RC India
Welcome Guest, please login or register.
 
Pages: 1 2 [All]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: December 02, 2009, 09:04:53 PM »
amir
Plane Lover
Senior Member

***

Reputation Power: 4 
amir has no influence.
Offline Offline

City: Lucknow
State: Uttar Pradesh
RC Skills: Expert
Posts: 247
Join Date: Mar, 2009

fbots:::The future of Robotics




hi
how to charge single celled lipos ?
will mobile charger work?
anyone have experience with it ?
Logged

Amir Shabeeh Ahmed
www.fbots.in
 

Read
« Reply #1 on: December 02, 2009, 09:22:17 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



the idea of charging using mobile charger was proposed by me lol
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #2 on: December 02, 2009, 09:23:37 PM »
amir
Plane Lover
Senior Member

***

Reputation Power: 4 
amir has no influence.
Offline Offline

City: Lucknow
State: Uttar Pradesh
RC Skills: Expert
Posts: 247
Join Date: Mar, 2009

fbots:::The future of Robotics



yaa..
but i was the first to post
 Wink Wink Wink Wink
Logged

Amir Shabeeh Ahmed
www.fbots.in
 

Read
« Reply #3 on: December 02, 2009, 09:57:36 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



well folks this topic was put up when we two were talking of 1 cell lipo as i asked him to buy for me

actually i have charged many types of batteries including ni-mh , ni-cd , li-ion [of mobiles] all barely- by just using that charger and they work fine

but i don't know the results of it on lipo
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #4 on: December 03, 2009, 01:00:56 PM »
RotorZone
Forum Administrator
Forum Hero

*****

Reputation Power: 8 
RotorZone has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Advanced
Posts: 607
Join Date: Mar, 2009

RotorZone.com



The mobile chargers usually give out a little over 5V. The actual charger chip is inside your phone. So no, you cannot just plugin a LiPo.

Building a single cell LiPo charger is quite easy if you can do soldering. There are no balancing issues, so the circuit for a current and voltage limited charger is very simple and cheap.
Logged

 

Read
« Reply #5 on: December 03, 2009, 01:35:51 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Do you have any recommendations for such a circuit with parts that are easily available locally ?
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #6 on: December 03, 2009, 01:37:50 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



i cAN do soldering tell me the circuit
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #7 on: December 03, 2009, 04:11:19 PM »
RotorZone
Forum Administrator
Forum Hero

*****

Reputation Power: 8 
RotorZone has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Advanced
Posts: 607
Join Date: Mar, 2009

RotorZone.com



See page 20 "current limited voltage regulator" and current limited 6V charger on page 22 of LM317 datasheet. Read this datasheet for the details of the regulator IC. You need to set the output voltage to 4.2V and current to 1C value of of your battery.

Adaptation of this circuit with component values for LiPo cells has been popularised by http://shdesigns.org/lionchg.html in RC world. You can pick up the circuit from here if you don't want to do the calculations yourself.

Since you are going to use a mobile charger with about 5V output, there is not enough headroom for dropout voltage of LM317. You could substitute LM2940 in place of LM317 for your application.
« Last Edit: December 03, 2009, 04:13:38 PM by RotorZone » Logged

 

Read
« Reply #8 on: December 03, 2009, 04:29:22 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



any thing simpler than it which requires less things-something simple availble?

and i have a charger that outputs 4.5v at 600mah
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #9 on: December 03, 2009, 04:30:24 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



is that charger ok?
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #10 on: December 03, 2009, 04:36:10 PM »
sushil_anand
Plane Lover
Forum Hero
*****

Reputation Power: 17 
sushil_anand has no influence.
Offline Offline

City: MUMBAI
State: Maharashtra
RC Skills: Intermediate
Posts: 1274
Join Date: Jul, 2009



Quote
is that charger ok?

No. You will need at least 6V at the rated current (1C) of your LiPo.
Logged

Hangar: Zlin 50L -120, CMPro Super Chipmunk, Ultimate Bipe EP, Imagine 50, Christen Eagle 160, Ultra Stick, Super Sports Senior
 

Read
« Reply #11 on: December 03, 2009, 04:51:58 PM »
RotorZone
Forum Administrator
Forum Hero

*****

Reputation Power: 8 
RotorZone has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Advanced
Posts: 607
Join Date: Mar, 2009

RotorZone.com



Don't try experiments with LiPo, overcharging can result in fire.

It doesn't really get simpler than the first circuit http://shdesigns.org/pdf/lionchg.pdf. If that is challenging, you have to look at buying.
Logged

 

Read
« Reply #12 on: December 03, 2009, 09:40:15 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



can u tell me where to buy one?
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #13 on: December 04, 2009, 11:28:42 AM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



No. You will need at least 6V at the rated current (1C) of your LiPo.

Since the mah rating of the lipo was not mentioned, how was this calculation done ?
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #14 on: December 04, 2009, 04:23:19 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



http://www.funnhobby.com/showdetails.aspx?id=1152

is this charger ok
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #15 on: December 04, 2009, 04:34:41 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



The page does not display well, but it says the output is 8v or 12v.  So that would work for two cell or three cell lipos. 

You were after single cell chargers, right ?
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #16 on: December 04, 2009, 04:43:02 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



Quote
is that charger ok?

No. You will need at least 6V at the rated current (1C) of your LiPo.

ya i was over charging 1cell lipo only but read the post above to understand my intentions
« Last Edit: December 04, 2009, 04:48:22 PM by anwar » Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #17 on: December 04, 2009, 04:50:04 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



ya i was over charging 1cell lipo only but read the post above to understand my intentions

Which post ? Anyways, this does not look like a good match for one cell lipo charging.
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #18 on: December 04, 2009, 05:27:05 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



then tell other possibilities other than those given by rotorzone
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #19 on: December 04, 2009, 05:29:16 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Just curious, what are you guys planning to do with the one cell lipo ?  Almost all routine use of lipos in the RC world happens on two cell lipos or higher, so this is most interesting  Head Scratching
« Last Edit: December 04, 2009, 05:31:46 PM by anwar » Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #20 on: December 04, 2009, 05:36:59 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



TO BE USED ON SMALL PLANES WITH BRUSHED MOTORS THUS MAKING IT VERY CHEAP
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #21 on: December 04, 2009, 05:38:58 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



Well,Anwar bahiya i expected that u used small electric  helis which run on these batteries and thus should be able to answer this question
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #22 on: December 04, 2009, 05:48:46 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Hmmm..  they are borderline, more like toys  Wink

And they come with their own charger, did you lose yours ? Single cell chargers are harder to find, precisely for the reason I mentioned (they are not common in the RC world). 

For example, if you are willing to pay Rs550 for a charger, why not spend a little more, and get another toy heli or toy plane ?

Of course they are available...

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXWLT6 (expensive)
http://www.rcgroups.com/forums/showthread.php?t=1116487 (some cheap options)

If you absolutely do not want to build your own based on the plan Rajesh posted (which seems to be a widely used option), eBay sounds like your best route.
« Last Edit: December 04, 2009, 05:56:01 PM by anwar » Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #23 on: December 04, 2009, 06:22:56 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



Actually Amir bhaiya has order multiple lipos [single cell] for me-they are of two tpyes with different 'mah'
ask him the 'mah' of the batteries and tell us the charger for them[better if its is 1 or cheap two of them]
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #24 on: December 04, 2009, 07:44:54 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Rajesh - What would be a best guess on the total cost of building that first circuit you posted using locally available components ?
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #25 on: December 04, 2009, 09:51:38 PM »
RotorZone
Forum Administrator
Forum Hero

*****

Reputation Power: 8 
RotorZone has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Advanced
Posts: 607
Join Date: Mar, 2009

RotorZone.com



It is really cheap, may be about 25Rs or so. Of course a DC power supply - adapter or any other source is extra.
Logged

 

Read
« Reply #26 on: December 04, 2009, 11:06:00 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Ankur - Aren't you missing out on a great cost opportunity by not soldering it yourself ?  Head Scratching  Shocked 
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #27 on: December 05, 2009, 06:49:03 AM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



actually currently i can't  solder since i have broken my hand so can use my left hand only
when it'll recover i'll definitely try it
meanwhile anyother ideas/comments
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #28 on: December 08, 2009, 12:53:16 PM »
Ashta
Plane Lover
Forum Hero

*****

Reputation Power: 9 
Ashta has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 623
Join Date: May, 2009



i cAN do soldering tell me the circuit

To safely charge a LIPO, one has to follow the charging algortham for the LIPO. There are many Lipo charger ICs available which has these built in algoritams implemented thru Timers/ comparators/ temperature sensors etc.
I had made a charger as part of an GPS tracker board, (pl see the photos)few years back, using MAX 1758 IC. I was using this board for some time for my RC purpose till i bought a standard charger.
For another DIY pl see this link. this uses a microchip controller.
http://www.rcgroups.com/forums/showthread.php?t=793441




PC081920.jpg
Re: charging single cell lipo
* PC081920.jpg (43.56 KB, 640x480 - viewed 1217 times.)
This post has 1 more images(s)/attachment(s). Please login or register to view them.
« Last Edit: December 08, 2009, 01:03:42 PM by Ashta » Logged

You can't be first because you do not know!
 

Read
« Reply #29 on: December 08, 2009, 02:42:33 PM »
sushil_anand
Plane Lover
Forum Hero
*****

Reputation Power: 17 
sushil_anand has no influence.
Offline Offline

City: MUMBAI
State: Maharashtra
RC Skills: Intermediate
Posts: 1274
Join Date: Jul, 2009



Quote
Since the mah rating of the lipo was not mentioned, how was this calculation done ?

The relevant part was the minimum voltage needed to charge a single cell LiPo since there is a drop across the regulator.  The 1C refers to the current rating of the Lipo. If it is 600 mAH then 1c would be that. If 2,000 MAh then 2A, and so on.
Logged

Hangar: Zlin 50L -120, CMPro Super Chipmunk, Ultimate Bipe EP, Imagine 50, Christen Eagle 160, Ultra Stick, Super Sports Senior
 

Read
« Reply #30 on: December 08, 2009, 04:43:18 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



So the gist is that at 6V is needed to charge something to 4.2V accounting for the drop on the regulator ? Was the 6V calculated by consulting the datasheet of the regulator, or was it an approximation ?
« Last Edit: December 08, 2009, 05:38:36 PM by anwar » Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #31 on: December 20, 2009, 06:01:39 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



the mah of the batteries are 850 and 138
please tell me the adequate chargers
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #32 on: December 21, 2009, 11:31:34 AM »
sushil_anand
Plane Lover
Forum Hero
*****

Reputation Power: 17 
sushil_anand has no influence.
Offline Offline

City: MUMBAI
State: Maharashtra
RC Skills: Intermediate
Posts: 1274
Join Date: Jul, 2009



I would suggest a supply with a minimum voltage of 7.5 DC. 

Referring to the circuit, R1 - which is the current limiting resistor - would be 0.75  and 4.7 ohms for 860 and 138 mA. Please note that these resistors will limit the MAXIMUM current. Actual setting of the charge current (within this limit) will be set by R4. You will also need to change R2 to 2700 ohms.

All these refer to the first diagram in the link.
Logged

Hangar: Zlin 50L -120, CMPro Super Chipmunk, Ultimate Bipe EP, Imagine 50, Christen Eagle 160, Ultra Stick, Super Sports Senior
 

Read
« Reply #33 on: December 25, 2009, 10:10:05 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



I would suggest a supply with a minimum voltage of 7.5 DC. 

Referring to the circuit, R1 - which is the current limiting resistor - would be 0.75  and 4.7 ohms for 860 and 138 mA. Please note that these resistors will limit the MAXIMUM current. Actual setting of the charge current (within this limit) will be set by R4. You will also need to change R2 to 2700 ohms.

All these refer to the first diagram in the link.

setting r1 to the desired values will work for this circuit?
http://shdesigns.org/pdf/lionchg2.pdf

also can diode d1 in the above circuit be replaced with a led[since i have a bunch of them just i need to get that LM317T adj. regulator and 2N2222A NPN trans. i 'll make it
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #34 on: December 28, 2009, 11:08:34 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



am i right?
please answer my question soon as i m not able to make my charger circuit due to these confusions
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #35 on: December 29, 2009, 12:08:51 AM »
RotorZone
Forum Administrator
Forum Hero

*****

Reputation Power: 8 
RotorZone has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Advanced
Posts: 607
Join Date: Mar, 2009

RotorZone.com



No you cannot replace D1 with LED. D1, R6, Q2, R5 and DS1 are for LED indication that charging is going on. If you use other means to monitor the current, for example using a meter, then you can get rid of all these components and put a short in place of D1.
Logged

 

Read
« Reply #36 on: January 04, 2010, 04:52:30 PM »
sushil_anand
Plane Lover
Forum Hero
*****

Reputation Power: 17 
sushil_anand has no influence.
Offline Offline

City: MUMBAI
State: Maharashtra
RC Skills: Intermediate
Posts: 1274
Join Date: Jul, 2009



Ankur

My apologies for not replying to you earlier. I was out of town for 10 days in locations not too accessible to the net.

Rotorzone is correct. But do note that the "monitor" circuit just tells you that some charging is taking place but not the actual current.
Logged

Hangar: Zlin 50L -120, CMPro Super Chipmunk, Ultimate Bipe EP, Imagine 50, Christen Eagle 160, Ultra Stick, Super Sports Senior
 

Read
« Reply #37 on: January 05, 2010, 01:42:23 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



ok,thanks for help
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #38 on: January 05, 2010, 07:13:46 PM »
sahilkit
LOVE MICRO RC
Plane Lover
Forum Hero

*****

Reputation Power: 18 
sahilkit has no influence.
Offline Offline

City: Hyderabad
State: Telangana
RC Skills: Beginner
Posts: 1533
Join Date: Mar, 2009

MICROSTAR 2000



i have built this charge and works fine ! but precautions have to be taken while using the charger !!!

http://www.rcindia.org/batteries-and-chargers/diy-lithium-ion-charger-1-3-cellsselectable-current-for-60-conditions-apply-!/
« Last Edit: January 05, 2010, 07:16:34 PM by sahilkit » Logged

Today might be a great and wonderful day. It depends on you.
 

Read
« Reply #39 on: March 06, 2010, 04:03:46 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



does those loingchgrs stop charging automatically or is it mannual??
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #40 on: March 06, 2010, 07:10:22 PM »
sahilkit
LOVE MICRO RC
Plane Lover
Forum Hero

*****

Reputation Power: 18 
sahilkit has no influence.
Offline Offline

City: Hyderabad
State: Telangana
RC Skills: Beginner
Posts: 1533
Join Date: Mar, 2009

MICROSTAR 2000



they stop charging automatically and as an indication the led light goes out (meaning battery fully charged n on standby)
Logged

Today might be a great and wonderful day. It depends on you.
 

Read
« Reply #41 on: March 06, 2010, 10:58:10 PM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



ok thanx
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Pages: 1 2 [All]   Go Up
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Wanted Single cell LiPO battery
Wanted
sandeepm 0 1556 Last post November 29, 2011, 10:59:06 AM
by sandeepm
For sale NIB OS 46 AX, NIB 3 cell 3000 MAh lipo, NIB 3 Cell 2200 MAh lipo
For Sale
sravan 18 10659 Last post June 09, 2012, 01:15:56 PM
by sravan
Single cell 2200 mah lipo
Wanted
hangingtough 2 1863 Last post October 14, 2012, 10:27:23 AM
by hangingtough
Wanted Single Cell Lipo
Wanted
sandeepm 0 1223 Last post October 27, 2012, 07:35:15 PM
by sandeepm
Need single cell for TX lipo 2650 mah and Turnigy brand
Wanted
atulrajguru9 5 2574 Last post November 14, 2013, 05:31:41 PM
by atulrajguru9