Anyone have the SkyRC NC2500 charger?

[Planz]

The Maha C9000 charging limit is 4000 mAh , not only 2000 mAh.

My typo. The manual says 20,000 mAh not 2,000mAh. I will update.

Specs	Maha	NC2500
Charging current	.2 to2A	0.2-2.5A
Delta Peak	?	3-15mV
Discharge termination	1V	0.5-1V
Maintenance charge	10mA	30mA
Temp. protection	?	55-70C
Input power	12V 2A	12V 2.5A
USB power	none	5V 1A
Supported capacity	100mAh-20000mAh	500mAh-3500mAh
Battery temp	NA	yes
Battery int. resistance	NA	yes
Battery volt graph	NA	yes
Backlight	Always on	Off after 10 mins
Firmware upgrade	?	via smart phone
Smart fan	NA	yes
Bluetooth	NA	yes
country origin	Taiwan	?
warranty	3 years	1 year
default charge AA	1000mA	1000mA
default charge AAA	1000mA	400mA
Buttons	4	7

 

[Viking]

My typo. The manual says 20,000 mAh not 2,000mAh. I will update.

Thats only in break-in mode. The regular charging limit is only 4000 mAh.
Also The discharge termination is 0.9 V

 

[Planz]

Thats only in break-in mode. The regular charging limit is only 4000 mAh.
Also The discharge termination is 0.9 V

Thanks for the clarification.
I got the data from the manual "PRINTED IN TAIWAN A03-3713420-496" and copyrighted 1998-2007 so I am not sure if this version is the latest.

 

[Viking]

Unfortunately , I don't think the manual mentions anything about the reguler charging limit.

 

[Power Me Up]

Thanks for the clarification.
I got the data from the manual "PRINTED IN TAIWAN A03-3713420-496" and copyrighted 1998-2007 so I am not sure if this version is the latest.

As far as I know, the manual hasn't been updated since the original version which did indeed have a 20,000 mAh limit for all modes and terminated discharges at 1.0V (no load)

Since the original version hasn't been available for a long time now, I think it would make sense to update your table with the details for the current version, even though it conflicts with what the manual says.

 

[Planz]

Yes, I'll be happy to update the table if someone could tell me what the values are for the current version.
Please be specific if the parameter is different from the spec I have listed.
Thanks. Interim update:

Specs	Maha	NC2500
Charging current	0.2 to2A	0.2-2.5A
Delta Peak	?	3-15mV
Discharge termination	0.9V	0.5-1V
Maintenance charge	10mA	30mA
Temp. protection	?	55-70C
Input power	12V 2A	12V 2.5A
USB power	NA	5V 1A
Supported capacity	100mAh-20000mAh	500mAh-3500mAh
Battery temp	NA	yes
Battery int. resistance	NA	yes
Battery volt graph	NA	yes
Backlight	Always on	Off after 10 mins
Firmware upgrade	NA	via smart phone
Smart fan	NA	yes
Bluetooth	NA	yes
country origin	Taiwan	?
warranty	3 years	1 year
default charge AA	1000mA	1000mA
default charge AAA	1000mA	400mA
Buttons	4	7

Maha manual: mahapowerex.eu/user-manuals/mh-c9000-manual-en.pdf

(Note that the Maha manual has not been updated for quite some time)


NC2500 manual: http://www.skyrc.com/index.php?route=product/product&product_id=179

 

[espresso]

On paper this looks like a step forward from C9000. It would be good to see some in-depth review and discuss the algorithms for charging. For example, the value of charge/discharge impulses. If they're 2,5A it's even worse for older cells than C9000.

 

[gopajti]

said an NC2500 dealer

"The charger is not perfect, loudly, difficult to remove the middle batteries, seems not to work with some android version.."

 

[markr6]

Looks AMAZING! Works with an app, very cool!! A little costly but could be my next charger.

Made in China, btw

 

[lowks]

Looks AMAZING! Works with an app, very cool!! A little costly but could be my next charger.

Made in China, btw

Aren't all of them nowadays ?

 

[markr6]

Aren't all of them nowadays ?

It seems that way. I personally don't care but wanted to fill in the "?" in the table posted by Planz

 

[Planz]

It seems that way. I personally don't care but wanted to fill in the "?" in the table posted by Planz

Updates below to include country of origin and charging limit:

Specs	Maha​	NC2500​
Charging current	0.2 to2A​	0.2-2.5A​
Delta Peak	?​	3-15mV​
Discharge termination	0.9V​	0.5-1V​
Maintenance charge	10mA​	30mA​
Temp. protection	?​	55-70C​
Input power	12V 2A​	12V 2.5A​
USB power	NA​	5V 1A​
Supported capacity	100mAh-20000mAh​	500mAh-3500mAh​
Charging limit	4000mAh​	?​
Battery temp	NA​	yes​
Battery int. resistance	NA​	yes​
Battery volt graph	NA​	yes​
Backlight	Always on​	Off after 10 mins​
Firmware upgrade	NA​	via smart phone​
Smart fan	NA​	yes​
Bluetooth	NA​	yes​
country origin	Taiwan​	China​
warranty	3 years​	1 year​
default charge AA	1000mA​	1000mA​
default charge AAA	1000mA​	400mA​
Buttons	4​	7​

 

[Viking]

The maha C9000 has temperature protection as well.
quote from there homepage. And remember this charger has 4 sensors , 1 for each slot:

the temperature sensors will safeguard battery overheating

http://www.mahaenergy.com/faq-c9000/

Also the way it detects end-of-charge:

The MH-C9000 uses a combination of Negative Delta V, Zero Delta V, Peak Voltage, time and temperature to determine the end-of-charge. In addition, proprietary algorithms are used.

http://www.mahaenergy.com/faq-c9000/

 

[Planz]

The maha C9000 has temperature protection as well.
quote from there homepage. And remember this charger has 4 sensors , 1 for each slot:




Also the way it detects end-of-charge:

Quick clarification on the comparison table:

NA means not available
? means value unknown yet. It does not mean not available.

 

[Viking]

Oh .... I see

 

[fabryd]

I wanna buy this charger, do you know if in the future the 3500mah limit will be in higher mahmps with fw upgrades?
That limit is only for break in batteries? For ex if i put a 4000mah battery in charge, not breakin, it will be fully charged?
Im so indecise between the nc2500 and the maha c9000

 

[ChibiM]

What`s the best price at the moment for this charger?

I really think its very good looking and has lotsof interesting features.
I don`t think there will be AA NiMh batteries with 4000mAh any time soon!!! so don`tworry.

 

[shelm]

i don't understand everything but in the review looks very beautiful:

http://reviewsdelinternas.blogspot.com/2013/09/skyrc-nc2500.html

 

[Power Me Up]

i don't understand everything but in the review looks very beautiful:

http://reviewsdelinternas.blogspot.com/2013/09/skyrc-nc2500.html

You can use Google Translate to get something a bit easier to understand:
http://translate.google.com.au/tran...u/2013/09/skyrc-nc2500.html&biw=1920&bih=1032

 

[lowks]

Personally for me the fan's temperature detection is spot on. I have tried putting in a few warm batteries and it starts up straight away. Once the batteries cool down after a bit, it then switches off.