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15/08/2010
Scott (100%)
how would i mount these cells if i wanted to make a 6.6v pack, how many cells and what would be the capacity of the pack.
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SBAlv
(43%)
C'mon Scott... It is not rocket science! Each cell is 3.3V so you will need two cell in series to get 6.6V. The capacity of the cell is 1100 mAh and that will be exactly the capacity of your pack.
1S1P - 3.3V / 1.1Ah (single cell)
2S1P - 6.6V / 1.1Ah (two 1S1P in series)
1S2P - 3.3V / 2.2Ah (two 1S1P in parallel)
2S2P - 6.6V / 2.2Ah (two 2S1P in parallel)
... and so on...
Got it?
Cheers!
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22/07/2010
Ercofi (47%)
May I use two cel LiFe in the DLE111 ignition???
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Gabriel
(71%)
Yes, you can. But you should not. Prolonged use can cause burning. Keep what is simple, simple. 4 cell NIMH or NICD and you do not need voltage regulator or anything else between your ignition and energy source. That's what I do.
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6/02/2010
TIXIER (56%)
Do you know diameter and lenght for those cells?
Best regards
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nowinkk
(82%)
18650 = 18mm diameter x 65mm long
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21/11/2009
nowinkk (82%)
I wonder if it can be used for servos of spec 4.8/6.0v by having 2 cells in series to form 6.6v. Will the servos burn out?
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Sumer
(65%)
I am using 2S packs with a series diode without any problems with Assan receivers and various servos.
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Gabriel
(71%)
If the specification is 6v, there will be no problem. A LIFE 2S battery fully charged voltage is not higher than a pack of 5 cell NIMH or NICD. No need for diode or regulator.
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8/08/2009
saltbush (50%)
Capacity? I built a 3S1P pack from these but have measured the total capacity as 1050mAh - fully discharged then charged using LiFe settings on Swollow charger - then discharged useable current on the plane connected to Wattsup meter - again 1050mAh. Could the discrepancy in capacity be caused by my pack buld? Or did I get duds? Has anyone had a similar experience? I hope it's a one-off, as I've already ordered more cells!
Thanks - Bruce (Australia)
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Geir
(60%)
If you mount cells in series, you will get higher voltage (9,9 v) but same mAh(1050). Mount in paralell and you get 3,3 voltage and 3150 mAh.
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1/08/2009
Norbyjon (58%)
Question for hobbycity team.
I used to buy on your web store. Good products, good packaging, good delay.
But for these A123 Systems 18650 LiFePo4 Cell, I am surprised to see them at US$6.95 on a famous Japan web store !
Do you think you'll be able to be the best on price as usually ?
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8/07/2009
Richard_s (68%)
Do this cells in pack need to be balance-charged like LiPol? I've been told that Li-Ions dont have to...
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Norbyjon
(58%)
It is not Li-Ion but LiFe. And yes, they need to be balanced, even if it is less critical compare to LiPo.
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Demon315
(72%)
If to charge a small current 0.1-0.2 then balancing it is not necessary. If to do fast charging by the big current and not to use battery balancing fast will lose the capacity. If too the big current with balancing will charge losses of capacity but not such big as without balancing. The capacity can be restored discharging and charging batteries a small current 0.1-0.2A.
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Demon315
(72%)
I have refused balancing in LiFePO4 from for that that the wire in the balancing plug has not so reliable isolation which is easy for damaging putting or taking out the battery from model. Considering the big current of bit to 65 for these batteries, deformation and the subsequent closure of wires of the balancing plug can lead to failure of all electrochain and possible ignition. I charge the pack a small current at which balancing is not necessary.
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Tadeusz
(43%)
I have a battery assembled with this cells and I do not use balancer. It works about 1 year and nothing wrong happened.
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7/06/2009
jtfdez (34%)
It is possible to use this battery in a Futaba 9Cup Tx? Wich should be the configuration?
Thanks.
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28/04/2009
rhowdy (62%)
I got the cells last fall. But not sure on the date of manufacture. I have four more that I will build another pack with and these were received this year.
Under load the voltage would drop quickly and the esc would cut off the motor. My voltage cutoff was set at 9volts and the pack was recognized as a 3SLipo which I understand is what you want. Someone suggested lowering the Cutoff voltage to 8volts. I would have to make the ESC dedicated to LiFe and would like not to do that.
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leiff
(75%)
You can not use Lipo setting in your ESC, it will as you say cut off. Set ESC to nim and high cut off and fly by timing your flight
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21/04/2009
Pithan (74%)
I want to know if you got an idea of the date of arriving of these Cells?
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rhowdy (62%)
I used my 4s LiFe pack this week end and it appeared to not be fully charged. The charger does OK with my LiPo packs but I am not sure where the diffculty is (battery or charger) with the LiFe pack.
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rhowdy (62%)
I am using an Accuel 6 charger. what is the bestsettings for a 4S pack with a balancing plug. The charger manual is not very clear on this. I used the settings from the product information above.
Charge was set at 1.5Amps to 3.6 volts with chk time of 45 minutes. I am not very sure what the check time is for. Is that for a totally discharged pack?
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rhowdy (62%)
What would be the best esc to use and how would you set it up?. I read a previous response that suggested using a NIMH setting to get the proper voltage sensing and cutoff.
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rhowdy (62%)
I would like to incorporate a balance plug. Are there any instructional papers on how to wire this.
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Sam
(80%)
It varies depending on what kind of balance plug you want to use, but here is a basic tutorial
media dot hyperion dot hk /dn/a123/packassy/A123packassy.pdf
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leiff
(75%)
why bother with ballacing? I have used these batteries in a 3cell conf. and 4 cell for a year (30-40) charges and see no reason to ballance
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Sam
(80%)
Balancing isn't absolutely necessary with these (compared to Lipo), make sure theyre at the same charge level at assembly though.
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rhowdy (62%)
I just purchased four of these. I will solder these into a pack. Can anybody give me an idea what voltage I can expect with an average draw of 10 amps? What is the best ESC to use, prop?
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Sam
(80%)
probabaly about 11.5v looking at ***********battlepack****/APR18650M1_2007-05.pdf
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Sam
(80%)
www dot battlepack dot com/APR18650M1_2007-05.pdf
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Flaviosi (50%)
How do I use Turnigy charger on them?
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bothal3
(98%)
It seems as if you can select the NiMH type and charge away.
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Flaviosi (50%)
Hi! Is t possible to charge it with Turnigy? How? Thx!
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Coyo
(56%)
Turnigy Accucell 6 have menu to charge A123 cell, just select LiFe.
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florenzo (72%)
comment regler le variateur pour la tension de coupure ?? merci d'avance
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RiMr71 (68%)
Hello, can I increase cappacity by paralel connection of more A123 cels (same as with lipo accu)?
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Raffael
(85%)
Of course!
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Coyo
(56%)
is it necessary to add balance connector?
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nowinkk
(82%)
Absolutely if you wish to balance or individually charge them.
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leiff
(75%)
for 3years so far I have not bothered with ballancing tabs
in 6 paks, 3-5 cells, booth the 1100 and the 23oo ma cells
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Sam (80%)
18m diamether, 26mm long, give or take about a mm
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Sam
(80%)
18mm sorry
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huflyer
(80%)
18650 size by definition equals to 18mm diameter by ~65mm lenght (not 28mm long...)
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Sam
(80%)
Wow I don't know how I managed to write that and not fix it... yeah 65mm long.. sorry heh
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slumberjer (88%)
Can this lipo being used on EP 450 heli such as TREX SE? How?
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bothal3
(98%)
Seems like you have to connect at least 3 cells in series to form a 9,9 V 1 100 mAh pack.
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Virgis21 (64%)
Please give us dimensions. Thanks
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Scott
(76%)
18650 is the part # this means
18mm Diameter and 65mm long.
Cheers
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quannum (71%)
please, inform size (L*W*H). Thanks.
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Scott
(76%)
18650 is the part # this means
18mm Diameter and 65mm long.
Cheers
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PAM (90%)
Alberto, read the first line *-)
"Nominal Capacity & Voltage: 1.1Ah, 3.3v"
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Alberto (80%)
How many MAH? I don't believe it's 18650
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Mrkaza (72%)
I want to know if it is save to have an 2s pack of this to an xyz ignition .Thanks in advance
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