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Thuderpower 2070 extreme lipo question

Old 10-19-2007, 08:50 PM
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Default Thuderpower 2070 extreme lipo question

Hello everyone just have a quick question bout the Thuderpower 2070 extreme lipo. How far should i discharge it. I know bout landing as soon as i feel a power drop but i am looking for numbers also. I usually fly bout 12 minutes hovering and 8 or so mixed fff and loops and rolls and few other things. I usually put back between 1500-1800 mah into the battery is that good or did i discharge it too much.
Old 10-19-2007, 10:41 PM
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Default RE: Thuderpower 2070 extreme lipo question

lipos go on volts, u cant let it drop below 3 volts a cell...if it does you change the chemical comp of the batt and it goes bad faster.....some ESC's have a soft cut off you can set for what type (how many cells) of lipo you use....if you dont have one like that...as soon as it drops in power, land it and charge the batt because you dont want to take the chance of ruining the battery. i use a 11.1v 3s1p 1300mah and 2100mah lipos and my ESC will start killing the power to the motor when it gets to that time and when i hook them up to the charger they read around 10.3 - 10.5 volts. (full charge is 12.6volts)
Old 10-20-2007, 06:26 AM
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Default RE: Thuderpower 2070 extreme lipo question

If you put back in over 80 percent of the capacity its over discharged.
Old 10-20-2007, 08:50 AM
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Default RE: Thuderpower 2070 extreme lipo question

navihawk...You do not want to charge a Lipo battery right after flight. It must cool down. If you attempt to charge a Lipo while it is warm you run the risk of damaging the battery and potential starting a fire.

I run the same batteries and I run a headspeed around 3000rpm doing flips, rolls, inverted and other things and my flight times are timed to 6 minutes. When I get home I put back about 1500mah which is just below the 80% rule and the voltage reads 10.6v to 10.8v.

I would be very cautious with the 12 minute flight time, that seems a little too long for that battery and heli combination. I ruined a $80 pack already.
Old 10-20-2007, 01:13 PM
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Default RE: Thuderpower 2070 extreme lipo question

Hi: I have been starting to hover my trex and I have the Alling 2100 Lipo Battery. I Have the Trex SA version with the stock esc and motor, ESC should be programmed according to the ESC manual and there is a battery protection setting, I have set the middle battery protection and I want to know how far from this point are the low and high battery protection. Is low setting safe enough?
Thanks.
Old 10-21-2007, 02:51 AM
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Default RE: Thuderpower 2070 extreme lipo question

If you're using the Align ESC tat usually comes with it, the esc will give power in pulses and you may notice a tail wag resulting from the changing torque. That's when you know yo need to land yesterday. With my batts that typically means that I've got about 10.5 volts in the pack.
Old 10-22-2007, 11:06 AM
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Default RE: Thuderpower 2070 extreme lipo question

Thanks!!
Old 10-22-2007, 06:36 PM
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Default RE: Thuderpower 2070 extreme lipo question

These batteries are expensive I would set the low power cut to the highest setting to further protect against damage to the battery will occur. With the middle setting you are only probably getting an extra 1 min, not worth the chance to me. Ask me how I know.
Old 10-23-2007, 03:22 PM
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Default RE: Thuderpower 2070 extreme lipo question

This is my first 2100 mAh battery and as you say it's expensive, Id' like to take care of it as much as I can. What is the most common cause to toast them?

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