alfredbmor

Hi:
I have this radio (JR 8103 DT Heli version) and I want to know if I can charge my radio batteries with a fast charger using the normal charge receptacle (The one installed on the side of the radio). I plan to charge my batteries up to 2C.
Thanks.

tadawson

Stock battery, or ? ? ?

- Tim

Rafael23cc

My Feedback: (6)

If I remember correctly, the stock battery is a 600 mAh battery. Charge at 2C would pump 1200 mAh thru the system. If I remember correctly, the fuse in the TX is a 1.3A (1300 mAh) fuse. I think that would be too much for the fuse.

Take the battery out and charge.

But, Why do you need to charge at 2C?

Rafael

alfredbmor

Sometimes I can't put on charge my radio the day before going to the field and I got this new Hyperion charger which have many features and that allows me to charge the batteries at the field. I have soldered a servo connection to the battery to be able to charge taking it apart from the TX but I also wanted to know if I can charge the battery with out the task of pulling out the battery. I do not want to mess with the battery board connector or damage the connector.
Jim yes is the stock battery.
Rafael: I think that is the fastest and safer way to charge (2C), do you know how much time can take to charge it at 1C?, maybe I can charge it at 1C over the stock receptacle with out blowing the fuse.
What do you think?

Thanks.

Mac_Man_UK

The fuse is rated at 3A, however.... I regularly charged my packs at a 1A rate without any issues.

alfredbmor

Thanks Mac Man, How long does it take?

Mac_Man_UK

Depends on battery pack size, how much you have taken out etc..... As I use transmitters for test purposes as soon as the alarm goes, I usually whack it on the fast charger and wait till that alarms at me telling me that it has finished. A 600mAH stock NiCad will usually be ready after about 35 - 40 minutes.

Rafael23cc

My Feedback: (6)

Charge at 1C will take 1 hour, as that is the definition of C (Capacity) Your battery is rated for 600 mAh. mAh = miliAmpere- hour, which means that it will deliver 0.6 ampere for one hour (theoretically). So if you charge it at 1C, 1 times the capacity, a fully discharged battery will be charged in 1 hour. At 2C, the battery should be charged in 1/2 hour.

Remember that charging NiCds at anything over 1/10 C is going to reduce your battery life, unless the batteries are rated for fast charge, and even then battery cycles are reduced.

Rafael

alfredbmor

Thanks, it seems to me that it is a fair time to wait and safe for my radio. I will be soldering the plug taking take of the polarity and labeling for a JR purpose.
Thanks again guys.