what battery should i get?  
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what battery should i get? - 6/3/2003 4:52:14 AM   
skylark_man



Posts: 61
Joined: 1/30/2003
From: brainerd, MN, USA
Status: offline 		for my skylark helicopter i need a new battery because the one i have isnt giveing out the needed power. the battery is a 8.4 v 750 mah 7 cell battery and i want something with more power.

do you know what kind of battery i should get and if i need a new charger to charge it, the charger i have came with the skylark and doesnt have the abilitie to charge in different frequencys.

please tell me what battery to buy if you know of one!!!!!

skylark_man
       Post #: 1

what battery should i get? - 6/3/2003 7:49:43 AM   
ZIZI



Posts: 126
Joined: 2/27/2003
From: Trzin, SLOVENIA
Status: offline 		well since your running a nimh pack...8 cell is the prefered 8 cell pack...although nicds are usually 7 cell (have less resistance and more punch) I would just get a nice 8 cell powerex pack if you wanna use that charger...but if you want ultimate power then a nice 2 cell kokam lithium pack is the way to go...but its pretty expenssive with the charger

(in reply to skylark_man)
       Post #: 2

what battery should i get? - 6/3/2003 11:45:26 AM   
Dodgey99


 

Posts: 222
Joined: 4/30/2003
From: london, IL, UNITED KINGDOM
Status: offline 		and one more thing. The charger you have, if it is the same as the one that comes with the hummingbird, has no peak setection, so rapidly damages batteries

(in reply to skylark_man)
       Post #: 3

what battery should i get? - 6/5/2003 3:25:11 AM   
skylark_man



Posts: 61
Joined: 1/30/2003
From: brainerd, MN, USA
Status: offline 		hay if i did get the 8 cell nihm, how long would i have to charge it with my charger.

(in reply to skylark_man)
       Post #: 4

what battery should i get? - 6/5/2003 6:59:56 AM   
staggerwing10



Posts: 114
Joined: 10/30/2002
From: washington, DC, USA
Status: offline 		im not sure but trickle chargers of any sort are not good for batteries in the long run. i just purched li poly cells for my fun picollo. i found a cheap place that sells e tec and kokam packs and chargers at very reasonable prices. [URL]http://www.lightflightrc.com[/URL] . they also sell ac adapters for thier dddc chargers at just above retail. they also have wonderful tech support. i would wholeheatedly recommend them.
cheers

_____________________________

Just imagine the uses for a [flying!] handheld iguana maker

(in reply to skylark_man)
       Post #: 5

what battery should i get? - 6/5/2003 2:36:34 PM   
Dodgey99


 

Posts: 222
Joined: 4/30/2003
From: london, IL, UNITED KINGDOM
Status: offline 		How long to charge...

It works like this... It depends on the Mah rating of the entire pack and the Mah (Milli-Amp Hour) rating of your charger.

If your pack is 600Mah and your charger is rated at 600Mha then it should take one hour (well, about 40 mintes, as packs never fully deplete). This is known as charging at 1C (1 x cell capacity) - a standard charge.

So, a 600Mah charger will take 2 hours (well, about 1 and 1/2 hours really, same reason) to charge a 1200Mah battery pack.

If you plug your 600Mah charger into a 300Mah pack then it shoudl take half the time (a bit less than half an hour). In this case you are charging your battery at 2C (we are now fast charging).

You could charge a 600Mah pack at 60Mah, this is known as a trickle charge, or C/10. This is good for topping up the individual cells in a pack to their maximum without overheating the pack.

(in reply to skylark_man)
       Post #: 6

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