new post....who is using A123's for electric flight?

My buddy Roland is using them. He loves them.

Not me personally, but was talking to someone the other day who does.

Basically pretty bombproof: about halfway between lipos ad NiMh weightwise. Just as expensive as LIPOs AFAICT.

Otherwise, just a battery.

Greetings,

I've been using the larger 2200 MAH cells for a few months. I buy 10 cell DeWalt battery packs off ebay for between $100 and $120. They have 10 cells and come apart very nicely. I've made 4 cell, 6 cell, 8 cell and 10 cell packs from them. They work great! They can be discharged at up to 70 amps continuously or over 100 amps for short bursts. They can be recharged from dead to full charge in 20 minutes. That is if you have the proper charger. That takes about 10 amp charge rate. Another neat thing about them is that a deep discharge down to 0 volts doesn't kill them. (Not good for them but they survive. Don't ask me how I know). Also, they won't catch fire and burn if you overcharge them. They have a recharge life of around 1000 charges and almost zero self discharge. They are the coming thing, in my book. They are a little lower in voltage than a lipoly and a little heavier. A 4 cell A123 pack is equivalent to a 3 cell lipoly. The charger for fast charging is not cheap but it's worth it.

Hope that answers your question.

Art

What charger are you using?

Cellpro 10S

"Six_O'Clock_High"

I have been using them since June 06. Running two 4S packs in parallel on some planes or a single 4S on others. I have over 400 cycles on one pair and they are still going strong. Flying 3 days a week year round.

All charging has been on a CellPro 4S or 10S.

All were built from DeWalt packs purchased on e-bay.

I also have a 4S pack made with the 18650 cells from the B&D two cell packs. About 50 cycles on them in a couple of smaller planes with AXI 2208-34 motors.

When it comes down to it I have heard of no one that has worn these cells out yet. Even after leaving the switch on in one plane for over a month the cells came back after charging.