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Battery questions

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j45on:
The camera and transmitter both run from 3.3 volts so probably not very long then

http://www.rangevideo.com/index.php?main_page=product_info&products_id=217

http://www.rangevideo.com/index.php?main_page=product_info&cPath=6&products_id=212

Bluechip:
Hi Jason

Like everything in electronics .. they will have a max / min operating voltage.
 
Looked at one of the links, suggest you enquire what the drop-out voltage is ..

( One does say 3.3 to 6V ?? )

It may well be that they will still work, except they are not GUARANTEED to work at a somewhat lower voltage.

Not much is going to happen if the volts drop below spec.

Hardly likely to run amok and devour the world is it?  

Just have to put the battery on charge when the kit acts the goat ..


Dunno how much, if any, you're into electronics. But 3.3V is a standard regulator. Not difficult to lash up a PSU from a 6V 2Ah (or larger ) SLA battery.

http://www.rapidonline.com/Electronic-Components/Integrated-Circuits/Voltage-Regulators-LDO/800mA-Low-drop-out-voltage-regulators-LD1117/34991

Some PICs run from 3.3 V. they're still OK @ 2.7V  IIRC ( not confirmed, just seem to think it's correct .. )

BC

andyf:
I'd be tempted to build a superstructure which would take 3 x 1.2v AA NiMH rechargeables to give 3.6v. You can get 2700mAH (allegedly) versions of those from places like Technobots. I seem to recall (but may be wrong) that NiMH cells hold their voltage until they are nearly exhausted, whereupon the voltage takes a sudden dive.

Andy

Bluechip:
Hi Andy

That would be another way  :thumbup:

 :offtopic:

Although I don't have much love for NiMH batteries .... :(

My super duper Bosch 12V drill died after 2 yrs .. battery packs plastic welded but yielded to some butchery

10 batts in each pack, 3 shot in one, 2 in the other ... drill kit with drill, 2 batts, charger, case was £70.

ONE !!! new batt. £53 ??? WTF ???

Crappy (?)  Nu-Tool ( £9.99 )  with one 18V NiCad pack is STILL alive and kicking some 4 years after the demise of the BOSCH ..

End  :offtopic:

BC



 

j45on:
Andy I have some 2700 mah AA,s I will give them a go if the lipo is no good
I have seen AA,s up to 3800mah on ebay
Or go with bluechips suggestion and run a 3.3V  regulator from one of the other batteries
The trouble is I am really short of space in this tiny chassis If I had the money

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