Transmitter LIPOS

[lordnikon]

After my batteries going flat yesterday and the annoying low voltage beep driving me up the wall, I'm considering lipos in the transmitter. At the moment i have a tray for 8xAA which i will rip out to make room for the lipos.

I'm assuming 11.1V 3S is the way forward but does anyone run these or have any experience ?? I would have to solder a new plug onto the transmitter either way so connections aren't an issue, just not sure if its worth the effort ??

[fidspeed]

i have converted 3 of my KO helios to lipo 3s now no apparent issues

there are some thoughts that it may overload the regulator and burn it out .I think this could be an isue with prolonged use but for 5 min racing i dont have any problems

long rallycross or bashing users may have problems in the old days i remember some people stuffing an extra cell up an ko mars for 9 cells which when fully charged gave easily the same voltage as a lipo

worse problems are when messing about witx Tx and forgetting to extend aerial and overheating RF module

regards dave

[bodgit]

I use these in my tx
http://www.ebay.co.uk/itm/TX-Pack-9-...item33677a6a42
They are very slow self discharging so can be left fully charge for ages and not drop too much
6 months About 80% of charge is held
12 months About 70% of charge is held (normal nimh would be empty

[Big G]

I use a 2300mah lipo in my tranny and no problems. a single charge lasts 16hrs. It tends to drop very quickly when you get to 10v though so avoid letting it get close to that as the alarm that previously went off at 9v doesn't anymore.

I'll usually recharge it when it drops into the 10.x volts

£20 delivered on ebay I think (It was sometime ago)

[super__dan]

[QUOTE=lordnikon;540193]I'm assuming 11.1V 3S is the way forward but does anyone run these or have any experience ?? I would have to solder a new plug onto the transmitter either way so connections aren't an issue, just not sure if its worth the effort ??[/QUOTE]

YES!!!!!

It's so much better, mine lasts months without a charge (3VCS) and the lighter weight helps with tranny hold. I couldn't recomend it enough.

I don't know this but they all seem to come with a fairly standard 2 plug which if you have a removable 8 cell slot pack will likely plug straight in. Note 8 * 1.5v Duracells start at 12V and a charged lipos is 12.6v but falls away a little almost straight away, personally this very small voltage increase has never been a problem on my handset.

For me, anyone that's not converted is missing out on much less hassle. when I do charge mine I do it through the tranny port at 1A.

[dmsykes]

I agree with what Dan said, Lipo is the way to go. I have converted my KO universe and put in a 2300mah Lipo from Demon products. The tray inners came out on problems & the lipo pack fits straight in. Charge lasts & lasts. I do however remove the pack for charging, which is done at 1 amp. One of the best things i've done.

[lordnikon]

Cheers for the info chaps, I am pretty sure the battery tray is moulded into my tx but I'll hack it out and get it wired up ready.

Thanks again

[mark christopher]

what make tx s it? some sanwa only run on 6 "aa" cells so a 3 s is too much

[Big G]

3s clock up 12.6v when fully charged which as alarming as it is the 1st time you see it the tranny never complains

[lordnikon]

Originally Posted by mark christopher

what make tx s it? some sanwa only run on 6 "aa" cells so a 3 s is too much

It takes 8xAA so a 3S lipo is definately the right one. 2s would be too low as it beeps/complains about <9v