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Lidl's 'CTEK' chargers on sale from today

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Triton Thrasher
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PostPosted: 13:36 - 13 Jan 2018    Post subject: Reply with quote

How does <15 V from a running car charging system force too much current into a bike? I mean if you don't inadvertently reverse the jump leads' + & -.

At the end of the day, the Lidl charger is much cheaper than a car, though.
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KITT
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PostPosted: 13:42 - 13 Jan 2018    Post subject: Reply with quote

Triton Thrasher wrote:
How does <15 V from a running car charging system force too much current into a bike? I mean if you don't inadvertently reverse the jump leads' + & -.

Armchair Expert.

Someone who claims to know all the answers to a problem, situation or scenario but has little or no experience or real understanding of it. Usually found on internet forums or writing in the letters section of tabloid newspapers. When faced with educated people who disassemble their argument with facts, they often state they learned their experience at the "University of life".
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hellkat
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PostPosted: 14:12 - 13 Jan 2018    Post subject: Reply with quote

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Oh. well in that case ...

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Triton Thrasher
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PostPosted: 15:01 - 13 Jan 2018    Post subject: Reply with quote

Bodyguard wrote:
Armchair Expert.


Sorry!
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Triton Thrasher
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PostPosted: 15:08 - 13 Jan 2018    Post subject: Reply with quote

hellkat wrote:


Wait till I settle a bit further into this armchair.

It's Fast Lepton Ion Reduction Technology. The team who developed it have never even looked in the direction of a woman of childbearing age, let alone flirted!
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RhynoCZ
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PostPosted: 15:20 - 13 Jan 2018    Post subject: Reply with quote

Triton Thrasher wrote:
How does <15 V from a running car charging system force too much current into a bike? I mean if you don't inadvertently reverse the jump leads' + & -.

At the end of the day, the Lidl charger is much cheaper than a car, though.


V = Voltage
A = Amperage/Current

Voltage on motorcycles/cars = the same
Current on motorcycles/cars = waaaaaay different

At the end of the day, the British educational system is a joke.
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Triton Thrasher
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PostPosted: 15:33 - 13 Jan 2018    Post subject: Reply with quote

RhynoCZ wrote:


V = Voltage
A = Amperage/Current

Voltage on motorcycles/cars = the same
Current on motorcycles/cars = waaaaaay different


At my joke school, they called current I.

And I = V/R.

If V doesn't change, then I doesn't change.

We're not concerned with higher currents in car circuits.
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ThatDippyTwat
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PostPosted: 15:39 - 13 Jan 2018    Post subject: Reply with quote

RhynoCZ wrote:
At the end of the day, the British educational system is a joke.


This isn't backwoods Eastern Europe, we have dealers to do that shit for you. /s
Sweeping generalisations are stupid.

I can introduce you to a couple of Eastern European mates that would struggle to change a wheel on a car, let alone grasp the intricacies of a modern vehicles electrical system, but it doesn't mean they're a product of a shit school system.
Correlation ≠ causation.

Current is I, not A.
A is Amperes, the unit used to measure current.
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Nobby the Bastard
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PostPosted: 15:41 - 13 Jan 2018    Post subject: Reply with quote

A charger plugged into 240 mains has the potential to provide an incredibly high current in comparison to a car charging system
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Triton Thrasher
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PostPosted: 15:52 - 13 Jan 2018    Post subject: Reply with quote

Nobby the Bastard wrote:
A charger plugged into 240 mains has the potential to provide an incredibly high current in comparison to a car charging system


My house has a 100 A fuse.

They make 100 A automotive alternators.
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ThatDippyTwat
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PostPosted: 16:01 - 13 Jan 2018    Post subject: Reply with quote

Triton Thrasher wrote:
Nobby the Bastard wrote:
A charger plugged into 240 mains has the potential to provide an incredibly high current in comparison to a car charging system


My house has a 100 A fuse.

They make 100 A automotive alternators.


100A@12v vs 100A@240V

The potential is decidedly different. The electronics in the charger limits the current available. Older car chargers had coils would to suit particular amperage ranges, hence why they needed to be suitable. As long as the output is withing the spec prvided by the battery, then it's fine, although trikle charging is almost always better .
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RhynoCZ
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PostPosted: 16:23 - 13 Jan 2018    Post subject: Reply with quote

Yes,

I = current, meassured in A
U = voltage, meassured in V

I was strictly speaking of units, because Triton Thrasher started with Volts and then somehow assumed the Amps were irrelevant.
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Last edited by RhynoCZ on 16:25 - 13 Jan 2018; edited 2 times in total
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Triton Thrasher
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PostPosted: 16:23 - 13 Jan 2018    Post subject: Reply with quote

ThatDippyTwat wrote:
Triton Thrasher wrote:


My house has a 100 A fuse.

They make 100 A automotive alternators.


100A@12v vs 100A@240V

The potential is decidedly different. The electronics in the charger limits the current available. Older car chargers had coils would to suit particular amperage ranges, hence why they needed to be suitable. As long as the output is withing the spec prvided by the battery, then it's fine, although trikle charging is almost always better .


I was probably misunderstanding what Nobby said. He's right- a very high current at 12 V DC could be supplied by a mains powered transformer and rectifier.

But, of course, 12 V potential difference won't put vast currents through circuits of high resistance.
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Triton Thrasher
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PostPosted: 16:27 - 13 Jan 2018    Post subject: Reply with quote

RhynoCZ wrote:
Yes,

I = current, meassured in A
U = voltage, meassured in V

I was strictly speaking of units, because Triton Thrasher started with Volts and then somehow assumed the Amps were irrelevant.


The amps in a car seem pretty irrelevant to a bike.
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ferrisio
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PostPosted: 16:43 - 13 Jan 2018    Post subject: Reply with quote

It's at this point that the thread should really be handed over to Photonic Induction to explore the relationship between current and voltage in a way the common man can relate to.
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grr666
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PostPosted: 18:45 - 13 Jan 2018    Post subject: Reply with quote

Just bought two of them, cheers OP. Thumbs Up
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arry
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PostPosted: 20:06 - 13 Jan 2018    Post subject: Reply with quote

grr666 wrote:
Just bought two of them, cheers OP. Thumbs Up


No worries. Just bought one myself actually - save me swapping the Optimate around between bikes and car.
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Moo.
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PostPosted: 20:39 - 13 Jan 2018    Post subject: Reply with quote

I went and bought one today too. Cheers for the heads up!

Let's see if it can revive a dead AGM battery..
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RhynoCZ
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PostPosted: 22:54 - 13 Jan 2018    Post subject: Reply with quote

Moo. wrote:
I went and bought one today too. Cheers for the heads up!

Let's see if it can revive a dead AGM battery..


If it won't charge a dead AGM battery, plug a good battery (doesn't have to be AGM) to the dead one and then plug the charger to the good battery. That'll trick the circuitry of the charger and start charging the dead one. Thumbs Up

By the way, you don't have to charge it up to full charge like this. Once your AGM battery is above 11V (I estimate 11.5V), which won't take long, you may unplug the good battery and plug the charger straight to the AGM battery that you want to charge.
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duhawkz
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PostPosted: 23:18 - 13 Jan 2018    Post subject: Reply with quote

Bodyguard wrote:
Triton Thrasher wrote:
How does <15 V from a running car charging system force too much current into a bike? I mean if you don't inadvertently reverse the jump leads' + & -.

Armchair Expert.

Someone who claims to know all the answers to a problem, situation or scenario but has little or no experience or real understanding of it. Usually found on internet forums or writing in the letters section of tabloid newspapers. When faced with educated people who disassemble their argument with facts, they often state they learned their experience at the "University of life".


Go on then, imbue us with your real world knowledge of vehicle charging systems and auto electrics oh great welder of sprockets
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M.C
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PostPosted: 23:47 - 13 Jan 2018    Post subject: Reply with quote

It was armchair experts that helped him fix his engine Thinking
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Chuffin Nora
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PostPosted: 00:04 - 14 Jan 2018    Post subject: Reply with quote

J = confused, measured in Rizlas . . .

RhynoCZ wrote:
I = current, meassured in A

RhynoCZ wrote:
...Once your AGM battery is above 11V (I estimate 11.5V),...
Thinking

Do you mean current estimate 11.5V?
Or wot.
Confused
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RhynoCZ
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PostPosted: 00:17 - 14 Jan 2018    Post subject: Reply with quote

Chuffin Nora wrote:
J = confused, measured in Rizlas . . .

RhynoCZ wrote:
I = current, meassured in A

RhynoCZ wrote:
...Once your AGM battery is above 11V (I estimate 11.5V),...
Thinking

Do you mean current estimate 11.5V?
Or wot.
Confused


What? Confused

And yes, the electric current is denoted by the letter I. Why? Ask Georg Ohm, or whoever decided that.
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Triton Thrasher
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PostPosted: 00:29 - 14 Jan 2018    Post subject: Reply with quote

duhawkz wrote:

Go on then, imbue us with your real world knowledge of vehicle charging systems and auto electrics oh great welder of sprockets


They've already been asked why there's going to be more current without higher voltage, but answer there was none.
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mpd72 CPT
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PostPosted: 16:04 - 14 Jan 2018    Post subject: Reply with quote

I bought one of these as my Optimate is playing up. Nice little charger, but it would be nice to have Tamiya style connectors on the leads so the crocodile clips can be swapped for a 12V cigar lighter style socket. I might modify it.

Also noticed that it doesn't like batteries under about 9V. It doesn't go into an automatic program on this charger, but the same battery (probably shot anyway as been in the bike all winter in the garage) on another charger seems to take a charge.
You can't seem to force this charger into a program or pulse charge, you push the mode button once and it detects it automatically, then lets you change program.
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