View Full Version : 9ZH power question
supertrex2
06-17-2006, 01:51 AM
I have a 9ZH Futaba. the first version.
when I charge my battery. after 24 hrs.
My Volt says 10.8
It wont go up to 11 +
And it only last 40 mins till it drop back down to 9.4 Volts.
Is this normal ?? or I have to buy a new battery for this.
I have a 9ZH Futaba. the first version.
when I charge my battery. after 24 hrs.
My Volt says 10.8
It wont go up to 11 +
And it only last 40 mins till it drop back down to 9.4 Volts.
Is this normal ?? or I have to buy a new battery for this.
Mine goes to 11.2v when charged & after several hours use is still above 10v
Perhaps it's time for a fresh pack :wink:
supertrex2
06-17-2006, 05:37 PM
Guess so. do you know any store that sells 9ZH battery?
Guess so. do you know any store that sells 9ZH battery?
Sorry,I'm in the UK & you certainly don't want to get it from here :wink:
flyinfool
06-18-2006, 09:41 PM
You don't want to get a 9Z pack, they are expensive and of low capacity.
There are just a couple of screws and you can open the pack up and replace just the pack inside with a much higher capacity 8 cell pack.
Many years ago I put an 1800mAh, 8 cell, NiMH, Zagi pack in mine.
My stock pack was 800mAh and I think the newest Futaba packs are 1100mAh.
With the Zagi pack in there I was getting 15-20 flights out of a pack.
I think with the newest cells you can get up to 2700mAh in the same size cell (I have not seen this personally but was told about it, do your own checking)
supertrex2
06-18-2006, 10:24 PM
where can I get this 8 cell Nimh Zagi pack?
SteveL
06-19-2006, 09:27 AM
I am sure RadicalRC has them.
flyinfool
06-19-2006, 01:44 PM
Most any battery supplier or hobby shop that caters to planks should have them.
Rotor Trash
06-22-2006, 03:21 PM
This is the battery I use and it works great !!
http://cgi.ebay.com/1-RC-9-6V-2300mAh-Square-NiMH-For-HiTec-Airplane-9-6-V_W0QQitemZ6066451289QQihZ009QQcategoryZ34056QQrdZ 1QQcmdZViewItem
Phaedrus
06-22-2006, 06:48 PM
Go to http://www.hangtimes.com
It is the home of No BS batteries.
Go to the TX pack page:
http://www.hangtimes.com/txpacks.html
Order a 2700 NiMH pack
Drops right in. All you have to do is open your battery case, cut the two wires on the old pack, and drop the new one in and solder the two wires.
2700 pack runs my 9ZWCII for nearly 10 hours.
Also, here's a discharge curve for the 1650 pack that I had in it before I went to the 2700 pack:
http://www.scaleaerobatics.org/downloads/9ztx.pdf
http://www.hangtimes.com/imagelib/sitebuilder/misc/show_image.html?linkedwidth=560&linkpath=http://www.hangtimes.com/sitebuildercontent/sitebuilderpictures/DSCN5760.jpg&target=tlx_pic11j