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Author Topic: How long to balance  (Read 1052 times)

Online Paul Taylor

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How long to balance
« on: October 28, 2013, 06:30:40 AM »
Ok I know there might be other variables but on average how long should it take to balance a 4s - 14.8 v 3000mAh 25-50c battery at .2amp?

Reason I ask is because my ran until the charger timed out @ 160 minutes.
Brand new battery.
Paul
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As my coach and mentor Jim Lynch use to say every time we flew together - “We are making memories

Offline John Cralley

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Re: How long to balance
« Reply #1 on: October 28, 2013, 08:40:46 AM »
We need to know more Paul. Were you charging the battery to regular full capacity (4.2 volts per cell) or were you just balancing the battery at storage level (which is what it should be when you got it -- you say it is new)???

If you were charging the battery using balancing mode on your charger, you probably ought to set the charger for 2-3 amps (3 amps is 1C). Assuming you have a reasonably good charger it would bring the voltage up to near 4.20 volts per cell and then taper the amps down to essentially a trickle charge while it balanced the battery. If you have set your charger to charge at 0.2 amps, it will take a long time to get up to near 4.20 volts and will time out (as you have observed) before the battery gets charged and balanced. New batteries are delivered at storage level (about 50% of full charge) and at 0.2 amps it would take 7.5 hours to put in 1.5 amps (about what you need to bring the battery from storage to full charge).

Most Lipo chargers let you check the voltage for each cell during the charging operation (assuming you are charging in balancing mode using the balancing plug). Check and see what the readings are for the cells. If the individual voltages are not at, say 4.18 to 4.20 volts, your battery is not yet charged.

Hope this helps.

Hope this helps
John Cralley
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Offline RC Storick

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Re: How long to balance
« Reply #2 on: October 28, 2013, 09:25:01 AM »
Ok I know there might be other variables but on average how long should it take to balance a 4s - 14.8 v 3000mAh 25-50c battery at .2amp?

Reason I ask is because my ran until the charger timed out @ 160 minutes.
Brand new battery.

on my charger about 10 minutes for 6 4s 3300
AMA 12366

Online Paul Taylor

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Re: How long to balance
« Reply #3 on: October 28, 2013, 11:16:10 AM »
We need to know more Paul. Were you charging the battery to regular full capacity (4.2 volts per cell) or were you just balancing the battery at storage level (which is what it should be when you got it -- you say it is new)???

If you were charging the battery using balancing mode on your charger, you probably ought to set the charger for 2-3 amps (3 amps is 1C). Assuming you have a reasonably good charger it would bring the voltage up to near 4.20 volts per cell and then taper the amps down to essentially a trickle charge while it balanced the battery. If you have set your charger to charge at 0.2 amps, it will take a long time to get up to near 4.20 volts and will time out (as you have observed) before the battery gets charged and balanced. New batteries are delivered at storage level (about 50% of full charge) and at 0.2 amps it would take 7.5 hours to put in 1.5 amps (about what you need to bring the battery from storage to full charge).

Most Lipo chargers let you check the voltage for each cell during the charging operation (assuming you are charging in balancing mode using the balancing plug). Check and see what the readings are for the cells. If the individual voltages are not at, say 4.18 to 4.20 volts, your battery is not yet charged.

Hope this helps.

Hope this helps
Thanks John
This is a big help. And yes it was in balance mode.
Paul
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As my coach and mentor Jim Lynch use to say every time we flew together - “We are making memories

Online Paul Taylor

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Re: How long to balance
« Reply #4 on: November 02, 2013, 09:07:22 PM »
Ok think I figured it out. My power supply is 13v 1.5 amps. Need a Beeffer power supply
Paul
AMA 842917

As my coach and mentor Jim Lynch use to say every time we flew together - “We are making memories

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