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Sorry, but you are wrong.penoy_balut said:battery needs periodic full discharge and charge because any part of the cell/plate without activity results to sulfation.
VictorPS said:Why for new Li-ion battery, for first charging will advice to charge at least 8 hours to achieve 100% capacity?
Later on, just 4 hour is enough for full charge?
What happend if fail to do so? And why?
Thank you,
This is what I know too, but if you read user manual of your handphone, or eletronics devices that use battery power, you will notice the manufacturer is suggest double charging time for first use.epilot said:I have heard it for Nicad and Nimh cells.
Li-Ion and Li-Polymers use special chargers which controls both the charging voltge and current for the battery, The max charge rate recommended is 1C . because the voltage of the charger must be the same with the nominal voltage of the battery so if you charge your battery at 1C then it would be charged in 2 hours Max and if you charge your battery at 0.2C then 10 hours is need for the battery to be charged...
audioguru said:Sorry, but you are wrong.
This is a lithium-ion battery. You are talking about a lead-acid battery. They are completely different.
Both are destroyed if they are completely discharged. A lead-acid battery has lead plates that get sulfated from the sulfuric acid if it is discharged for a long time. It should be kept charged.
VictorPS said:Why for new Li-ion battery, for first charging will advice to charge at least 8 hours to achieve 100% capacity?
Later on, just 4 hour is enough for full charge?
What happend if fail to do so? And why?
Thank you,
A full discharge is to a very low voltage, usually 0V. Then a Li-Ion battery will be ruined. A voltage that is still enough to operate the device is usually fine, since the device is probably smart enough to shut-off before the battery is ruined.penoy_balut said:.... my new one which i use up to full discharge (low enough to operate the device) before recharging.
Usualy isn't OK to top-up a batery (discharge it before to at least .4XC). This problem apears because the cristals inside the bat grow biger and that lowers the active surface. This situation is a PIA esp for NiCd but afects LiIon&LiPol.penoy_balut said:i don't know if others experienced the same, i have a Li-ion battery that i keep on charging even if its just 10 or 20% discharged, it did not last a year while my new one which i use up to full discharge (low enough to operate the device) before recharging works up to this time at approximately two and a half year.