ORIGINAL: Mr. Canadian
I have an old futaba attack 4 system that I'm planning on using in my next plane. The problem is the RX and TX battery are dead and won't hold a charge. So i've decided that I will just get 13 of these batteries, [link]http://www.greathobbies.com/products/productinfo.php?prod_id=SAN070N[/link] the question is if I take five of these and solder them together will that give me a 6 volt 700 maH battery or a 6 volt 3500 maH battery.
How old is the radio? Is it narrow band? The last time I looked, the rules on narrow banding in Canada were similar to the US. If it is narrow banded, have you sent it in for service recently? My reason for asking is when I got back in the hobby I had 4 of the old Futaba attack radios. None of them were narrow banded, making them illegal, and most of the batteries were suspect. By the time I figured out the cost of sending them in for narrow banding, checking out the receivers, and replacing the batteries, I determined I was much better off just buying something new. Food for thought...