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Homemade Lipo Charger

Old 06-11-2013, 10:23 PM
  #26  
kyleservicetech
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Originally Posted by rf96816 View Post
Maybe. But this home-built charger is better than most you can buy. It charges each cell separately and doesn't need to balance.

Balancing is slow and often wears cells out quicker by wasting charge
during balancing. Balancing chargers are more complex and error prone.

Independent, non-balancing chargers like this one are better and simpler.

Balancing is bad. Charging each cell separately to the right voltage is way better.
Yeah, my two Cellpro Powerlab 8 chargers also don't work this way. What they do is bring the entire battery to full charge, while charging at the charging rate you've programmed in. As an example, I'm charging a 6S4P A123 battery pack at 30 Amperes, in the balance mode. It takes about 16 minutes to put a full charge back into them. (Don't try this with LiPos!!)

If your battery pack has cells that are WAY out of balance, the Cellpro Powerlab 8 charger goes into its "Safe Mode", where it completes the charging at a safe one half amp or so.

Take a look at a Cellpro graph on how this works. The attached PDF file shows how it works in greater detail.
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Old 06-11-2013, 11:32 PM
  #27  
JetPlaneFlyer
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Originally Posted by kyleservicetech View Post
(Don't try this with LiPos!!)
No problem with modern good quality LiPos, they charge at 10c or even higher in some cases. That would be 92A for a 2300mAh 4p LiPo


Full charge in 6 minutes if you could deliver the amps.
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Old 06-11-2013, 11:41 PM
  #28  
CNY_Dave
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I know my ThunderPower AC6 doesn't charge the good way.
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Old 03-12-2014, 08:37 PM
  #29  
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Default Help with the configuration

Hey guys, I have a question ... the output of this charger are:

1: +
2: -
3: -
4: -

but seeing my Lipo batteries are reversed ...

1: -
2: +
3: +
4: +

I have to change to make it work?
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Old 03-12-2014, 08:40 PM
  #30  
kyleservicetech
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Originally Posted by boltcrank View Post
Hey guys, I have a question ... the output of this charger are:

1: +
2: -
3: -
4: -

but seeing my Lipo batteries are reversed ...

1: -
2: +
3: +
4: +

I have to change to make it work?
What brand and what model of charger do you have??
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Old 03-12-2014, 09:36 PM
  #31  
JetPlaneFlyer
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Originally Posted by boltcrank View Post
Hey guys, I have a question ... the output of this charger are:

1: +
2: -
3: -
4: -

but seeing my Lipo batteries are reversed ...

1: -
2: +
3: +
4: +

I have to change to make it work?
I'm not sure what you are getting at to be honest

The main 'output' of a charger is just DC voltage, positive on red wire and negative on black.

Some cheap chargers charge via the balance lead, but same principal applies there. The two outer wires on the balance plug are the positive and negative. If you look at the balance plug from the side with the two retaining hooks positive is left and negative right.
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Old 03-12-2014, 11:08 PM
  #32  
hayofstacks
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Id sand off the safety slots on the battery and plug it in upside down. use a volt meter to make sure that's what needs to happen though.

Some of my sky lipo's had red to mark - and three black for positive.
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Old 03-13-2014, 12:09 AM
  #33  
fhhuber
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https://www.commonsenserc.com/produc...v8qhhnfb1ve837

Plugged backward will do no harm to this. So you can use it to positively determine your balance port wiring.

Plugging the balance port wrong with a charger may or may not lead to a fire... Depends on the charger.
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Old 03-13-2014, 01:55 AM
  #34  
boltcrank
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I did the 3-cell model proposed here ... http://shdesigns.org/lionchg.html

separate work correctly, but when I connect them according to the diagram: http://www.wattflyer.com/forums/atta...5&d=1181526867

cells 1 and 2 are shorted...

In the connection of 3 cells have the problem "in balance port"
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Old 02-01-2017, 03:11 PM
  #35  
r3triik
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Originally Posted by Ajoe View Post
The homebrew charger on duty

Charging 2S Lipo (8.4V), Two LEDs are ON

Charging 3S Lipo (12.6V), Three LEDs are ON
Hello my dear friend, I want to know how did you build that homemade LiPo-Battery Charger... I mean, could you (please) give me a complete list of all those components that you used, to make that "wonderfull" instrument?
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Old 02-01-2017, 08:06 PM
  #36  
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Originally Posted by r3triik View Post
Hello my dear friend, I want to know how did you build that homemade LiPo-Battery Charger... I mean, could you (please) give me a complete list of all those components that you used, to make that "wonderfull" instrument?
Cheaper to just buy one. You can get a cheap liPo charger for less than $10: https://hobbyking.com/en_us/hobbykin...30w-2s-4s.html

You arent going to be able to buy components for that. So it depends if you are interested in a electronics project, or if you want to actually charge batteries?
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Old 02-02-2017, 12:21 AM
  #37  
r3triik
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Originally Posted by JetPlaneFlyer View Post
Cheaper to just buy one. You can get a cheap liPo charger for less than $10: https://hobbyking.com/en_us/hobbykin...30w-2s-4s.html

You arent going to be able to buy components for that. So it depends if you are interested in a electronics project, or if you want to actually charge batteries?
That's true my friend, but, I'm from "Venezuela" and here buy that kind of stuff is really hard, at least in my case... So, that's why I want to know which are the components that the man has used to build that charger, because my cousin has a lot (but, A LOT) of electronics components that doesn't use and maybe I could find them there...

If you could help me, giving me a list of all the components that I need to build that, I'll be really thankful with you my friend...

By the way... It's more like an electronic project that I want to build.
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Old 02-02-2017, 07:09 AM
  #38  
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The components you need are clearly listed in the page that is linked on the opening post of this thread... What's wrong with that list?
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Old 02-02-2017, 04:54 PM
  #39  
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Oh my god... I'm so ashamed now dude ! Well, I hadn't seen that... Now I'm glad with you because of that. Thank you!
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