Guys, I appreciate the recommendations from my past customers. We have actually just recently stopped selling the A123's, just due to the production time required. We are shifting our efforts to the growing evoJet engine sales and support. I too recommend Electro Dynamics for your future A123 needs. In fact I just sent them my NASA account....it took me a few minutes to build up the strength to send that account away

We are still offering all of our other products and equipment!

Regardless who you buy your A123's from, I'm always available for questions. If your not using A123's, you're missing out. Safer, more reliable, no regulator need, longer lasting....there is no downside.

Chad

Whats the down side to lithium IONs, before A123s everyone said the same thing about IONs

i use lithium ion in all my jets for receiver and ecu with a few planes having lipos on the ecu that i can get to easy for charging outside the plane,i guess the new down side to ions is the regulators and the fact that you can't hard charge them at the field but then again i have never had to charge a ion in good condition getting 5-6 flights with two 2600 mah packs on the receiver,i do like the a123 batteries just have heard and seen a few guys have trouble burning up servos with them when freshly charge

If you are using Lithium ions for the ECU, they will not start most turbines equiped with kero start.

Keep in mind, I'm not saying they are bad, I'm simply saying A123's are better.

Li-Ion's require a regulator (another piece of equipment to possible fail), are still a fire hazard (although not half as bad as lipoly's), and only last about 200-300 cycles (if they are high quality).

I kind of chuckle when people say A123's burn up servos.....the MAX voltage of an A123 FRESH off the charge is 7.2, a 5 cell nimh pack - 7. People have used older servos designed for 4.8 and burned them up....some have even used older servos designed for a 5 cell nimh and burned them up, but I can tell you that I have used A123's with the factory recommended servos in a Bandit ARF (and there are some small ones in there) and I never had so much as a glitch. Use new equipment and you won't have a problem. Anyone that I have ever heard of losing a servo to an A123 was using a servo 4-7 years old. Within a minute of being turned on, they settle down to 6.6 volts where they remain for the majority of their ~2000 Mah life.

And yes, Li-ions have a hard time putting out the power required for some Kero start turbines, mostly the turbines using a 6 volt system (Jet Cat, Jet Centralm, etc,) The lower the voltage, the higher the amp draw.

Chad

Been planning a change sounds like the time is right! Thanks guys!

yeah I would never use them on ECU, Only reason I have not changed over is the fact I cannot buy a switch like im adding to my jet that will show voltage of A123s. I just like being able to put a load on my batteries and check between flights.

Regarding the issue of charging both batteries at the same time, if you use two separate chargers to charge them at the same time does that eliminate the problem????????

I have two electrodynamic 123s coming in for my jet , I think because of not having to use regulator outweighs being able to load test , also you can top them off in 10 minutes at the field if you want to . just keep up with milliamps used Been using life batteries for a while and love them , don't think ill go back to ions ,although I'm using them in my 35% yak , when I change over ill get rid of the smartly also . MHO

hey billy I think i am going to keep that other turbine and find a nice used viper jet

Hey , KC has a modelbau tornado new in box with extras for sale with turbine

my turbine is to big for that jet, what is he asking for it? hey dude check out this switch i am going to use. you would like it as well it keeps track of mahs used so its perfect for A123s! I am thinking about converting to them now

I'll check on the price , forgot about your supereagle . The link didn't come up on the switch . I would like to see it. Thanks

I am at work I will post it when I get home tonight, flying gunner live fire.

Cool, love to be in your shoes flying an AH64 Apache longbow, I'm stuck here working on a blackhawk oh well . Later

Here is that switch link
http://www.boomarc.com/products/162-...lliswitch.aspx