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Old Jun 08, 2011, 12:57 PM
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RELAX. You'll live longer
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Brisbane- Australia
Joined Jul 2007
3,741 Posts
Please be careful using rechargeable batteries, with these systems.
They are designed to run on 12V (8 x 1.5V cells) for the Tx & 6V (4 x 1.5V cells) for the Rx.
Rechargeable 1.2V cells will only give you 9.6V at the Tx & 4.8V at the Rx.
As stated in the manual the Tx gives a low voltage warning at 9.5V & I know that a lot of 2.4 gig receivers can lose signal if the voltage drops below 4.5V under load. I've seen it happen with some of our scale guys in the club. Even with Spectrum systems. They have also lost binding because of low voltage. When they changed to 1.5V duracells the problems went away.
If you are going to use rechargeable cells use at least the 2500mah size. That's what I use & it keeps the voltage up over the drop out limit for a lot longer.
If you are going to use rechargeable cells for the Rx, it's best to make up a 5 cell pack to give you 6V
As I always use the BEC in the ESC's that I use for racing I know that the RX is always getting 5V.
I only mention all this to try & help avoid a dead boat or a runaway boat. Seen them both happen.
I'm not saying that all systems suffer from this problem but some will.
Cheers.
Paul.
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