A123 charger for 11S 2P pack
07-22-2008, 04:45 PM
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RE: A123 charger for 11S 2P pack
Hi,
I am not actually using the A123's (nothing wrong with them) I do use an older Shulze charger, the 636+.
With the new eprom it will charge up to 15 A123's in series. I would think Thunderpower, Hyperion etc
would offer similar chargers.
Hope this helps
Chris
I am not actually using the A123's (nothing wrong with them) I do use an older Shulze charger, the 636+.
With the new eprom it will charge up to 15 A123's in series. I would think Thunderpower, Hyperion etc
would offer similar chargers.
Hope this helps
Chris
07-23-2008, 01:11 AM
#3
RE: A123 charger for 11S 2P pack
I don't use A123.
My Mega Power 960SR charger works for LiPo, LiFe, Pb, NiCd and NimH batteries. It is 180W, charge up to 12S LiPo. You may find it in Hobby City.
My Mega Power 960SR charger works for LiPo, LiFe, Pb, NiCd and NimH batteries. It is 180W, charge up to 12S LiPo. You may find it in Hobby City.
08-04-2008, 05:29 AM
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RE: A123 charger for 11S 2P pack
Hi.
I charge 11s2p A123 packs using a HY 5020E CC/CV switching power supply. I use this either directly from the net, or from a Honda 1000W generator at the field.
This power supply is manually adjustable from 0-50V, 0-20A.
From the net, I charge at 20A, but due to the low efficiency of the power supply, my Honda generator can only manage 16A.
Balancing is done through a Schulze LiPoProfiBal 14 balancer. (Up to 14s)
After a "normal" P09 flight it takes 12 minutes to re-charge at 20A, and 15 minutes at 16A.
The "charger" (power supply) will automatically ramp down the charge current when you reach the pre-set voltage (40,2V for 11s A123)
The CV phase of the charge process is significantly shorter for A123 than for Li-pos, typically between one and two minutes.
Regards,
Magne
I charge 11s2p A123 packs using a HY 5020E CC/CV switching power supply. I use this either directly from the net, or from a Honda 1000W generator at the field.
This power supply is manually adjustable from 0-50V, 0-20A.
From the net, I charge at 20A, but due to the low efficiency of the power supply, my Honda generator can only manage 16A.
Balancing is done through a Schulze LiPoProfiBal 14 balancer. (Up to 14s)
After a "normal" P09 flight it takes 12 minutes to re-charge at 20A, and 15 minutes at 16A.
The "charger" (power supply) will automatically ramp down the charge current when you reach the pre-set voltage (40,2V for 11s A123)
The CV phase of the charge process is significantly shorter for A123 than for Li-pos, typically between one and two minutes.
Regards,
Magne
08-04-2008, 12:48 PM
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RE: A123 charger for 11S 2P pack
Thanks guys, I have a Xtrema charger that will do 10 cells, when I did my first packs they were 2P 10S A123 but I think I am going to have to go to the 2P 11S. (may be updated some day to more cells??) The Mega 960SR 12S charger looks like the way to go for me now.
Magne. What gauge wire and type of connectors are you using?
Magne. What gauge wire and type of connectors are you using?
08-05-2008, 04:00 AM
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RE: A123 charger for 11S 2P pack
Magne. What gauge wire and type of connectors are you using?
For power leads I use 4sqmm wire (AWG 11 or 12)
For charging the wires can be thinner, I use 2.5 sqmm, which is equivalent to ASW 13. ASW 14 would probably also be fine for charging at 20A.
For balancing, the Schulze balancer requires either a 10 pin or a 20 pin connector, depending on the number of cells in the battery pack. These are sold by Schulze retailers.
Regards,
Magne
