cactusface
Senior Member
Hi All,
Not been here for sometime! Most of my project seem to be things? that move, etc. I have for years always used rechargeable cells usually in the form of AA's. I have some old Nicads on their last leg and some new NimH! I think 2700mA being the highest I have.
But I have been taken by the Lithium 18650 cell a bit longer and fatter (but lighter?) then an AA at 65mmx18 but 3.7v and 3600mA is tempting, the other thing I notice is some are protected (by a small PCB, in the base) for over changing/discharging, over voltage, etc) and some are not...
It would be good to hear from someone who uses or has used these cells, the protected are more expensive as you would imagine, could you recharge the un-protected one's then with a good bench PSU with constant voltage and current limit?? it seems you must never use more then 4.2volts for the single celled 3.7v ones.
There again I could be wrong
Regards
Mel.
PS. Yes I know Lith-ion and Lith-poly are not quite the same!
Not been here for sometime! Most of my project seem to be things? that move, etc. I have for years always used rechargeable cells usually in the form of AA's. I have some old Nicads on their last leg and some new NimH! I think 2700mA being the highest I have.
But I have been taken by the Lithium 18650 cell a bit longer and fatter (but lighter?) then an AA at 65mmx18 but 3.7v and 3600mA is tempting, the other thing I notice is some are protected (by a small PCB, in the base) for over changing/discharging, over voltage, etc) and some are not...
It would be good to hear from someone who uses or has used these cells, the protected are more expensive as you would imagine, could you recharge the un-protected one's then with a good bench PSU with constant voltage and current limit?? it seems you must never use more then 4.2volts for the single celled 3.7v ones.
There again I could be wrong
Regards
Mel.
PS. Yes I know Lith-ion and Lith-poly are not quite the same!