I have to this point been using a balance charger and charging through balance taps. I am now swithching to Flightpower packs and with the edition of ICE charger "thanks SJFE" I am told its ok to charge through discharge leads. My Dilema is... Even on the site im purchasing from its states DO NOT charge through to esc or discharge leads. YET the charging system they say to use itself uses disharge leads to charge. WHA... ??? So are they just covering their butts by printing that or whats the real deal?
Another LiPo question
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ok that makes some sense, thanks doozie. So does the chargers know when to stop or do you have to know how many MAh that need to go in to reach full charge and do the math by timing and charge rate?Comment
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I use ICE chargers all the time, but I use them with Hyperion LBA10 balancers... these balancers plug into both the taps, and the power leads... my charger plugs into the balancer... so I'm not really sure exactly WHERE the charge to the cells is coming from, but judging from the size of the wires for the power leads, I'd have to say it's going through the taps... The leads going to the power leads of the pack from the balancer are only about 20-awg...Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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The Hyperion LBA-10 charges through the battery leads and balances by discharging to even cell voltage through the balance tap.Don't get me startedComment
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I kinda understood it as this...
You have to balance charge the packs about every 3 runs or so, but you do not have to balance charge every run.
Normally, I go out for the day, and my packs are balanced and charged. As I drain them down, I let them cool a bit and toss'em back on the charger. I use the discharge leads to charge at 1c or as close to as I can. Of course I use lipo chargers and they all cut off at 4.2 volts per cell.
My thing is, if you keep your packs balanced, then if you charge from the discharge leads the pack should pretty well be topped right off and balanced when it peaks out right?
(also, my PQ balancer JUST uses the balancer taps when it is in use. meaning, when I use it to charge, I do not plug the discharge taps in. I only plug the balance tap in. I still use some chinese lipos, and my chinese charger that has JST connectors needs to be connected at the balance tap, AND the discharge leads or else it errors and will not start the charge. Whatever works I guess....:-) )Last edited by FE_Chris; 12-23-2007, 10:58 PM.Fast Electric and Fast Ford's / V8 Mustang EnthusiastComment
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Good stuff gents, thanks for all the info. Its still prolly less complicated than I make it in my head. I am so used to just plugging them in and just checkin em very often, and when the green lights are on they are ready to go. As I posted before though a 3S 2200 pack takes almost 3hrs to charge. well going to 4S 4350 packs that just aint gonna cutit unless races are about 6hrs apart.HA! Im still gonna purchase 4 packs but thats prolly it for this year.Comment
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Ok, just so I dont have to start a new thread.. What exactly does "charge @ 1C" mean? As to my knowledge this would vary from pack to pack as to the MAh rating. Am I correct. So if I do the math from Reddy's calc. A 3750MAh pack at 25C, 1C would be like 3.75A ? I guess that sounds about right. Please inform before I ruin about 400. bucks of lipo's.Comment
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The ICE will charge the completely through the discharge leads safely. Then you can bleed balance them with the PQ balancer. You can also charge through it. I used that setup for 6 months with no problems. Ya shoulda just asked me in the first place silly.Comment
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Thanks man. I actually started this thread back when I just got it from ya. I cant wait to use it. I also kinda wanted to keep this thread going so instead of 20 lipo threads maybe we can just keep coming back to this one.:DComment
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Hey guys Im again in a pickle here. My 4S pack voltage reads 15.2V but the balancer says one cell is at its lowest voltage. this stuff is flight power all brand new. never charged yet or discharged. IF thats the case then 3cells are at their max at 4.1 and hopefully the low one is still 3V. WHAT DO I DO?? do I charge and hope balancer keeps cells from over charging? or discharge with balancer and hope one cell stays above 2.7 or 3V? PLEASE help me.Comment
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EDIT> It WAS infact user error. I was using 5S lead. That why it was stating one dead cell and gauge was reading all actuall cells were ok.Last edited by Mich. Maniac; 01-19-2008, 12:10 AM.Comment
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