I want to change to a rechargeable Rx pack on my nitro truck and I would like to reuse a pack I have from a crashed electric plane.


The pack has 6 AAA Ni-MH cells for a total of 7.2 volts. Is the 7.2 volts too much since the "normal" pack is 4 cells at 6 Volts?

If this will work any clues as to how long a charge will last if the pack is rated at 650 mAh?

Any recommendations on a good but inexpensive peak charger for Ni-MH?


Thanks
Huett

use 5 of those cells. unwrap it an take thelast of the cells out of the sequence. take the lead from that cell and solder it back on to the now last cell. wrap it back up and put a sticker on it. This will give you a 6v reciever pack. (5x1.2v=6v) you can charge it with anything that puts out about 7.5 to 8v. at no more then 1amp. and at 650mah youll be able to run it for a good amount of time before a recharge is needed.

yes 7.2 volts is just fine. most servos are actually rated at 7.2. make sure your reciever can handle it though. 650mah is not very long. should last about 2 or 3 runs.

wrong!! you will fry your reciver if you use that pack. If the pack is rated at 7.2 volts that means it putting out about 8.2 to 8v which will burn your reciver up. the reason your saying that most reciver are rated at 7.2 is because a 6v pack puts out that kinf of voltage

Whether or not it will burn it up..... it is a definite possibility. Do like flyingjibus said earlier and remove a cell. The 5 cells absolutely give you what you need. The voltage will be = to the standard 4 alkalines. I have seen servos with higher ratings than norm but the RX would have to be specifically designed for such and would come with accompanying information...

XTM carrys a 5 cell reciever pack. That wont burn up your reciever will it? im getting one for my X-C. ALso it has 1450 mah. How many runs will that give me on one charge? Will the mrc 959 work with this type of battery?

5 rechargable cells = 6VDC = 4 Alkaline cells = 6VDC

O ok but wont the 5 cell pack give me more power? and what about run time? Im used to using 4 alkaline lol

Look, I don't understand exactly where the confusion is coming from..... FlyingJ was telling a guy not to use 6 cells.... and to re-iterate what was said after:

YOU want 6VDC for your RX
RIGHT NOW you get 6VDC from 4 Alkaline batteries (4 x 1.5v = 6vdc)
You want to CONTINUE TO GET 6VDC to your RX and rechargables are 1.2VDC each so you need 5 (5 x 1.2 = 6vdc)
So again, 5 rechargables cells yield the same as 4 alkalines, and YES, this is what you want......

LMAO............. ok thats all i needed to know. I will get the 5cell reciever pack

They are nice to have. Set up your wiring so that it can be charged in the truck. They last soooo much longer than the alkalines....

Charged in the truck? how do you do that?