Hi Didier,


The predominate cells being used by the Lithium Ion pack manufacturers are 3.7VDC, in fact I don't know of any manufactures using the older 3.6VDC cells. I am not saying they are not out there, but you would have to put the pack together yourself. The statement that a Lithium Ion cell is a 3.6 and a Lithium Poly is a 3.7 is incorrect.

As far as charging is concerned, charging a 3.6VDC battery on a 3.7VDC or (7.2/7.4) will not result in a incident requiring a Hazmat response, Unless there is something drastically wrong with the cells. If there is a problem with the cells charging on a prescribed charge setting can cause the exact same problem. Charging a 3.6 on a 3.7 setting will result in a slightly overcharged cell. In the long run this will degrade the cells cycle life, (read the amount of charges that a cell will take before it starts to wear out).

Fromeco is in no way promoting that any one go out an buy 3.6VDC packs and charge them on a 3.7VDC charger. If you do this you will not get the full cycle life out of your batteries. Lithium Ion and Lithium Polymer cells weather they be 3.6 or 3.7 will have the longest service life if they are slightly undercharged and NOT over drained, to use simple terms.


Kurt Cook
Fromeco Scale Avionics LLC
www.fromeco.org
[email protected]