1. The limit is about 3.1v per cel (normally a cell is 3.6 or 3.7 volt)
1a. you can also use a Lipo monitor, it is a simple device which will light a LED when the voltage becomes under the voltage.
2. Tricky... Li-Ion are rated 3.6v per cell and LiPo 3.7v, you could overcharge them but is unlikely with 0.1v per cell
3. there are LiPo balancers, they work like discharge tray's for NiCad/NiMha packs if you have a balance connector on the pack. It will take away the difference between the cells after some charge cycles and makes the risk of exploding cells less.
4. With NiMha 2C charging is normal rated, with Lipo it is normally 1C but some experiments with quality chargers show 1.5C is working fine.
__________________
Speed is just a fiction
|