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Old 07-21-2008, 07:40 PM   #1
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Default Lipo Battery Question

Being new to the Lipo scene, I've got a question for all you Lipo battery experienced guys... I have a Peak Racing 4800 2S2P Lipo pack that has been sitting for about a year. I wasn't the last one to use it so I am not sure how much charge was left in it after its last use. How do I check to see if its still ok to charge?
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Old 07-21-2008, 07:44 PM   #2
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Quote:
Originally Posted by RobS View Post
Being new to the Lipo scene, I've got a question for all you Lipo battery experienced guys... I have a Peak Racing 4800 2S2P Lipo pack that has been sitting for about a year. I wasn't the last one to use it so I am not sure how much charge was left in it after its last use. How do I check to see if its still ok to charge?
I would just put it on a charger and if its to low it wont chage and will probly say something along the line of "Current to low". Other than that I dont see anything that would make it an issue to charge it.

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Old 07-21-2008, 08:00 PM   #3
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Default hard cases li-po battery manufacturer

hi. Robs ....this is easy to check it.
1. check the voltage.simple li-po voltage is 3.7V. after discharge the the is around 3.0V....full charge is 4.0V...
2. if you have a tool for check the capacity will more easy ....
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Old 07-21-2008, 08:20 PM   #4
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What is the toold called to check volts. I may have zapped a lipo myself and need to check voltage.
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Old 07-21-2008, 08:36 PM   #5
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Well I've got the pack taking a charge and its showing ~8.3 volts. I have it set to 4.8 amps for a charge but right now its only taking in 0.25 amps? Is this normal? I'm using the Checkpoint TC-1030 charger with the Checkpoint Pro Balancer in charge thru mode...
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Old 07-21-2008, 08:49 PM   #6
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Yes that should be normal.

Your pack will only charge at the 4.8amps you set during the middle of the charge.

On CC/CV or Constant Charge, Constant Voltage the charge starts at a set amperage. In your case 4.8amps then as the pack reach the terminal voltage of 4.2V per cell the amperage is decreased untill it takes 0 amps to maintain 4.2V per cell.

Some chargers slowly increase the amperage if the voltage of the cell is under 3.5V. Then after it will give the full amperage you selected.

Last edited by trailranger; 07-21-2008 at 10:16 PM.
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Old 07-21-2008, 09:06 PM   #7
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Yes that should be normal.

Your pack will only charge at the 4.8amps you set during the middle of the charge.

On CC/CV or Constant Charge, Constant Voltage the charge starts at a set amperage. In your case 4.8amps then as the pack reach the terminal voltage of 4.2V per cell the amperage is decreased untill it takes 0 amps to maintain 4.2V per cell.

So chargers slowly increase the amperage if the voltage of the cell is under 3.5V. Then after it will give the full amperage you selected.
Ok, thats exactly what I was looking for, thanks! I think I got this all figured out now...lol
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