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Quote: Originally Posted by samd |
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I suppose that's my real question: What's the reason a person can't use a DMM with a load to ascertain where they are "on the curve"? In looking around on the FG site and seeing some of the discharge curves people have posted, it doesn't appear to me that A123 cells have a perfectly flat discharge curve with an immediate drop (knee). Oddly, a number of the curves weren't so unlike the curves I've seen on Nicad or NmHd packs in good condition (I have a CBA so I've done a decent amount of testing).
No doubt about knowing how many flights in one day you've flown. Unfortunately, there's often some monkeying around with everything turned on that gets forgotten- engine tuning, range checking- anything- Thus my concern about the notion that there's no way to get a quantitative "feel" for what's going on with the batteries.
I'm all for technology- I just want to know what I'm getting into. That said, I really like the idea of doing away with regulators and other possible failure points associated with Lipos (along with the extra weight of this stuff). |
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ya know this statement right here was the very same thing i said about the nickel metal batteries when they first came out. this was there selling point, they kept there charge until bamm it was gone. and i did get to see it first hand. everything works just fine all the way until they quit. its no different with these but take the dewalt drill. it dosent just stop, it slows down until it stops. it dosent just stop going from full slap your hand busting concrete then nothing
and neither will your plane it will start to feel slugish, but man you will know it before they just stop. but it wont be that way for the 2.4 stuff cause the receiver will go into lockout first. or reboot or what ever you want to call it. these A123 batteries are good stuff. dont let the graphs scare you. fly 3 or 4 flights then charge
it only takes 15 minutes to full charge and NO other battery on the market will do this
..... not 1 for this reason alone is worth the change, not to mention the (no regulators) or the more power. you dont have to balance charge everytime, much like the lipos. but the cellpro charger does not give you the option. get the adapter for the charger you are using now, it will work just fine until you deem the balancer is needed. and or have the funds to get it..
