# Thread: Maha-c9000 what does MAH mean?

1. ## Maha-c9000 what does MAH mean?

Hey I just got a maha-c9000 charger.

What does the MAH mean? is thi show much power is in the battery right now?

How can I tell how full the batteries are when I first put them in?

Peter

2. ## Re: Maha-c9000 what does MAH mean?

Originally Posted by apples
Hey I just got a maha-c9000 charger.

What does the MAH mean? is thi show much power is in the battery right now?

How can I tell how full the batteries are when I first put them in?

Peter
milli ampere hours, that is energy and is current drain multiplied with time, i.e. 2000mAh is 2000 mA in one hour or 100 mA in 20 hours

You batteries are marked with how many mAh the can contain when they are full and the Maha charger displays how many mAh it fills into the batteries or discharges from the batteries, depending on what program you select.

The only way to measure accurately how much is on you batteries, is by discharging them.

3. ## Re: Maha-c9000 what does MAH mean?

so right now it is saying:

997MA - is this how much I am putting in (call it 1000). so 1000 into a 2000mAh means it needs to charge for 2hrs from flat at 1000 milli. amps?

504MAH - so that means if it displays say 500mAh, it has put in 500 into a battery that can hold 2000? So when it stops, and if it keeps cycling throught the information what ever it stops at is how much power it put in then?

So a 2000mAh battery and the charger puts in say 1500ma, then the battery was abiout 1/4 full then?

I understand that the battery will never be spot on 2000mAh.

Peter

4. ## Re: Maha-c9000 what does MAH mean?

Originally Posted by apples
so right now it is saying:

997MA - is this how much I am putting in (call it 1000). so 1000 into a 2000mAh means it needs to charge for 2hrs from flat at 1000 milli. amps?
Correct. Or nearly correct, there are some small losses, i.e. you may need to put 1100mAh into a battery, even if you only has used 1000mAh.

Originally Posted by apples
504MAH - so that means if it displays say 500mAh, it has put in 500 into a battery that can hold 2000? So when it stops, and if it keeps cycling throught the information what ever it stops at is how much power it put in then?
Yes, if you have selected charge. If you had selected discharge it would display how much energy was in the battery.

Originally Posted by apples
So a 2000mAh battery and the charger puts in say 1500ma, then the battery was abiout 1/4 full then?

I understand that the battery will never be spot on 2000mAh.

Peter
This is also correct. I think you have got the idea now.

5. ## Re: Maha-c9000 what does MAH mean?

the question is MAH shouldn't that mean Mega Ampere Hours?

6. ## Re: Maha-c9000 what does MAH mean?

I think rizky is pointing out that it should be mA and mAh.

But, since we're on the subject, wouldn't it be Mega Hours as well?

I screw up various acronyms all the time. For the past month or so, I've been typing NiCD when it really should be NiCd or NiCad. In the case of mA and mAh though, those are actually symbols, not acronyms, for those terms.

Dave

7. ## Re: Maha-c9000 what does MAH mean?

Originally Posted by rizky_p
the question is MAH shouldn't that mean Mega Ampere Hours?
Isn't H for Henry (inductance)?

8. ## Re: Maha-c9000 what does MAH mean?

Originally Posted by HKJ
milli ampere hours, that is energy and is current drain multiplied with time, i.e. 2000mAh is 2000 mA in one hour or 100 mA in 20 hours
Not directly a measure of energy, but that of electrical charge. It is like the capacity (not capacitance) of the battery.

Hugh

9. ## Re: Maha-c9000 what does MAH mean?

Originally Posted by oldpal
Not directly a measure of energy, but that of electrical charge. It is like the capacity (not capacitance) of the battery.

Hugh
That is, of course, correct. Together with the voltage you can calculate the energy or, more correctly, estimate the energy (battery voltage is not constant).

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