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elios

join:2005-11-15
Springfield, MO
reply to lutful

Re: PSU's and DC-DC convters or Is There An EE In The House!?

the check the cell chemistry on the fast charge cars there not Lipo they are using Li-Fe/A123 which you CAN charge an insane rates

we use Li-Fe for things like TX, RX and ignition packs
the trade off is Li-Fe weighs more and has lower per cell voltage
not ideal for flight packs

there just isnt a need for that kind of a charger
when with a 40amp charger you can do 6 packs at once
even bird that needs 2 at time thats 3 flight
12 packs and you can fly back to back all day long

and with the Powerlab you can link up to 16 of them lol to run of the setting of 1 IF you REALLY need that much

your avg RC guy rarely needs more then a 20amp to 30 amp charger
and the guys wanting setups like me are few and at the top end of the hobby

lutful
... of ideas
Premium
join:2005-06-16
Ottawa, ON
kudos:1
said by elios:

check the cell chemistry on the fast charge cars there not Lipo they are using Li-Fe/A123 which you CAN charge an insane rates

Many production hybrid cars have been switching over to lithium polymer since Hyundai did it back in 2008:
»green.autoblog.com/2008/07/09/hy···battery/
The Elantra LPI HEV will be the first car in the world to use lithium polymer rechargeable batteries ... significant advantages over lithium–ion batteries including higher energy density, lower manufacturing costs, being more robust to physical damage and they can also take more charge–discharge cycles ...

said by elios:

... with the Powerlab you can link up to 16 of them lol to run of the setting of 1 IF you REALLY need that much

Powerlab appears to be the end of innovation for RC folks.

Anyway, your original problem is solved by a multi-phase DC-DC boost converter: more phases = more current @ constant voltage.


elios

join:2005-11-15
Springfield, MO
it pretty much is untill we get a new battery type any way


elios

join:2005-11-15
Springfield, MO

1 recommendation

reply to lutful
got my stuff in and setup
PSU is putting out 25.5v so should be good to go
only tested up to 30amps on the charger so far but looks good