santi

My Feedback: (32)

I recently bought some expert electronic batteries the 4.8V PRO1500 4 Cell for the electronic ignition and the 6V PRO2700
5 Cell for the receiver. They are Nickle Metal Hydride batteries. I don't have a lot of knowledge on batteries and chargers and I hope that some of you will educate me a little bit.

My questions are:

*What kind of charger will i need to charge these two?
*I plan on flying this plane for like 5-6 flights. Will it be enough mah for that many flights?
*Will i need a field charger?
*How long will i need to charge it for?
*and so on and so on.........

Don't know if thats all i need to know any type of help would be appreciated.

Thanks,
Santi

greenboot

My Feedback: (1)

The best way to determine how many flights you can safely get is by measuring the voltage at the beginning and end of each flight. Do this a couple of times until you get a "feel" for how much capacity you actually use for each flight. I can't tell you how much it will be since it depends on the type of plane and the length of each flight.

You should also construct a chart of battery voltage over time while you discharge the battery with a known load. Note what voltage the plateau occurs at. Also note the voltage where the batteries drop off rapidly. Don't start a flight unless you have enough capacity plus a generous reserve.

If this sounds like a lot of work, just use a field charger after 3 flights to peak them. That's what I usually do. It gives me a chance to BS a little bit.

Tom

blvdbuzzard

I have been using the Dymond micro peak charger. It works really good for a charger that cost less then $30.00. It will do both nicad and NIMH cells. It will do packs up to 8 cells. Three amp setting so you can charge at the rate the packs need.


http://www.rc-dymond.com/order_chargers.htm

Dru.

Geistware

My Feedback: (16)

I would recommend the Einstein XL from FMA Direct. It is a great charger! I will admit that the 2700maH pack is larger than it is capable of charging in one shot, but unless you run it completely down, it is great. I have packs larger than the rated specifications and I don't have any problems with the system.

santi

My Feedback: (32)

Geistware

do you have a website for the Einstein XL from FMA Direct?
I will check it out thanks......
Santi

Geistware

My Feedback: (16)

This should be the direct link
https://www.fmadirect.com/site/Detai...1137&section=3