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Old 09-23-2008, 05:50 PM   #1
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Default need help how to charge lipo battery

i have a 2200mah 3s 25c brand new. i dont know what rate to charge.is there any one knows a link for a lipo chart like what rate should i charge?

i have a balance charger that bought from ebay
http://cgi.ebay.com/ws/eBayISAPI.dll...m=250295685100

thanks
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Old 09-23-2008, 06:07 PM   #2
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If it's 2200mAh , then charge at 2.2Amps...... it's quite simple.... Always go with 1C charge for Lipo
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Old 09-23-2008, 06:07 PM   #3
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2.2Amps
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Old 09-24-2008, 01:49 AM   #4
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is that means if i have 4200mah i will go 4.2amps?is that how?
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Old 09-24-2008, 02:07 AM   #5
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Yes, dude. 4200mah charged at 4.2A which is 1C.
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Old 09-27-2008, 01:17 AM   #6
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how do you know how long it will take to fully charger?what is the formula. like lipo bat
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Old 09-27-2008, 01:37 AM   #7
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1hr if your battery is balanced.
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Old 09-27-2008, 01:45 AM   #8
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how about discharge rate
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Old 09-27-2008, 02:38 AM   #9
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Originally Posted by -KilleR- View Post
1hr if your battery is balanced.
No not really not with lipo because of the voltage requirments
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Old 09-27-2008, 06:47 AM   #10
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how about discharge rate
from what i understand, DON'T discharge it... once the volts get too low they may be ruined... that's why lipo cut off circuitry is a big deal in an ESC these days...
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Old 09-27-2008, 07:30 AM   #11
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how about discharge rate
Do not discharge. Just recharge and go!!
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Old 09-27-2008, 05:24 PM   #12
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ok,thanks
how about the AA nimh 2500mah for my radio, what is the charge rate and discharge rate? thanks guys for the reply
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Old 09-27-2008, 06:07 PM   #13
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ok,thanks
how about the AA nimh 2500mah for my radio, what is the charge rate and discharge rate? thanks guys for the reply
This one is a touch tricky but, 1A is safe charge rate for these. I charge slow to train them to give their charge slow.IF you charge fast I think you will be charging more often.

As for discharge, I wouldn't bother. Charge rate it low, match maintenance not really relevant, and by the time memory becomes relevant it will be time to get new batts or a new radio.
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Old 09-27-2008, 06:25 PM   #14
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Lipo is not disch like NiMH and you need to have and use a low voltage cutoff (usually built into esc and may be adjustable). Some of teh newer lipos can safely charge at 2C, but the batt lable wil clearly say so, otherwise as others have pointed out, charge at 1C.

AAs - do not charge them at 1C, slow charge at 0.5a or fast charge at 1a. You'll get better life from them (more cycles) if you'll try to slow charge. Rx or Tx batts need to supply a small amt of current for a long time, they don't need punch like a main batt in a electric does. Slow charging helps condition them to do just this. If mine need discharging, I use 0.5a. I find they seem to work a little better if I discharge them every 3rd of 4th time I charge them.

Digicam guys have AAs down to a science, special chargers, breakin - forming charges and cycling. I bought a high end AA charger by Powerex to play with and it keeps mine in top shape. Still $100 for an AA charger is hard to justify - but I use them in my digicam too, not just rcs.
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Old 09-27-2008, 08:51 PM   #15
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Originally Posted by Duster_360 View Post
Lipo is not disch like NiMH and you need to have and use a low voltage cutoff (usually built into esc and may be adjustable). Some of teh newer lipos can safely charge at 2C, but the batt lable wil clearly say so, otherwise as others have pointed out, charge at 1C.

AAs - do not charge them at 1C, slow charge at 0.5a or fast charge at 1a. You'll get better life from them (more cycles) if you'll try to slow charge. Rx or Tx batts need to supply a small amt of current for a long time, they don't need punch like a main batt in a electric does. Slow charging helps condition them to do just this. If mine need discharging, I use 0.5a. I find they seem to work a little better if I discharge them every 3rd of 4th time I charge them.

Digicam guys have AAs down to a science, special chargers, breakin - forming charges and cycling. I bought a high end AA charger by Powerex to play with and it keeps mine in top shape. Still $100 for an AA charger is hard to justify - but I use them in my digicam too, not just rcs.
what rate of volt it would be?
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