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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> what type of charger will charge these batteries
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what type of charger will charge these batteries - 7/25/2002 6:24:58 AM   
santi



Posts: 197
Joined: 5/8/2002
From: modesto, CA, USA
Status: offline 		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
       Post #: 1

what type of charger will charge these batteries - 7/25/2002 7:20:38 AM   
greenboot



Posts: 1173
Joined: 1/16/2002
From: St Louis, MO, USA
Status: offline 		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

(in reply to santi)
       Post #: 2

what type of charger will charge these batteries - 7/26/2002 4:03:30 AM   
blvdbuzzard



Posts: 1437
Joined: 6/16/2002
From: boulevard, CA, USA
Status: online 		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.

(in reply to santi)
       Post #: 3

what type of charger will charge these batteries - 7/26/2002 4:31:13 AM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		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.

_____________________________

Aircraft Proving Grounds
http://www.rcaircraft.net/
Information on the building and flying of Radio Control Aircraft.
Site for hobbyist in the R.C. Aircraft modeling world.

(in reply to santi)
       Post #: 4

what type of charger will charge these batteries - 7/27/2002 9:32:05 PM   
santi



Posts: 197
Joined: 5/8/2002
From: modesto, CA, USA
Status: offline 		Geistware

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

(in reply to santi)
       Post #: 5

what type of charger will charge these batteries - 7/27/2002 10:36:46 PM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		This should be the direct link
https://www.fmadirect.com/site/Detail.htm?item=1137§ion=3

_____________________________

Aircraft Proving Grounds
http://www.rcaircraft.net/
Information on the building and flying of Radio Control Aircraft.
Site for hobbyist in the R.C. Aircraft modeling world.

(in reply to santi)
       Post #: 6

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