RC Aircraft Rechargeable Batteries



 This web page is all about the Receiver and Servo power Batteries found in Radio Control RC Airplanes. These are not to be confused with the power source batteries in the electric powered models although some electric speed controls and battery eliminator circuit (BEC) allow the use of only one battery to power the model as well as power the receiver and servo's.

 These rc rechargeable battery types must be formed charged when new to get the most capacity and life from them. This means simply the first charge needs to be a over night charge on the wall charger supplied with your rc equipment. Delta Peak chargers are not to be used for this initial form charge.


 Their small size and high rate discharge capacity have made these rc rechargeable batteries the choice of RC Aircraft Fliers for many years.
They are still the main battery supplied with OEM RC Radio Equipment.
They are cheaper to purchase than Nimh or the Lipo,Lion  batteries now available for RC Aircraft use.


 These rechargeable batteries are much smaller and lighter compared to nicads of the same capacity. Allowing much longer periods between charges while using the same size and weight battery in your rc equipment.


Advantages of NIMH over NICAD
* Same weight NiMH will have 1.5 to 3 times the capacity of a Nicad.
* Same capacity NIMH will come in a much smaller lighter package.

Advantages of NICAD over NIMH

*  More tolerant of abusive overcharge.
* Your current quick charger will charge it for sure.

Special considerations for NIMH and NiCad batteries.

  Overnight charge rates must be at Capacity / 10 or less.  So, no more than 72 mah for a 720 AAA pack.  This is true of NiCad batteries as well.  But, a Nicad will tolerate a slightly higher charge rate for a longer period of time without damage.
  A fast charger must be rated to detect the much shallower peak of NiMH.   

Here are the basics for getting the best out of your new battery packs.

 First and foremost!  Never put a new battery on a Peak Predictor / Delta Peak or any other type of Fast Charger without giving it a break-in charge at C/10.  Capacity 10 is the overnight un-terminated safe charge rate for NiCad and NiMH cells.  You can plug it in and forget it.  If you have a 700mah pack of any cell count, the C/10 rate is 70mah.  This rate or less is what you need to break in the pack.  A 1400 mah pack needs a charge rate not over 140 mah for its first charge.  The charge rate can be less than C/10 but should not be over.  Your charge time will be (Capacity X 1.6) / charger output in MAH.  This will give you the time to full in hours for a first charge.

 If you take a new pack and put it on a Delta Peak or Peak detect charger or any other kind of rated fast charger it will not be filled up.  Try as you may, you can't fill up a new battery on one of these chargers.  After it's first C/10 charge, it will work fine.

 Cycling your rc batteries is a must to keep track of the capacity they are able to deliver. As batteries are used and age there usefull capacity decreases. When capacity reduces to 75% of the oringinal out put, replace them.

 Rechargeable rc batteries are one of the most important parts of a flying model. If the battery dies in flight, all control is lost.

Information regarding Battieries used to Power RC Aircraft.

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