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Old Dec 30, 2012, 11:45 PM
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Lipos "vent with flames"
Li-ion are like firecrackers, they can explode.

So do A123 if abused. They pop pretty violently, but no flames.

So I guess that would make bagged LiFe just about the safest, they might vent, but won't burn up doing it.
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Old Dec 31, 2012, 12:50 AM
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Originally Posted by pmackenzie View Post
Lipos "vent with flames"
Li-ion are like firecrackers, they can explode.

So do A123 if abused. They pop pretty violently, but no flames.

So I guess that would make bagged LiFe just about the safest, they might vent, but won't burn up doing it.
Metallic casing LiFe can explode violently as well. I know first hand. I had the pleasure of testing some cells made by Valence, a sister company to who I worked for, and we were able to get them to explode violently on several occasions. Oxygen isnt liberated with LiFe as it is with other LI chemistries, so fire is rare , but shrapnel from the metallic casing,and whatever secondary casing poses a good danger.

So yes, foil cased LiFe is about the safest. None of the chemistries are really less safe than the others as long as they are used within their limits and for the purpose they are designed for.
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Old Dec 31, 2012, 03:04 AM
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Originally Posted by bkahuna View Post
Sounds like you got your 9xr. Could post a picture of the 12v/ AVR port with the flap open please?
Its hard to get a decent photo, its still dark here but here you go:



It is the normal 6 pin connector, same as comes with HK USBasp.
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Old Dec 31, 2012, 03:20 AM
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I have attached the manual that comes with the 9XR:

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Old Dec 31, 2012, 03:24 AM
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Originally Posted by nebstress View Post
I have attached the manual that comes with the 9XR:

Attachment 5409323

Attachment 5409324
Any luck with getting it turned on yet? The manual says only use the special battery. Is the polarity reversed just because? Or is it correct?
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Old Dec 31, 2012, 03:33 AM
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Originally Posted by nebstress View Post
Its hard to get a decent photo, its still dark here but here you go:


It is the normal 6 pin connector, same as comes with HK USBasp.
What shipping method did you choose?

Both of mine I've ordered - one was SCS Express, other standard postage, haven't arrived yet.

Si.
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Old Dec 31, 2012, 03:34 AM
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Originally Posted by pilotavery View Post
Any luck with getting it turned on yet? The manual says only use the special battery. Is the polarity reversed just because? Or is it correct?
Yes, I'm using a Nano-tech 2500mah 3S Lipo TX Pack, the Battery bay on the 9XR is massive, makes the Lipo look tiny.
One thing is that the balance lead on the Lipo is only just long enough to reach the port of the 9XR.

There is also a large piece of sticky back foam that came in a zippy bag with the 9XR (11cmx6.5cm & 5mm thick)
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Old Dec 31, 2012, 03:36 AM
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Originally Posted by SimonChambers View Post
What shipping method did you choose?

Both of mine I've ordered - one was SCS Express, other standard postage, haven't arrived yet.

Si.
SCS Express but it was delivered to my door by Parcelfarce on Saturday.
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Old Dec 31, 2012, 03:37 AM
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Originally Posted by bkahuna View Post
The 9xr requires a balance plug on the battery to plug into the 9xr, but I'm pretty sure there is no charge port on the 9xr. If that's what you're asking.
There IS a "12V" charge port according to hobby king...

ah, I think it can be seen next to the AVR port in the pic a few posts above this one...
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Old Dec 31, 2012, 03:39 AM
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Ah, just worked out (read the manual) what the foam is for, it goes in the Battery bay to lift the battery & stop it from rattling around.
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Old Dec 31, 2012, 03:41 AM
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Originally Posted by mnemennth View Post
Those "on the battery" protection circuits cost like a quarter apiece in small lots (25 pcs or so); multi-cell ones vary from $0.75 to $1.00. Why not put them in the radio rather than one in every battery?

Oh, right. So they can sell a "special" battery. DOYT!

Like I said before, if it costs like a dollar or two more than their basic Xmitter LiPo, who cares.


mnem
*Juiced*
Well, so it can also be used in non-9XR TX's of course! They obviously care about our safety...
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Old Dec 31, 2012, 03:43 AM
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SCS Express but it was delivered to my door by Parcelfarce on Saturday.
Oh joy, looks like I'll be having a trip to the Parcelfarce depot to pay the customs fee...

At least with Royal Mail their Fee is cheaper.

It still waiting for a customs "random check", so looks like it won't be till Wednesday I receive it at the earliest.

Si.
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Old Dec 31, 2012, 03:43 AM
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I would never buy a radio with a low voltage cuttoff.. prefer to ruin a battery than a model..

Anyway, I think it will be very difficult not to hear this
I do not think not having the circuit will save your model, voltage tends to go down very fast when the battery is nearly empty. Besides, with your voice warning you'd be landing well before that , would you not?
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Old Dec 31, 2012, 03:49 AM
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The default Low Battery Warning was set at '9v'.
My 9XR does appear to have been calibrated already!
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Old Dec 31, 2012, 03:50 AM
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Originally Posted by mnemennth View Post
I was thinking more like this:

Those "on the battery" protection circuits cost like a quarter apiece in small lots (25 pcs or so); multi-cell ones vary from $0.75 to $1.00. Why not put them in the radio rather than one in every battery?

Oh, right. So they can sell a "special" battery. DOYT!
Usually the protection IC manufacturers will only sell it to battery manufacturers and allow bulk purchases when only the complete package has been tested as safe. So the battery protection ICs are surprisingly difficult to get hold of. I've been through all this when I've been producing my own product as I was going to put a separate protection IC on the main board and use separate tag cells. However that would have required more testing to get CE approval, and thus make it more expensive.

Si.
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