Tx replacement batteries...

Martin
You can charge a "Lithium" battery from any state of charge as long as it is above the 3V/cell minimum.
They do not suffer from any "memory" characteristics. The only thing they do not like is being left at a full charge for a long time (many weeks) as some of the chemicals within start to deteriorate. You simply bring forward what will happen naturally with extended use.
In a Tx application the load is so small you will hardly notice any fall in battery performance.

The 2 year old 3s LiPo in my Futaba runs it for months at a time. It has likely lost a bit of capacity by now so it only lasts for 2 months of flying instead of 3!

Thanks, Simon. I was a bit worried about my 3S 2200 so I started using it in my starter and running some engines on the test plank. My 700MaH 3Ss were intended to be used in my FT Pietenpol, but I could never get a flight at the club, hence doing the Playing Fields on Wednesday. With luck there'll be nobody over there and I can use the 2 700s having a good session with tarmac so I can practice take-offs.

Cheers. It's dark now, so I'll have a go at the LiFe thing if the new connectors turn up, then I can have a bash at charging it.

Thanks again.
Martin

Well, I got a Jiffy bag of connectors today...way too small. I didn't realise they came in different sizes and no idea who I bought them from and it would likely cost more to send them back, so I found a female JST connector with a Deans on the other end, which I'm assuming would be for charging, so ordered that. It transpires I needed an XH connector with a 2.5mm pin pitch! Wouldn't it be nice if they put that in their adverts or put a coin for scale or some such? God I HATE lecktrickery!

There's a lot to be said for diesel free flight!

Martin

How do you tell which is a female and which a male JST? Both have their "bits" shrouded. The thing that LOOKS like a female in the ebay advert has pins inside it, but the thing I'm assuming is a male has tubes in it! I just want something that plugs onto the damned battery pack and then into my charger.

Martin

Specialbuilder wrote:
There's a lot to be said for diesel free flight!

Martin

My thoughts exactly Martin...until the d/t fails of course

Used to use Jetex fuse, didn't they? But that ain't made no more, so Gawd knows what they use these days. I could never trim an F/F model. Never found long enough grass!

Martin

Specialbuilder
Matching electrical connectors is always an issue, until you know, but to be fair it is not all 'sweetness and light' with diesels.
The thread of the compression screw on the various types of Mills 75 for example?

Male and female of the 'red' JST?
It depends who you are talking to but officially, according to the IEEE, it is the pins not the body that determine the male gender.

I have been using fuse, it's a cotton wick soaked in salt Peter, otherwise known as a slow match.

Simon, I can't afford a Mills!! I have P.A.W. and E.D., but can't justify the fuel costs!

Paul, is that what they use on a matchlock pistol these days?

All very interesting chaps, but not answering my male/female JST connector problem.

Martin

Does this help?

female is the one with the visible metal bits.

I'm hoping I have now ordered the right thing. 2.5mm pin pitch, 2 pin type XH. 5 pairs. I just hope that's what's in the Tx. The guy who did the conversion is not speaking to me as I dared to correct him in one of his pronouncements. Gobsh**e is what we all called him, but only I to his face. No longer in that club any more<GGG>.
Thanks for your help gents. Fingers crossed I've ordered right this time. Anyone want some tiddler connectors, send me a stamp and they're yours. I'm sure I'll never use em.
Martin

Well, I found a lead that uses the servo type plug and today with a visit from a chum with a Klevafone, he took a picture of your post, Simon, for which many thanks and out we went to the Workmate and he talked me through it using the phone picture and Presto! it's fizzing away out back for a couple of hours, so I can then try to understand how to bind it to my Lemon Rx in the FT Scout I've just built and even worse, understand how to put it on the DX7's computer.
I can quite understand how Spektrum have just introduced the DXS with no screen at all! Is that a back-to-basics effort, I wonder, for those who miss the Skyleaders and Challengers of yore?

female is the one with the visible metal bits.
I'd have called that the male! (cos it's got the bits that poke in, not the ones that get poked into!!!) :evil: [badass]

Eric,
if you look at the photo above, I found a lead with the lower fitting on it and a Deans on tother end. I already had a Deans to barrel plugs lead which came with the charger, so i was able to plug in the charger, then go deans to Deans which had the thing above on tother end and then that to the servo plug on the LiFe battery pack. Complicated, but, with Simon's excellent instructions, my chum's Klevafone and my dexterity with the charger (HA!) we seem to have got there. Whilst I still wouldn't dream of spending 40 quid a month on a 'phone, I'm glad chum did!

Thanks to everyone concerned.

BTW, for a model boater like me, it's very difficult talking about Deans connectors as there's a very well known company called Deans Marine. I could never understand why they'd got into electrical stuff<G>

Martin

I ended up not using the little white JSTs (which I've already lost anyway!)
Martin