Hi all,
I got myself an old (but "new: never flown) Stratos F3B. It came with all servos, receiver and battery. The battery consists of four Sanyo KR-1400AE 1400mAh, yellow colour with red letters.
To be sure, I soldered new wires on the battery and cycled it 5 times on my Robbe Infinity 2; these are the results:
Cycle 1: Discharge: 1178 Charge: 1338 Cycle 2: Discharge: 1505 Charge: 1359 Cycle 3: Discharge: 1512 Charge: 1368 Cycle 4: Discharge: 1515 Charge: 1387 Cycle 5: Discharge: 1520 Charge: 1385
Can I consider it safe to use this battery ? The seller had no idea how old it was. I realize the safe way is to get rid of it, but could I risk using it in a "lesser" model (like e.g. an old glow-engine trainer) ?
Thanks, Stefan.
Stefan,
What discharge rate are you using? If it is at least 500mah, these cells are ok. Like Jon said, if it give you about 80% of the rated cap., it is ok. If you charge them and let them sit for a day or two, and still get 90-100% of the rated cap. when you discharge them at 1C, they are good cells. But if in doubt, get new ones. Batteries are cheap, compares to the plane cost.
Brian
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