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Home✈️Aircraft🚁Helicoptere-AlignOther › tp2100 mah charging time?
01-29-2007 12:44 AM  12 years ago
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TrEx45sE

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Flushing,ny

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tp2100 mah charging time?
Is this normal? I'm charging my tp 2100 mah 11.1v on cell pro for more than 4 hrs!!! doing the fast charge mode???? It doesn't sound like a fast charge to me.....
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01-29-2007 12:47 AM  12 years ago
geoffrey

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Delft

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what charger are u using
i a m using a triton and usually charge around 1.6 amps for about 60 mins
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01-29-2007 12:52 AM  12 years ago
swattley

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West Milford NJ

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that does not sound right at all, what is your charge rate
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01-29-2007 01:07 AM  12 years ago
TomRex

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1c is the same as 2.1a for a 2100 or 1.8a for a 1800 and so on and so onIgnorance is the absence of facts.Stupid is lacking the intellectual capacity to comprehend the fact
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01-29-2007 01:15 AM  12 years ago
TrEx45sE

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Using a cell pro charger. I'm putting it in a fast charge mode. but its 4 hours of charging
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01-29-2007 01:25 AM  12 years ago
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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If you press the mode button a couple times you'll see the charge rate etc - Until we have more info we can't much begin to guess what's happening.
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01-29-2007 04:58 AM  12 years ago
dkshema

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Cedar Rapids, IA

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If you're charging a standard LiPo at greater than a 1C rate, get ready for the fire and explosion you're bound to have. There's a reason that all LiPo manufacturers and distributors recommend charging at no more than the 1C rate. Your LiPos will swell, get hot, and you get a chance to call 911 and watch the fire department do their job first hand.

Charge your 2100 mah LiPo at 2.1 amps or less. At 2.1 amps, expect it to take about an hour and change to charge the pack fully. If your charger is taking 4 hours, it's not doing it's job. Is that charger rated for LiPos? If it's not designed to charge LiPos, then don't use it, or at least get real friendly with the local fire department.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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01-29-2007 05:00 AM  12 years ago
rcadd1ct

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Richardson, Texas

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Unless you have the new TP charger and balancer combo.

I am charging at 3C without issues.

You have to have the correct packs, too.
-RCA .......... Making Cuisinarts Fly!!!!!!!
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01-29-2007 05:18 AM  12 years ago
noahb

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Carlasbad, NM

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If you read TP instructions that came with the TP packs, they tell you that you can charge I think at 2C. But that is with there charger.

The Cellpro charger is one of the best on the market for 4S or less packs.
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01-29-2007 10:19 AM  12 years ago
electricdurango

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Sterling, VA

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I only take about 75-80% out of the batt. I charge with a TP1010-210combo and it only seems to take around 30-40 mins at 2.1A So I had rather not charge 2, 3C etc. I dont think its worth it.
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01-29-2007 12:10 PM  12 years ago
robl45

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Deerfield Beach, FL

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hyperion says you can charge their batteries at 2C regardless of using a balancer. As long as you run a balancer and a charger, you can charge at 2C. TP's data cable is not magic, no different than any other balancer/charger combo. balancer that lets you charge straight through it is safer than the TP. Anyway, I guess people will always be stuck with the don't charge over 1C mentality so I won't try to change that. However, I charge at 2C and the packs are cool to the touch.
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01-29-2007 02:18 PM  12 years ago
flyingfitz

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Edwardsville, IL - USA

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electricdurango

ThunderPower says that certain prolite batteries are good to 3c if you use the data link balancer and charger combination. I have verified this with TP before doing it.

I have tried various charge rates on the Prolite 2100 up to 6 amps and found that 5 amps works great. The charge time is around 21 minutes give or take and the battery is cool after charging.

I have three Prolite 2100 packs and the 20 minute charge really makes a difference for a day of flying compared to 1c charge time of 1 hour or so.

Fitz
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01-29-2007 06:51 PM  12 years ago
SSN Pru

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Taxachusetts

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If you're charging a standard LiPo at greater than a 1C rate, get ready for the fire and explosion you're bound to have. There's a reason that all LiPo manufacturers and distributors recommend charging at no more than the 1C rate. Your LiPos will swell, get hot, and you get a chance to call 911 and watch the fire department do their job first hand
you are misinformed. representatives from TP have told us on these very boards that 3C is acceptable with the TP balancer and charger. i dont have a charger capable of charging at greater than 1.5C but i do charge at 1.5C with no issues. the balancer hardly blinks. many many people on these boards field charge thier batteries at 3c using a balancer and have never had an issue. it is most definitely not recommended to do so without a balancer.
If your charger is taking 4 hours, it's not doing it's job. Is that charger rated for LiPos? If it's not designed to charge LiPos, then don't use it, or at least get real friendly with the local fire department.
the cellpro charger is indeed rated for lipos. it sounds to me like your charging rate is .25C instead of 1C...

pru
Stupidity can be cured. Ignorance is for life!
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01-29-2007 06:58 PM  12 years ago
dkshema

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Cedar Rapids, IA

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Thanks for the update on greater than 1C charging, but this fellow isn't using the chargers or balancers you all have been referring to....-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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01-29-2007 07:04 PM  12 years ago
robl45

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Deerfield Beach, FL

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actually the cellpro is a balancing charger I belive. I have the balancepro 6s and it is a balancer and charger in one.
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01-29-2007 07:04 PM  12 years ago
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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The Cell Pro 4S charger is a quite sophisticated Balance Charger that is capable of charging individual cells rather than just charging all the cells at once and bleeding the excess from the faster charging cells like the TP etc chargers/balancers do - It's actually a safer method that never over-charges cells where the others do over-charge cells and just bleed off the excess.
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01-29-2007 07:21 PM  12 years ago
TrexRookie

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San Francisco, CA

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umdpru
Thunder Power told you that you can charge over 1C? That's odd... their safety sheet indicates that you should NOT charge over 1C.... here's the link...

http://www.thunderpower-batteries.c...etyWarnings.pdf
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01-29-2007 08:07 PM  12 years ago
SSN Pru

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Taxachusetts

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Thanks for the update on greater than 1C charging, but this fellow isn't using the chargers or balancers you all have been referring to....
it is not entirely nessecary to use a balancer when charging at 1/4C.
this person is taking 4 hours to charge a pack so doing some simple math means that his charge rate is 1/4C.
Thunder Power told you that you can charge over 1C? That's odd... their safety sheet indicates that you should NOT charge over 1C.... here's the link...
i never claimed to have been personally told that. it was contained a thread about fast charging many many many months ago. ofcourse they woudl have to put that in thier safety sheet for liability reasons. if my memory serves me right, the representative said that thier batteries were CAPABLE of being charged at 3C with thier equipment. would it decrease the life expectancy of the pack? most assuredly! was it entirely safe? who knows. many many many people here charge thier packs at greater than 1C without issue, how can you refute that?

pru
Stupidity can be cured. Ignorance is for life!
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01-30-2007 12:54 AM  12 years ago
noahb

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Carlasbad, NM

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IF you look at the sheet that comes with the prolite batts it tells you that you can charge at 3C. It does state that you HAVE to use the TP1010C charger in conjunction with a TP Balancer.

however, for 4s or less... the cellpro is a much better balancer in my opinion then the TP one. It actually monitors and charges each cell. It does not charge all of them and then balance the cells.

The TP has a lot more going for it. I no longer use the auto charge feature of the Cell Pro charger. I don't care who makes the charger, I will set the rate. I charge my TP2100's at 3amps and it will charge them in about 40minutes. I have never had a problem and my packs are still going very strong. Even the litature that comes with the Cellpro says they have done extensive testing on there packs and have found out that you can safely charge at 1.4C (that is there packs).

If you are not sure, just set the charger to charge at 2amps for a 2100.
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01-30-2007 12:59 AM  12 years ago
Micro-Maniac

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Actually FMA (Cell Pro) determined that they could charge at up to 1.4C without noticeable degradation of the packs so they give both 1C and 1.4C as auto-charge options - You can charge faster manually but it degrades the health of the packs more quickly shortening their lifespan - 3A (cell pro rate limit) with a 2100 pack is right around 1.4C anyways -

With update equipment and knowledge charging above 1C is safely doable.
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