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Old 02-26-2006, 07:14 AM   #1
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Default ice and li-po 8000mah

does anyone have any optimal settings to charge a 8000mah thunder power battery?i want to charge it fast but effecient with out destroying it.when i charge it with the ice chargers preset settings (except for changing it to 8000mah)it takes almost 3-4hours.it doesnt get hot anything.if you know any quicker settings please let me know.thanks
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Old 02-26-2006, 07:38 AM   #2
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According to TP's website, you should charge that battery at 1C. That mean you have a 8000mah battery, so charge it at 8 amps or less (I'd go 7amps). Make sure you pay very close attention when charging you Lipos!!
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Old 02-26-2006, 07:44 AM   #3
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when i try to go up on the amps it charges for a few minutes then the charge current drops to .08 or somewhere close to that why does it do that
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Old 02-26-2006, 07:51 AM   #4
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Don't worry, that's perfectly normal. It's just the way that Lipos charge
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Old 02-26-2006, 11:35 AM   #5
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First of all a lipo battery should not get hot at all during a charge. It will charge at 8 amps unitll it reaches the proper voltage then the current will drop as the battery reaches full capacity. Make sure you have all the settings correct, current, voltage, etc. It should take a little over an hour to fully charge a battery.
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Old 02-26-2006, 12:29 PM   #6
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Quote:
Originally Posted by PLANETSTEREO
when i try to go up on the amps it charges for a few minutes then the charge current drops to .08 or somewhere close to that why does it do that
Lipo and lead acid batteries are charged using the constant voltage method not the constant current method, so as the capacity of the battery comes up, the current must be reduced to keep a constant voltage in the battery. The voltage limit of the Lipo charge rate is 4.2volts/cell. The voltage limit on for my supernova when charging 12v lead acid battery is 2.33volts/cell or 14 volts.

If your I.C.E. charger drops to only .08amps after a few mins then the battery must be very close to full charge and the charger is topping off the battery, this part could take a while to get to 100% capacity. That is why even though the charger is set at 8 amps it will take longer than an hour to charge an 8AH(8000mah) battery.

Hope this helps some.
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Old 03-15-2013, 05:12 AM   #7
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Li-Pols are rated to be charged NO HIGHER than 1C ( basically their capacity in amps.) An 8000mah cell can be charged at a MAXIMUM of 8 amps. BUT...

Because it is a Lithium Polymer cell, you do not want to charge it at that rate. Those cells carry a great risk of burning explosively if overcharged.

At 3.5 amps, you will minimize the potential of the battery overcharging, but as you stated, it is going to take 2.5 to 3 hours to complete.

Just a word of warning:

Always charge Lithium Polymer cells in a fire proof box. Always monitor the battery. NEVER charge it unattended. If the battery is ever dropped, or jarred during a violent crash, cease using it. Inspect each cell for punctures or dents. If any are found, cut off the battery leads, pierce the cells with a screwdriver and immerse it in salt water for 24 hours to neutralize the cells.

NEVER charge or discharge dented or damaged cells. They can explode and burn. Lithium CANNOT be extinguished with a standard fire extinguisher once it begins to burn.

I know this news sucks, especially since you spent over $300.00 for 1 battery. But that's the risk you run by using LiPol. ( You could have gotten 7 IB3800's for the price of 1 LiPol, and not have the risk of fire. IB cells give nearly 20 minute runtimes as well.
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