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Electric Stunt => Gettin all AMP'ed up! => Topic started by: JordanSegal on September 01, 2017, 09:26:56 PM
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I have been using an EPbuddy paraboard. Could this be part of the reason I am getting very short battery life? 20 to 30 cycles on a set of 4 batteries.
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You might note your system and use. What batteries, what flight system, what charge or voltage remaining after flying.....
Proper use of parallel charging does not inherently mean shorter battery life. In addition to having same cell count batteries, it is best to have relatively similar packs with respect to age and internal resistance.
Explain more of your routine.
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I have been using a Paraboard for years with no problems with battery life.
If you haven't got one yet; get a battery tester that shows the percentage left in the battery after a flight. Don't let it get below 15%.
I regularly go down to just below 20% with no problems.
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I thought the most important consideration using a paraboard (besides same cell count) was making sure the batteries were all at the same voltage before plugging in? I'm surprised nobody mentioned that yet.
Maybe I'm mistaken.
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Jordan needs to share his routine of use, charging, and balance. But to his question, use of a paraboard doesn't inherently decrease your cycles. some part of the routine more likely.
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That's true, charger won't balance each individual cell on each battery as it reads only as many cells as one battery has. ex if you're charging two 4cell batteries you have 8 cells but charger only reads 4 cells. You need to periodically balance charge each battery pack individually to even them out.
MM
I read this a lot, but it does not make sense.
If you have the balance leads connected then all parallel cells will end up at the same voltage. Nothing else is possible.
So if the charger says that the "pack" is balanced then every pack you have plugged in will be balanced.
One issue I found with the paraboard is the LED that some of them have is connected to only one of the "cells", not the total voltage.
If you leave the batteries plugged in after charging/discharging/storage/whatever the voltage on that set of cells will end up lower. I disconnected the LEDs on mine to avoid this.
Pat MacKenzie
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What brand of batteries are you using?
James
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I am using 4 Zippy compact 3000-5S-40C batteries. They are discharged to about 30% after a flight. The charger is an icharger 106B+. After charging the cells 1 thru 4 read 4.178 to 4.193 and cell 5 reads 4.244 to 4.251 on all 4 batteries.
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After charging that is the reading on the i106 before you take them off?
And readings of each of the 5 cells if you charge one battery at a time plugged into the same board?