reciever battery...

Anybody have a 4.8v 1000mah receiver pack battery for sale pleeeeease???   

For reference you want a 6v if using spectrum 4.8 ok but if the pack is low you can get problems.

Mark Barnes wrote:For reference you want a 6v if using spectrum 4.8 ok but if the pack is low you can get problems.

Never heard that before, but if that's what it takes then that's what you want.

Make sure the pack is kept charged

Personally I would recommend 5 cells (Nimh Andy. Not lipo!! ie 6 volts rather than 4.8.) for all 2.4 GHz gear. One of the drawbacks of 2.4 generally is that the microcontrollers in them are is much less forgiving of brown out than 35 MHz. Having said that, small light models such as gliders that have a low current demand are fine on 4 cells

So do Spektrum supply 5 cells batteries with their radio packages now or do they leave a little post it note in the case recommending you should not use 4 cell.

I know Futaba don't and I run a 4 cell pack in my Sbach running digital servos.

Spektrum lives in a strange world neither here nor there.

I think when I got both my DX7 & DX8 package they came with 4 cell packs but couldn't swear on it

Its just that, personally, I much prefer something in reserve so put 5 cell in anything with more than a few servos. I also happily fly all year round and sometimes the temperature is below freezing which doesn't help battery pack voltage under load

I prefer to guard against 'that moment' when your servos are heavily loaded, you've had a few flights, the air temperature is low, the switch contacts are a bit dirty and the ground a bit close...

Just to make it horribly murky, digging out a brand new Speccie rx (AR610 which is a full range rx but probably more suited to mid range models) in the specifications it states voltage input range 3.5 - 9.6 volts

Afaik I've never had a brown out in flight (grab handfulls of wood rapidly!)

I use lipo so not really arsed, was just advising

For the extra couple of quid why would you not put 6v in?

Like I said Spektrum neither here nor there.

Wasn't it the first Spektrum receivers that had a long reboot time when voltage got close to the limit (brown out) never heard of that in radio control terms until Spektrum came a long.

The money wasn't mentioned.

I was concerned for those using the inferior Spektrum receivers in case the flight couldn't be made safely using a 4 cell pack.

Some of the older servos didn't like 6v

12V lead acid is the future Spektrum invented the "brown out" to test the strength of the users underwear hence the name   

As the leaders in the new technology they were also the first to find the problems... Still, not as bad as Futaba's lethality!

But, yes, the difference in price makes it a no contest. And just because I've never had a brown out doesn't mean I don't need to use 5 cells

Lol! I sometimes use recyled lead in my models and acid in the mouth when this lead dents the ground...