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for the NiMh we use in our helis (which fail after 50-100cycles) have 3,3Ah - 4,2Ah, a single cell weights 62g - 66g and a single cell costs 8Euro - 10Euro so, why do they only hold for 50-100cycles.. because we stress the cells A LOT in our models.. (in the most hard case (hotliners)...

you got me wrong.. i meant, it should be possible to build an Balancer for 12s FePO4 for less than 100 Euro look here: thats a balancer i use.. it costs 35 Euro and can equalize a maximum of 6cells you can buy a second one, connect them via data-cable so you can balance/Equalize 12...

yes.. total agreemend following: people who pay max. 400 Euro for a normal bike will not pay 2000-3000Euro for a e-bike people who pay 1500Euro+ for a normal bike, WOULD pay 2000-3000Euro for a e-bike if there was the power and fun-factor.. problem there: limitation of power by law (which...

ups.. double post

i understand your point of view... some way well.. than they have not tested good cells.. i know: its a BIG cost-factor.. good LiPo cells, pre-assambled with 36V and 10Ah WILL cost lot of money (count with around 800Euro+) but these cells will be able to delive also about 5-8times the Power...

so.. last posting for next time (otherwise i think somebody would kick me out of the forum ;) ) a charge-diagramm to "shock" you again, to show HOW durable this cells are ! 3 cells A123 with 2,3Ah fast-charged ! charge-current: starting with 78A !! going down to around 35-30A battery full...

@flecc: FePO4 fact sheet from manufactor: http://www.a123systems.com/html/products/ANR26650M1%20Datasheet.pdf (at typically e-bike-currents you see: after 1000cycles there should be over 90% capacity left !) compare to this: 50cycles Electric Bicycle - What you really need to know about Lithium...

@flecc: my NiMh last for 4-6min in the heli (then they are empty) its a stress for the batts.. when used cold (20°C) they have no power (20-30% less "juice" and pressure) so: i charge my 3300mAh NiMh with 8A charge-current that brings the cells to around 50°C and so they get power...

for storing lipos/LiIons for longer time you should always keep this in mind: Permanent capacity loss of lithium-ion as a function of temperature and charge level. High charge levels and elevated temperatures hasten permanent capacity loss. Improvements in chemistry have increased the storage...

hehe don´t miss also this: two german guys put two jet-cat rc-plane-turbine on the tail of a bike ! AND drive it in public traffic ! Jet Turbine Powered Bike - Google Video and another video: jet bike - Google Video guys put a PULSA (pulsjet) on a small bike ! result is not that...

depends on class ;) look here: : : Electric Moto Corporation - Blade Specifications : : it was used also for racing with some some good results ! (its lighter than a IC and for that handles very good.. also good acceleration because no gear-switching is needed) of course: after 15min...

hmm.. i see... your LiIon seem realy to be bad quality ! only 32Volt at 20A for a 10Ah battery ? brr... i shiver 2 questions: * how much does such a 10Ah 36Volt LiIon cost ? * how much does it weight ? look here: http://www.elektromodellflug.de/akku-test/bilder/Konionxxxx.GIF thats a Konion...

video: http://www.electricross.com/Video/SP%20Eric%20Swan%2065%20foot%20table%20320x240.avi nice 65feet jump with e-bike for Nimh and Lipo.. what you said, is because of that 1C-2C thing ! with nowadays lipos its other way round ! we used very high quality NiMh cells in our rc-planes...

oh.. the next step: Electric Moto Corporation - great picture with details 18hp ! http://www.electricross.com/ and this: 14.400Watt = 19hp : : Electric Moto Corporation - Blade Specifications : : the bike weights only 36kg ! the battery (LiIOn FePo4) weights only 13kg so: maybe 2 times the...

hi.. (please excuse my bad english, iam German speaking (from Austria)) hmm.. maybe there are more than one reasons: first i should introduce, what C-rating is to understand my following post better: C-rating does say, how much current you can draw out of a battery.. example: a battery with...

Hello... my first post here, very interesting forum ! i have read 1 page early the concerns about LiIon, the Danger, burned houses, ... and want to say some thing about that.. iam using LiPos (Kokam, Thunderpower, Tanic, Polyquest, Xcell, ...) for some years now in RC-planes, RC-cars and...