mike early

Sounds like a good idea on paper.....

What do you boys think about eneloop Rx packs? either 4 or 5 cell varieties?
Charging them in series would cause any problems?
Can they handle the voltage drop of a standard digital servo without a brown-out on a spectrum receiver?

Andrew

Mike

Here is a [link=http://www.stefanv.com/electronics/sanyo_eneloop.html]nice review[/link] by Stefan Vorkoetter. Although he is probably best known for his MotoCalc program, he has a wide range of interest in electronics and aviation. One thing that I did notice reading the review is that a 4 cell eneloop pack averaged around 4.7v under discharge load which was slightly above a standard 4 cell NiMH pack.

Charging using a typical charger set for NiMH should be satisfactory.

andrew

4*60

My Feedback: (41)

Probably fine but check for A123 1100mah packs. 6.6 volts and voltage drop will be small. Need a LIFE charger though.

mike early

"With R/C model power batteries, the cells in those batteries have a very low internal resistance (typically about 0.004Ω per cell)....

With the approximately 0.1Ω resistance of the Eneloops....."

I believe this is the problem. My voltwatch pegs the red light with any movement of my servos. I will continue to cycle them a few times.....

mike early

I have the charger but I hate not knowing how much charge is left in my various planes' batteries. I suppose eventually, I will go this route....

Capt Lou

Mike:

If you havn't gone to this site www.hangtimes.com you should look at it. It has good info on A123 technology and batteries. This is NoBs batteries and I have met the guy at the WRAM show. He speializes in these batteries, is knowledgable about these batteries, and sells a quality product. The bottom line is that even if you can't get a reading on when the voltage is drops in A123's, you should be able to calculate the pack's capacity within a reasonable average of its discharge rate. I am not familiar with eneloop batteries but I have been using multiple A123 packs in several 50cc giant scales and think that it is great technology.

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