jon_slider wrote:
wle wrote:
check the 16340 volts after it is done

if it is over 4.2V, that is a big problem!!

wle


I do not see that problem with my charger. It actually terminates slightly below 4.2V, which is fine.. .

If your charger overcharges, I think it is a problem at your end.

I suggest you buy the one Im using. Innocent

charger is fine, it;s the crappy old cheap worn out battery

wle

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
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jon_slider wrote:
wle wrote:
check the 16340 volts after it is done

if it is over 4.2V, that is a big problem!!

wle


I do not see that problem with my charger. It actually terminates slightly below 4.2V, which is fine.. .

If your charger overcharges, I think it is a problem at your end.

I suggest you buy the one Im using. Innocent

I had one of those Olight chargers but it stopped working after a year or so. I only used it about 5 times so it’s not as if it was over-worked. I’d buy another one if I was sure it would be more reliable then the one I had Silly
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SIGShooter wrote:
I had one of those Olight chargers but it stopped working after a year or so.
sorry yours died

mine has been fine for the last 4 years..

killswitch
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Hello. I looked into Panasonic CC17 charger review and noticed that author mentioned that CC17 has only 1 charging circuit, whereas CC16 has 2.

Quote:
The charger is very good at filling the batteries . No trickle charge is an advantage for LSD cells . Compared to the CC16 this one only has one charger circuit , the CC16 has two . With AA batteries the CC16 reduces the actual current , this one changes the duty cycle , but due to the lower current there is not much difference in the charge current in the pulses . I believe this is a good but slow NiMH charger.

What advantage having 2 charging circuits offers?

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